Everyone who has electrical devices needs a power bank or phone charger. Mobile phones, headphones, tablets, smart watches, and even notebooks can be charged from such power sources. Moreover, a power station is not bad for those who wander in nature. We have quite a lot of experience in testing such devices, we've been using them for almost 10 years, and now we're sharing our experiences with you. We also sort out the countless fast charging standards, but we also line up for wireless charging and magnetic power banks. Let's get into it!
contents
- These are the best power banks (2025)
- These are the best phone chargers (2025)
- Everything you need to know about power banks and phone chargers
- On what basis should you choose a power bank?
- Advantages and disadvantages of power banks and phone chargers
- Frequently Asked Questions
Power banks can be divided into several categories, since it doesn't matter if you need them in portable clothes, next to your phone, or if you want to supply a tent camp with electricity, since for the latter you will need a power station. Then there are the chargers, which do not have a battery, but do roughly the same thing as the power banks: devices are charged from a mains power source. We have tried to put together our list in a variety of ways to cover your needs as much as possible, and we have included all kinds of tools accordingly.
However, we left out the power stations, because we consider that their prices are so high that very few people are worth buying them for the time being, but those who are interested in them are you can read our tests here. Should this situation change, we will update the list with these products as well.
These are the best power banks (2025)
We selected the power banks on our list based on the following criteria:
- more than 10 years, based on our own experience as testers
- we all own several models and use them on a daily basis
- based on the service experience and long-term tests of our previous partners
- based on individual research, which is based on domestic and international customer opinions
- based on opinions read in various forums and special groups
Who we recommend it to
The Swissten Power Line combines the manufacturer's simpler power banks. One of their big advantages is that they offer a relatively large capacity very cheaply, and they are also available here, so you can get them in no time, we managed to do it in 2 days by courier. We recommend it to those who don't need a lot of extras and want to get access to a large-sized plant very quickly.
Why is it out of stock?
The 20 mAh version of the Swissten Power Line power bank is a real price/value champion, we can mention only one flaw: it does not charge notebooks that can be charged with a higher power and are waiting for 000 V, but apart from that, we cannot connect it. 20 Ah is already a significant capacity, for example most notebooks and tablets have smaller batteries. It supports QC and PD standards, although only up to 20 W, so don't expect very fast charging. A 20-member LED row is responsible for displaying the charge, and 4 devices can be charged from it at the same time.
Specification
- Technológia: Li-Po
- Capacity (mAh): 10 000 mAh
- Capacity (Wh): 37 Wh
- Performance: 22,5 W
- Protocols: QC, PD
- Number of ports: 3 db
- Outputs: 2 Type-C, 1 USB-A
- Inputs: 1 Type-C
- Charging display: 4 point LED
- Crowd: N/A
- Sizes: 105x65x27 mm
- Charging time: N/A
- Extras: built-in cable
Who we recommend it to
The Xiaomi Power Bank Pocket version is the basic portable battery of the well-known company, with 10 mAh. The point here is not the many extras, but the small size and super quality, and the built-in cable, so you never have to take one with you. We recommend it to those who are looking for a Xiaomi product that is not too large capacity, pocketable and has a built-in cable.
Why is it out of stock?
The Xiaomi Power Bank Pocket version is a power bank specifically available in Czech, sand and blue colors, actually the basic product in the Xiaomi universe. It has an integrated cable, which can easily deliver 22,5 W power, and can even charge up to 3 low-power devices at the same time. The site says "on the Aircraft", which means it can be taken onto an aircraft, but of course you could have already guessed that from its capacity.
Specification
- Technológia: Li-Po
- Capacity (mAh): 30 000 mAh
- Capacity (Wh): 111 Wh
- Performance: 100 W
- Protocols: QC, PD
- Number of ports: 3 db
- Outputs: 2 Type-C, 1 USB-A
- Inputs: 1 Type-C
- Charging display: display
- Crowd: 578 grams
- Sizes: 110,3x72x52 mm
- Charging time: N/A
- Extras: RGB LED lighting
Who we recommend it to
Awei is a relatively well-known brand that excels not only in the production of power banks, in fact, I think their earphones are better known as well. The Awei P15K is an all-in-one solution that functions not only as a portable battery, but also as a flashlight and RGB LED. We recommend it to those who want extra functions in addition to brutal performance and high capacity.
Why is it out of stock?
The Awei P15K is not kidding, it can deliver 100 W through both Type-C ports, but this is also the maximum power that can be delivered. It can charge three devices at the same time, and this kraft is easily enough to keep a serious laptop alive, because 30 mAh is not enough, it charges an average notebook roughly twice. As an extra, integrated with the battery, you get a flashlight, a fancy RGB LED and a carrying handle, since it is not a light piece, this makes it easier to carry around.
Specification
- Technológia: Li-Po
- Capacity (mAh): 20 000 mAh
- Capacity (Wh): 74 Wh
- Performance: 100 W
- Protocols: QC, PD
- Number of ports: 3 db
- Outputs: 2 Type-C (60 and 100 W), 1 USB-A
- Inputs: 1 Type-C
- Charging display: display
- Crowd: 400 grams
- Sizes: 154x55x40 mm
- Charging time: 2 hours
- Extras: color display with parameter display
Who we recommend it to
QOOVI's 20 mAh version is the company's best model, as it can deliver 000 W, just like the Awei P100K, but without its extra functions. Not everyone likes such unnecessary stuff, but in return you get a pretty good display that shows not only the charge, but also the voltage, current and output. We recommend it to those who, in addition to brutal performance and high capacity, also like to monitor individual values separately.
Why is it out of stock?
QOOVI is a power bank manufacturer that has launched countless devices, including the one shown above. Its performance is the same as the Awei P15K, that is, it can deliver 100 W on its Type-C port, at least on one, while 60 W comes out on the other. Its display is very rough, on the one hand, it is colorful, which is rare at this price level, and it also shows everything it can. On top of that, it is surprisingly small and can be charged in 2 hours. They also have a 30 mAh model, although it only pushes out 000 W.
Specification
- Technológia: Li-Po
- Capacity (mAh): 60 000 mAh
- Capacity (Wh): 222 Wh
- Performance: 22,5 W
- Protocols: SCP QC, PD
- Number of ports: 6 db
- Outputs: 2 Type-C, 4 USB-A
- Inputs: 1 Type-C
- Charging display: display
- Crowd: 1200 grams
- Sizes: 145x75x70 mm
- Charging time: 12 hours
- Extras: funny design, dual LED lamp
Who we recommend it to
QOOVI's 60 mAh power bank is not a small piece, in fact, it is huge. This much energy has to fit somewhere, and for this they chose a very creative shape imitating a shipping container with an orange carrying handle. It comes with a power button and a built-in LED light for free, which will slowly become as iconic an element of Chinese stuff as the sacred quartz of Japanese cars. We recommend it to those who want a huge capacity and the point is not raw power, but keeping the devices alive for a very long time.
Why is it out of stock?
One of the weaknesses of QOOVI's 60 mAh power bank is that it can only deliver a power of 000 W, which means that it takes a while to drain it. However, it can charge countless devices at the same time, since it has a lot of ports, which can be used to connect a lot of low-power stuff. Compared to that, it's not even expensive, so if capacity is the most important aspect, take this home.
Specification
- Technológia: Li-Po
- Capacity (mAh): 4900 mAh
- Capacity (Wh): 18 Wh
- Performance: 20 W
- Protocols: QC, PD, AFC, FCP, SCP, DCP, etc.
- Number of ports: 2 db
- Outputs: 2 Type-C
- Inputs: 1 Type-C
- Charging display: 4 point LED
- Crowd: 100 grams
- Sizes: 80x40x26 mm
- Charging time: N/A
- Extras: extremely small, fits in a pocket
Who we recommend it to
The Baseus PPWCO5T is nothing more than an emergency power bank that does not require a cable. A Type-C port has been soldered onto it, so it can be plugged directly into devices equipped with such a port, such as phone cases. Since it is very small and can easily be put in your pocket, it really serves to replenish your energy when you run out. We recommend it to those who don't want to carry a bulky item with them, but need a life belt containing energy.
Why is it out of stock?
The funny thing about the Baseus PPWCO5T power bank is that it weighs only 100 grams and is barely 80x40x26 mm, which is not much bigger than a TWS earphone. You can't forget the cable at home, because the port is soldered onto it, so there is a female connector on one side and a male connector on the other side. Its use is twofold: on the one hand, you can charge Type-Cs devices with 20 W power without a cable, and you can also put a cable on the other port if you want to power other devices.
Specification
- Technológia: Li-Po
- Capacity (mAh): 10 000 mAh
- Capacity (Wh): 37 Wh
- Performance: 20W, 15W wireless charging
- Protocols: QC, PD, Qi
- Number of ports: 1 db
- Outputs: 1 Type-C, wireless charging
- Inputs: 1 Type-C
- Charging display: 5 point LED
- Crowd: 248 grams
- Sizes: 104x70x15 mm
- Charging time: 3 hours
- Extras: magnetic fixation, wireless charging
Who we recommend it to
There are all kinds of phones in the editorial office, and although we are anointed advocates of Chinese products, there are those who use Apple phones. Since iPhones have been able to charge wirelessly since the 8th, and since the 12th have also had MagSafe, you can find a MagSafe power bank in the company's range, but not as much as the HINOVO MB1-10000 costs. We recommend it to those who use an Apple phone, but don't want to pay for the ridiculously grossly overpriced factory power bank, but want a similar solution at a quarter of the price.
Why is it out of stock?
I don't want to over-explain the matter in the case of the HINOVO MB1-10000, since it is a discounted MagSafe power bank, and we have a test for it. It's great quality and pretty much the same as Apple's product, but let's face it, the focus here is on wireless charging and magnetic connectivity. And the device does this very well, so anyone who doesn't print money at home should check it out.

Source: Aliexpress
Zime Pro 140 W power bank - One of the most brutal fast chargers on the market, next to power plants
Advantages of the power bank:
- 25 mAh capacity
- Charging 3 devices simultaneously
- 140 W Type-C fast charging
- very cheap compared to his knowledge
- a great display embedded in the design
Specification
- Technológia: Li-Po
- Capacity (mAh): 25 000 mAh
- Capacity (Wh): 92,5 Wh
- Performance: 140W, 145W peak
- Protocols: PD2.0/PD3.0/PD3.1/PPS/ QC2.0/QC3.0/AFC/FCP
- Number of ports: 3 db
- Outputs: 2 Type-C, 1 USB-A
- Inputs: 1 Type-C
- Charging display: LED display
- Crowd: 513 grams
- Sizes: 160x81x27 mm
- Charging time: 1 hours
- Extras: 21700 lithium cells, can be taken on a plane
Who we recommend it to
Zime Pro is a power bank with a very brutal performance, which can deliver 140 W through its two Type-C ports. New technology had to be used for this, the previous 18650 cells were replaced with 21700 cells. It's much cheaper from abroad than at home, so it's worth looking around China. We recommend it to those who need maximum performance and want to transmit and record this at lightning speed.
Why is it out of stock?
The Zime Pro's 140 W is no small feat, it can fully charge a notebook in 1 hour, or recharge itself if you have a good phone charger. The technology behind it is not weak, it is built from 21700 cells, you can follow the output, charge and voltage on the display. In addition, this is a power bank with a capacity that can be taken on an airplane, so we also recommend it with more serious notebooks, since its weight is not terrible either. By the way, the peak value is 145 W, which comes together from 100+45 W, using the 2 Type-C ports.
Specification
- Technológia: Li-Po
- Capacity (mAh): 27 650 mAh
- Capacity (Wh): 102 Wh
- Performance: 140W, 170W peak
- Protocols: PD2.0/PD3.0/PD3.1/PPS/ QC2.0/QC3.0/AFC/FCP
- Number of ports: 3 db
- Outputs: 2 Type-C (28 V), 1 USB-A
- Inputs: 1 Type-C
- Charging display: LED display
- Crowd: 667 grams
- Sizes: 160x81x27 mm
- Charging time: 1 hours
- Extras: 21700 lithium cells, app-based control, Active Shield
Who we recommend it to
You may know the company Anker from the Soundcore sub-brand sound-generating devices, but they are also at home in the field of power banks. Like the Zime Pro, Anker uses 21700 cells, but it has a higher capacity and performance than even that portable battery. We recommend it to those who need maximum performance and are willing to pay a lot for it. We think the Zime Pro is a better buy, but the top is still the Anker Prime 250 W.
Why is it out of stock?
The Anker Prime 250 W can deliver 1 W on 140 Type-C port, and a total of 2 W on 240 ports, at 28 V, which is currently the best on the market. This means that there are not many devices that cannot be filled with energy at lightning speed. The built-in display is quite informative about the charging process, and it also gives statistics on what is happening per port. But those who don't want to monitor things this way can also download the app, which provides additional statistics via a BT module. It is equipped with countless protections, it is called: Active Shield. In a word: full, let's say the price is too.
These are the best phone chargers (2025)
The phone chargers on our list have been selected based on the following criteria:
- more than 10 years, based on our own experience as testers
- we all own several models and use them on a daily basis
- based on the service experience and long-term tests of our previous partners
- based on individual research, which is based on domestic and international customer opinions
- based on opinions read in various forums and special groups
Specification
- Technológia: GaN
- Performance: 140 W peak
- Protocols: PD2.0/PD3.0/PD3.1/QC2.0/ QC3.0/QC4.0
- Number of ports: 6 db
- Outputs: 3 Type-C, 3 USB-A
- Inputs: 1 pc 230 V, cabled, with replaceable plug
- Charging display: LED charge display
- Crowd: N/A
- Sizes: 112x90x34 mm
- Extras: replaceable plug 230 V head
Who we recommend it to
LDNIO is an up-and-coming brand, one of the winners of the Chinese "lame name" competition, but those who can ignore that can find really premium stuff in their offer. The LDINO 140 W is a charger using GaN technology, but the trick is not that, but that the head can be replaced. Have you ever been fed up with the fact that there were different standard connectors abroad? If so, here is the solution. We recommend it to those who are looking for a high-performance travel charger that can power a notebook - and much more.
Why is it out of stock?
I also included the LDNIO 140 W model in the range because this is typically the stuff where the technical parameters can be misunderstood. The charger can deliver a maximum of 100 W at the same time on its Type-C port, but it also provides an additional 40 W for other devices. In other words, always check the technical description, because 140 W does NOT come out on one port in this case. But the rest is also enough for everything, and since LDNIO's product supports several 230 V connection standards, it is therefore an ideal companion for vacations, but also comes in handy when working abroad.
Specification
- Technológia: GaN
- Performance: 100 W
- Protocols: PD2.0/PD3.0/PD3.1/PPS/ QC2.0/QC3.0/AFC/FCP
- Number of ports: 4 db
- Outputs: 2 Type-C, 2 USB-A
- Inputs: 1 pc 230 V, wired
- Charging display: LED
- Crowd: N/A
- Sizes: 97,35x47x46 mm
- Extras: non-integrated 230 V cable
Who we recommend it to
The Essager ES-CD36 is a rather powerful phone charger, the good thing about which is that it has 4 ports at the same time, so you could power several devices from it at the same time. Since it is connected to the 230 V network with a cable - it does not have to be plugged directly into the socket - therefore, if it is damaged, it can be easily replaced and it is easier to get to where it is needed. We recommend it to those who want high performance and, for example, want to place the charger on their desk.
Why is it out of stock?
Essager is a reliable charger and power bank manufacturer that already uses GaN - gallium nitride - technology. This means more efficient charging with a smaller circuit size and lower heat generation. Not incidentally, it has 4 ports, through which it can charge several devices. With the 2 USB-A ports, you can also charge devices with smaller power requirements, while there are 2 Type-C ports for larger ones. In practice, we can say that the replaceable connection cable is very useful, it is much easier to place the charger in the right place.
Specification
- Technológia: GaN
- Performance: 65 W
- Protocols: PD2.0/PD3.0/PD3.1/PPS/ QC2.0/QC3.0/AFC/FCP
- Number of ports: 3 db
- Outputs: 2 Type-C, 1 USB-A
- Inputs: 1 pc 230 V, integrated
- Charging display: LED
- Crowd: N/A
- Sizes: 74x46x31 mm
- Extras: exchangeable 230 V plug
Who we recommend it to
The Essager 65 W is a rather beefy phone charger, the little brother of the 100 W Essager. The same concept, only half the price and a little less power, since not everyone needs 100 W. The difference is that it does not work with a 230 V connection cable, but must be plugged directly into the wall into an outlet, instead it is better as a travel charger, because easier to pack. We recommend it to those who don't need 100 W and want to spend half as much on a charger.
Why is it out of stock?
The range of Essager phone chargers is quite diverse, they make chargers for almost all major power outputs, so they have 20, 25, 45, 65, 100 W, and even more serious models. The Essager 65 W charger also supports a number of protocols and can be used to charge multiple devices. It also uses GaN technology, which means it heats up less than older silicon-based chargers, and it's also smaller, so it's also great as a travel charger. Not to mention how much it costs.
Which didn't make the list, but is worth noting
There are actually countless alternatives to the above. QOOVI models will have USAMS, Ugreen, Essager and many other alternatives, buy the one that is cheaper or has a test because you can validate things with it. Be careful with fake stuff on Aliexpress, which is too cheap or has an unrealistically high capacity and there is no brand name next to it, it is almost certainly not a good purchase. This is also true for power banks and phone chargers, fortunately the Aliexpress discussion forum works quite well and they almost always give the customer the right.
As we wrote before, we cannot recommend the power stations due to their extremely high prices and narrow scope of use, but this is not due to quality problems. We recommend Bluetti's products to those who would still look around the market, they launch really convincing energy storage solutions that work with good use of materials.
ALL TESTED BY US POWER BANK, PHONE CHARGER SE POWER STATION FIND IT ON THESE LINKS!
What is a power bank, power station and phone charger
In Hungarian, they are often written together Powerbank and power station way, but according to English spelling, the two words should be written separately, so power bank and power stations. They are still used to these portable battery also call it, this is also a good term for these devices.
A power bank and the power stations two similar devices, the purpose of which is to provide energy supply in a portable form, but there are significant differences in their size, capacity and purpose of use.
A power bank a portable battery that is primarily used to charge small, direct-current electronic devices such as smartphones, tablets, or smartwatches. The main parts of the power bank:
- Battery cells: most often, lithium-ion or lithium-polymer cells are used to store energy. These its average voltage is 3,7 V, their maximum is 4,2 V, these are important data, remember them, they will be important later.
- BMS circuit: voltage regulator that ensures the correct voltage level for charging and monitors safe operation (overvoltage, overheating, etc.). Its important task is to equalize the voltage between the cells.
- USB connectors: output and input ports through which the device can charge and provide charging. In many cases, a connector is both output and input at the same time (e.g. modern Type-C ports).
- LED indicators: LEDs showing the charge level so the user knows how much energy is left in the device. They usually indicate the charge level with LED dots in 4-5 steps. They are also used to replace it with a display, which shows the percentage of charge and indicates the currently used fast charging standard.
Power banks almost always charge 5 V devices with a USB connector, but due to modern charging standards, the charging voltage can be up to 20 V - even up to 48 V with PD technology, e.g. Anker Prime 28-volt charging - can also creep up. The reason for this is that the current could not be increased indefinitely, and since the electrical work done is the product of voltage and current, they started increasing the former for faster charging. But the point is that the basic logic is 5 V, and accordingly, such devices are equipped with different connectors belonging to the USB standard - in the past USB-A, mini and micro USB, more recently USB-A, Lightning and Type-C. Without exception, these products work with direct current - DC, i.e. direct current.
In contrast, the power stations a larger-capacity, portable power source that is suitable for operating multiple devices, even larger consumers, such as laptops, smaller household appliances or outdoor equipment. The main parts of the power station:
- Battery: larger capacity, usually lithium iron phosphate (LiFePO4) batteries that can store more energy than power banks.
- Inverter: equipment required for the production of alternating current (AC), which also enables the connection of traditional household appliances. Of course, it can also supply direct current (DC) devices with electricity.
- BMS circuit and control: provides voltage regulation and energy monitoring, as well as management of various connectors.
- Csatlakozók: equipped with multiple outputs, such as USB, AC sockets, DC outputs and car adapters, so multiple devices can be connected at the same time. Many times it also has a solar input - MC4 - on it.
- Display: they often have an LCD display that shows the remaining charge, consumption and other information.
- BT module or WiFi: since these are particularly expensive devices, they can usually be controlled by application, as remote monitoring is important.
Although power stations are also able to fulfill the role of power banks, the most important difference beyond size is perhaps that they are able to operate alternating current (AC) devices in addition to direct current (DC) equipment, since they have an inverter. These are typically small kitchen appliances and tools, so they can also be used for expatriates. They store much more energy, but in return they are much heavier and more expensive, weighing up to 50 kilograms. Larger models can also be supplemented with spare batteries, and the input side is much more varied than in the case of power banks. They can be charged directly from a 230 V network, a solar panel, or from a 12 V car cigarette lighter. They can perform UPS - Uninterruptible Power Supply - that is, uninterruptible power supply tasks behind such devices - e.g. PCs, servers - where needed.
A phone chargers I don't think we need to introduce ourselves to anyone. In practice, their internal structure is very similar to the above, with the difference that there is no battery here, only a charging control electronics, and they do not get any extra functions, because there is no need for them. In all cases, they need a 230 V power supply, so they either have to be plugged directly into the outlet or connected to the network with a cable.
There are also solutions integrated into a 230 V distributor - where, in addition to the DC USB and Lightning outputs, there are also AC plugs - so you can charge the members of both groups of devices in combination.
Differences between power bank and power station
In the list below, you can see the main differences between the two types.
- Capacity: power banks usually have a smaller capacity (mAh or Wh), while power stations can store more and even thousands of watt-hours of energy.
- consumption its goal: the power bank is designed to charge smaller devices, while the power station is designed to operate many different devices, even household appliances.
- The existence of an inverter: power banks can only charge direct current devices, while power stations have an inverter that can convert direct current into alternating current.
- Size and weight: the power bank is compact and easy to carry - for example, it can be put in the pocket of heated clothes - while the power station is larger and heavier, but often has a carrying handle or wheels.
- Number and type of connectors: power banks usually offer one or more USB ports, while power stations have a variety of connections, including AC outlets.
Translating the above, in practice the size decides which one you will use for what. A power bank usually weighs less than 1 kilogram, in most cases it can be put in a pocket, but it will definitely fit in a smaller bag. It is typically used to charge phone cases or tablets, but TWS earphones are often used in such devices as well. They sell several orders of magnitude more than power stations. You will mostly need the latter if you want to move somewhere and have more powerful devices - refrigerator, coffee maker, microwave oven, stove, etc. - you want to operate.
Differences between phone chargers and power banks
The biggest difference between power banks and phone chargers is that the former have an energy storage battery, they are called portable batteries for a reason. The charging standards are the same for both product categories, but it is easier to deliver more power by connecting the device to an electrical network.
By definition, phone chargers are not able to store energy, but in return they are usually able to deliver more power. The chargers have a current rectifier, which converts the alternating current extracted from the network into direct current. In fact, this is what the power bank also does, only at the moment of charging, but the battery already stores direct current and also charges direct current devices.
Summarizing the above, you can read the differences below.
Energy source:
- the power bank is one internal battery uses, which must be uploaded beforehand.
- the phone charger a mains power converts it directly into energy suitable for charging.
Mobility:
- the power bank portable and can be used at any time, regardless of network availability.
- The phone charger connected to a power source, so it can only be used where a 100-230 volt plug is available.
Function and application:
- The power bank ideal in an emergency, while traveling or in situations where no other power source is available.
- The phone charger home, office or other indoor location used for fast and efficient charging of the phone or other devices.
Performance and technology:
- Phone chargers also support modern charging standards, such as fast charging, and higher power versions (e.g. 140W or more) also exist. Newer technologies - e.g. GaN – thanks to which they are getting smaller and heat up less and less.
- Fast charging functions are also available for power banks, but their capacity (mAh) and output power vary, and their purpose is more to provide energy storage and on-the-go charging. They typically deliver less power, but there are already 140 W devices that support the PD standard.
Charging devices with low power consumption
To charge low-power devices, it is important that the power source - charger or power bank - can provide a low current, otherwise the devices would be damaged. Such products can usually be charged at a current of 0,5A or less, and cannot be charged at higher currents, as this may damage their batteries or circuits.
More advanced chargers and power banks contain circuits that recognize the needs of the connected device and regulate the output current accordingly. That's what it's called low current charging or "low-power" mode, which is specially designed for charging devices with low energy requirements.
If you do not connect such a charger to the low-current device, it may be damaged. According to our experience, it is much more typical that it does not charge, but flashes a status indicator to indicate that something is wrong.
Charging standards for power banks and phone chargers
The aim of the charging standards is to charge device batteries as quickly, safely and efficiently as possible. Below I list the most important charging standards, including manufacturer-specific solutions, but of course new ones may appear every day, so we cannot cover them all.
There are basically two types of standards, general and manufacturer-specific - proprietary - which some companies have developed for their own devices. Let's start with the general charging standards, which are as follows:
- USB Power Delivery (USB PD): one of the most common universal standards that supports up to 240 W power in the latest version (USB PD 3.1). It is able to dynamically regulate the voltage - up to 48 V - and the current based on the needs of the connected device, so it can be used to charge a wide variety of gadgets, not only phones, but also laptops. Among other things, we also use this, this article was written on a notebook that is capable of 100 W PD charging.
- Qualcomm Quick Charge (QC): developed by Qualcomm and one of the most well-known fast charging standards. There are several versions, the latest QC 5 can provide power over 100 W, while being backwards compatible with older versions. QC dynamically changes voltage and current to ensure faster charging.
- Adaptive Fast Charging (AFC): the standard used by Samsung that enables faster charging and is compatible with some versions of Qualcomm Quick Charge.
- Pump Express: the MediaTek (MTK) charging standard, the latest of which is Pump Express 4.0. 4.0 it is USB Power Delivery (PD) is based on a standard, enabling compatibility with devices from other manufacturers.
- Qi: This is the best known and most common wireless charging standard developed by the Wireless Power Consortium (WPC). It is supported by many smartphones and other devices, including devices from Apple, Samsung and other major manufacturers. It can transmit a maximum of 30 W (Qi 2.0).
Of the above, devices equipped with a Qualcomm SoC - mobile phones, tablets, headphones - almost always support the QC standard. PD is also very common, and some devices can even continue charging, for example notebooks to portable monitors. This is advantageous because with Type-C cables, not only charging, but also image information can be transferred, so in principle, with the right notebooks, this can be done with a single cable. It is also worth knowing that not all manufacturers offer their own fast charging standard, for example Unisoc - formerly Speadtrum - system chips.
Let's see what manufacturer-specific fast charging standards we know:
- Xiaomi - Mi Turbo Charge: developed by Xiaomi and is one of the fastest charging solutions. It is capable of up to 120 W of power - that is, on the market, because there are already 300 W fast charges at shows - which are especially available for the latest models. The Xiaomi Pad 6 series is already capable of 135 W.
- Oppo - VOOC / SuperVOOC: Oppo's own fast charging standard that combines lower voltage with higher current. The SuperVOOC versions can reach a charging power of up to 150 W, which significantly speeds up the charging process.
- Vivo - FlashCharge: developed by Vivo, which exists in several variants. The latest ones offer a charging speed of 120 W, and the manufacturer puts a lot of emphasis on temperature control so that fast charging does not damage the battery.
- OnePlus - Warp Charge / SuperVOOC: OnePlus uses Warp Charge technology, which was based on the Oppo VOOC system. Newer models use SuperVOOC charging, which provides a power of up to 150 W (Oppo, Vivo and OnePlus belong to the same concern, BBK Electronics).
- Huawei – SuperCharge: Huawei's SuperCharge charging technology can provide up to 100 W of power.
- Apple - Fast Charge: Apple uses the Power Delivery (PD) standard for fast charging. The latest iPhone models already support charging up to 45 W, for which the corresponding PD charger must be purchased separately. We must add that Apple's devices are traditionally weak in this genre.
- Samsung - Super Fast Charging: Samsung's newer phones support the Super Fast Charging standard, which uses the PPS (Programmable Power Supply) solution based on USB Power Delivery and can reach a charging power of up to 45W. Samsung Galaxy S and Note series phones use this technology.
- Poco - HyperCharge: The charging technology used by Poco, which can reach a charging speed of up to 120W. Due to the close relationship between Poco and Xiaomi, the HyperCharge technology is often based on the Xiaomi Mi Turbo Charge solutions.
- Motorola - TurboPower: Motorola's TurboPower charging technology is similar to Qualcomm Quick Charge and can deliver up to 30W of power to compatible devices.
It is important that the above standards will only work if the phone charger or power bank on the other side also supports them. Since the manufacturer's standards are not supported by all devices, almost all devices can be loaded with several standards at the same time. If the charger/power bank also supports such a thing, then they charge with the manufacturer-specific standard, if not, then with the general one.
The capacity of power banks - Why not as much as it is?
One of the most important selection criteria for power banks and power stations is capacity, which shows how much energy they can store. Many manufacturers indicate how many times their batteries can charge a type of phone, they typically use some models of iPhone as an example.
The unit of capacity is the milliampere-hour, abbreviated mAh. And the work done during the given time is in watt hours, that is Whis given in But how does the work come together? Very simply, you have to multiply the current and the voltage, that is, P=U*I, where P is the work, U is the voltage, and I is the sign of the current. What's the point of all this? To be able to convert the milliampere-hour to watt-hour, in which, for example, the size of notebook batteries is specified.
I mentioned earlier that the average voltage of lithium-ion and lithium-polymer batteries is 3,7 V - this is the U component - while, say, the capacity is 10 mAh (000 Ah), multiplying the two gives the work done by the electric current. 10*10=3,7 Wh. A few typical examples of power banks:
- 5000 mAh = 18,5 Wh
- 10 mAh = 000 Wh (the capacity of an average-sized power bank)
- 20 mAh = 000 Wh
- 30 mAh = 000 Wh
And so on. Of course, this is just the theory, but what happens when you want to charge a mobile phone? The fact that phones need to be charged at 5V means multiplying the capacity by 3,7/5, or 0,74 - the ratio of battery voltage to cell phone voltage. In theory, you should also take into account charge loss - for example heat - but let's ignore that for now, let's just take into account the conversion rate resulting from the up-transformation. Therefore, a Poco phone with a capacity of 5000 mAh will not be charged twice by a 10 mAh power bank, but only roughly one and a half times. In this way, you can already calculate how much battery you need to buy to extend the operating time of such devices. That's why the more famous manufacturers give you one rated power also a value that reflects what the capacity would be at 5 V.
Of course, the matter is not that simple, since the new standards support 9, 12, 15 and 20 V charging, and the maximum voltage of the charged battery cell is 4,2 and not 3,7 V, so actually only you will find out the truth when you actually try it, how many times the power bank can actually charge the given device.
Performance of power banks, power stations and chargers
One of the most important parameters in relation to power banks and power stations is the output, but I would start with the chargers. There is a very simple reason for this, the power output of the chargers is constant, as is their power source. Two performance values are usually specified (this is also true for power banks and power stations):
- maximum output power: this means the power that can be delivered by all ports together, let it be 140 W for the sake of the example.
- power delivered on a port: different ports can deliver different power, for example a PD can deliver up to 100 W through a Type-C port, while a USB-A can probably only deliver 15 W.
The trick is usually that the manufacturers do not define exactly which data it is, and write that it is 100 W. This can be the power of a single Type-C port, but it can also be the total power of 5 USB-A ports, and this is not it doesn't matter. As for power banks, they are special in that the Type-C ports of newer models are often both inputs and outputs at the same time. If the battery can absorb current, it is an input, and if a device draws energy from it, it is an output. These ports typically emit or absorb the same amount of energy as input and output.
In the case of power stations, the situation is more complicated in that much more serious machines can be connected to their traditional 230 V outputs. These are high-performance devices using alternating current, where it is of utmost importance that they get the right performance. Typical consumption of some small machines:
- espresso coffee machine: 1500 W
- microwave oven: 900 W
- iron core hob: 1000/2000 W (smaller and larger hob)
- stick blender: 300-500 W
- cooler: depending on the size, 200-400 W
The power stations work in such a way that if more power is needed than the maximum output - peak - power, they are switched off, and if the power is lower than the peak power, but the total more power than performance is needed, even then. Example: 1000 W peak power does not drive an espresso coffee machine - 1000 W < 1500 W -, while 1 microwave oven 1000 W > 900 W - yes, but 2 units - 1000 W < 900+900 W - again no.
The more serious power stations are designed in such a way that additional batteries can be connected to the central part of some models, with which not only the capacity but also the power that can be delivered increases in some cases. Therefore, before you buy anything like that, check the description to see how much it costs.
How safe is a power bank/power station and a phone charger?
Typically in power banks lithium ion vagy lithium polymer batteries are used. These can be a fire hazard, but specific accidents are very rare and can usually be traced back to user negligence, direct physical impacts, short circuits and other problems that are relatively easy to avoid. On the contrary, in the case of newer power stations lithium iron phosphate - They use LiFePO4 technology, which is much more stable and almost completely non-flammable.
Fortunately, all such devices have a number of protections, typically consisting of the following:
- Overcharge protection (Overcharge Protection): power banks and power stations automatically stop the charging process when the battery is fully charged. This protection prevents the battery from being overcharged, which could damage the battery cells, reducing its life.
- Protection against over-immersion (Over-Discharge Protection): over-discharge protection ensures that the battery does not discharge to a level that could damage it. If the battery voltage drops too low, the system cuts off the power to protect the battery cells.
- Overcurrent protection (Overcurrent Protection): this protection prevents the power bank or power station from emitting a current that would overload the connected device or the battery itself. If the current becomes too high during charging, the system will automatically interrupt the charging.
- Overheat protection (Overtemperature Protection): the protection against overheating monitors the temperature of the power bank/power station or charger using a sensor. If the temperature of the device exceeds a safe level, it will automatically turn off to avoid damage to the battery or other components, or the risk of fire.
- Short circuit protection (Short Circuit Protection): in the event of a short circuit, the power bank or power station automatically cuts off the power supply to prevent damage to internal components and connected devices.
- Surge protection (Overvoltage Protection): overvoltage protection ensures that the output voltage of the device does not rise to a level that could damage the connected device. This is especially important for fast-charging devices, where voltage fluctuations can be a problem.
- Low voltage protection (Undervoltage Protection): this protection prevents the battery voltage from dropping to a level that could damage it. If the battery voltage is too low, the system stops charging.
- Automatic switch - off (Auto Shut-off): when the device is not in use, the power bank or power station automatically turns off to minimize energy consumption and protect the battery.
- Balancing circuit (Battery Balancing): power stations and power banks consist of several cells, and therefore voltage balancing is necessary. The balancing circuit ensures that the different battery cell voltages are roughly the same, which increases battery life and efficiency and keeps output stable.
Phone chargers have similar built-in protections, even though they don't contain batteries. That is why certain things should not be done with these tools:
- exposed to high heat (e.g. throw it into a fire or put it next to a heating device, but don't even leave it in a car in the hot sun)
- pierce or cause physical injury
- to short circuit
- to overcharge
- drain completely or keep it in a discharged state for a longer period of time (low voltage damages the cells)
- place in a wet environment
- to open vagy to take apart without expertise
- chemical materials to expose
Following common sense, it is difficult to get into a situation where any battery would cause danger, but based on our experience, the following are always warning signs:
- if the device too it's getting hot, uncomfortably hot to the touch
- if the device humps up, mostly typical of power banks
- if the device makes a hissing sound, typical of chargers, usually indicates a problem with one of the circuit elements
In this case, the devices must not be used, and another must be purchased instead.
Power banks and aviation
I read in some places that power banks must comply with the certifications of certain organizations, such as the International Air Transport Association (IATA), but I could not find any official source for this. This is not to say that batteries are not subject to relatively strict regulations. You can find these in the regulations of the respective airlines, and there are certain rules of thumb that are similar almost everywhere:
- capacity limit: usually 100 Wh, roughly equivalent to 27 mAh (Smartwings), but e.g. Ryanair and Lufthansa allow 000 Wh - 160 mAh
- maximum 2 pieces can be delivered to one person
- just in hand luggage power banks can be delivered
The bottom line is that 90% of power banks fit into the above restrictions, but devices over 30 mAh will not be allowed on the plane. Some models also have the inscription "allowed on the aircraft" or "on the aircraft", which ensures that the airlines allow the device on their flights, such as the Xiaomi Power Bank Pocket version.
On what basis should you choose a power bank and phone charger?
Basically, in this chapter, we share our own experiences with you, rather than giving you some general list. Since we tested dozens of such devices, the three most important parameters are the following:
- a capacity
- a performance
- and of course it is AR
Let's start with capacity, which is very closely related to size and mass. A power bank with a capacity of 10 mAh can be considered as basic, the smaller ones are usually for special use – for example, for heated clothing or emergency charging – while the larger ones are used to power the charging of notebooks, consoles – Nintendo Switch – and other devices that require significant power. In other words, if we sort power banks according to capacity, they can roughly be classified into the following categories:
- Capacity less than 10 mAh: for small devices, earphones and headphones, activity meters, smart watches, heated clothing (e.g. ski gloves)
- 10-0000 mAh capacity: phones, tablets, heated clothing, notebooks (if they support the PD standard), and of course everything we listed in the previous category
- More than 20 mAh capacity: like the previous ones, but for charging devices with higher consumption, direct current, such as notebooks, laptops, monitors, Nintendo Switch, etc.
The other is a output power, that is, the maximum number of watts it can deliver on a single port. In general, the performance of ports is not the same, and you can often guess what they are capable of from their type:
- USB-A: Quick Charge is commonly known as a general protocol, QC 4.0 is capable of 27 W. In principle, there is QC 5.0, which is also compatible with the PD standard and delivers up to 100 W (20 V 5 A).
- Type-C: there is often a controller supporting the PD standard behind it, so the output of 45-100 W is almost standard, but there are already 140 W units on the market.
- lightning: they are basically used by Apple devices, they used to output 10 W, but since they support the PD standard, they also reach 30 W output.
It is important that not only the power bank must have such a port, but also that the underlying controller must support the standards. Just because a power bank has a Type-C port does not necessarily mean that it can use the PD standard, but this is rare nowadays. Also it is also worth paying attention to the maximum voltage delivered by the device, because we have already run into an error because of something like this. Even lower-mid-range phones can charge with 33 W, and 66 W is not uncommon in the mid-range. Top-of-the-line products can absorb energy with up to 90-100 W, so calculate with this if you want to charge with the factory's maximum output.
Also the number of ports can be an important aspect, if you want to charge several devices at the same time, but phone chargers are more suitable for this. However, you should know that simultaneous charging of devices using different charging standards often causes power banks and chargers to switch between standards, in which case the devices cannot charge at their maximum capacity. It's also worth noting that PD multi-port chargers always "restart" when you connect another device to them, in which case they disconnect for 1-2 seconds and then start charging again.
A power stations they differ somewhat from the power bank logic, as these are more serious devices. The two main aspects here are also a capacity and the performance, but the mass is also unimportant, but here it is not the direct current, but the alternating current devices that matter. But which is which? Here is a non-exhaustive list:
- direct current (DC-direct current): activity meter, smart watch, telephone, earphones and headphones, BT speaker, tablet, notebook, game consoles (e.g. Nintendo Switch), power banks and virtually all battery-operated devices.
- alternating current (AC-alternate current): small and large kitchen appliances, ovens, refrigerators, larger lamps, other high-performance technical devices such as tools.
DC appliances typically do not consume more than 100 W, while kitchen appliances can consume roughly anything between 300-3000 W. As a result, the performance of power stations is not usually adjusted to the direct current side. We don't think it makes much sense to buy power stations with less than 1000 W peak power, but 2000 W gives even more security, a coffee machine, for example, easily consumes 1500 W. The more performance you want, the higher the price will be.
The other is the capacity, which is given in watt-hours, which of course can be converted to milliampere-hours if we know the voltage, but these are also models with thousands of Wh, so it doesn't really make sense to convert them to mAh. This also shows that these devices are not for phone charging, but they also serve the direct current side with countless ports and even wireless charging.
It should also not be forgotten that even the smallest models weigh several kilograms, but there are also those that are half glazed and roll on wheels, and this is only the central unit containing the inverter and BMS. Therefore, their movement must be planned, but they can also be charged from the generator of the car - or camper van - while driving. Although several manufacturers write that these are "portable" devices, this should not always be taken seriously, here is a good example of Fossibot F3600 Pro in person.
However, their prices are so high for the time being - a Fossibot F3600 Pro set with additional batteries and a solar panel is roughly HUF 1,5-2 million - that we don't really see the group of people who would buy the power stations en masse. But since the price of batteries has fallen by a tenth in the last 10 years, they will surely become much cheaper in the near future.
Advantages and disadvantages of using power banks, power stations and phone chargers
The three device groups use similar technology
Advantages of phone chargers:
- they are cheap
- they are portable
- they usually have a higher performance than power banks
- there are multi-port models
- they also integrate something like this into some 230 V distributors
Disadvantages of phone chargers:
- they don't have batteries
- not all chargers charge devices with low power requirements (USB-A ports usually do)
Advantages of power banks:
- small, easy to carry
- they can charge devices anywhere
- they can also be used to fill heated clothing
- most models also handle low power devices
Disadvantages of power banks:
- more expensive than a charger
- they cannot charge devices that require alternating current
- the bigger they are, the heavier they are and the more space they take up
Advantages of power stations:
- can be expanded
- huge capacity
- they are powerful
- can be monitored remotely
- can be charged from several power sources (solar panel, 12 V car charger, 230 V network)
- plenty of outputs for DC and AC devices
- LiFePO4 solutions are safer than lithium-ion/lithium-polymer power banks
Disadvantages of power stations:
- very high price
- lower energy density due to LiFePO4 technology
- they can be brutally difficult
- in many cases it is difficult to find what good these are for the average person, apart from special use
Frequently Asked Questions
What power bank should I buy?
The most important thing is to define what you want to use these tools for. Many readers make Excel spreadsheets of performance, capacity, and price, buy the device, and then realize that it is heavy and large, making it uncomfortable to carry around.
If you have no idea how to approach the matter, we recommend a flat, pocketable power bank with a capacity of 10 mAh and fast charging.
What capacity power bank should I buy?
It mainly depends on the use. A 5000 mAh power bank cannot charge an average Xiaomi phone with a 10 mAh battery twice – roughly 000 times – while an iPhone can. An earphone, on the other hand, more than ten times, and an activity meter dozens of times.
The power will tell you how fast the power bank charges, where higher is better. So the capacity tells you how many times, and the performance tells you how fast, depending on this, select the appropriate model.
Which is the best power bank?
The fact is that there is no best power bank, since no one manufacturer really dominates the market. However, if we had to name a single nation that conquered this product category, it would be the Chinese. Some trusted brands:
- Xiaomi
- ZMI (Xiaomi sub-brand)
- USAMS
- Awei
- Baseus
- Swissts
- Anker
- Ugreen
- QOOVI
- Teclast
- BlitzWolf
- Lenovo
- McDodo
- Essager
Of course, all major manufacturers – Apple, Samsung, Huawei, etc. - produces energy storage devices under its own brand name, these are also reliable pieces, but they are more expensive. Roughly the same is true for chargers, you can easily buy products from these brands.
We had bad experiences with the Kuula brand, and Bakeey has a particularly bad reputation, it's no coincidence that they are cheap, but even they have good pieces. You should avoid very no-name power banks, as they are almost always a scam.
Which is the best power station?
Although power stations are not yet a widespread method of energy storage, with the decrease in the initial cost of batteries, these devices will become much more accessible in the near future. A few brands are already on the market:
- Bluetti (best quality but high price)
- Fossibot
- flash fish
Of course, other device manufacturers also offer such solutions, such as Oukitel, DaranEner, Mango Power and so on.
How durable are power banks and power stations?
Power banks are usually equipped with lithium-ion or lithium-polymer batteries. The former can withstand 300-500 charging cycles - a power bank can fail in a couple of years - lithium-polymers can withstand 500-600 charging cycles without loss of capacity. After this number of cycles, the degree of degradation is approximately 20%, i.e. the capacity of the batteries drops to 80%.
In contrast, lithium-iron phosphate - LiFePO4 - batteries have a lifespan of 2000-5000 cycles, or even more, which means a much longer lifespan, in addition, these solutions are even safer, but have a lower energy density, so compared to a Li-Po battery with the same weight, it is smaller can demonstrate capacity.
Where should you buy a phone charger and power bank? From China or from home?
The strange situation has developed in the market of power banks, that both sources of purchase have a right to exist.
From China buy a power bank:
- much cheaper
- the selection is greater
- slower delivery (unless in EU warehouse)
- there are fraudulent models (in this case the platform almost always reimburses)
In most cases, power banks cannot be put on a transport plane, so they usually come by ship, which is very slow, it can take 30-60 days. Unless the stuff is in an EU warehouse, but that's rare.
In contrast, the from domestic sources acquired bower banks:
- they are more expensive
- the markup of well-known brands is simply ridiculous
- fast delivery (Alza delivers within 24 hours)
- the warranty can be enforced much more easily
In fact, according to our experience, these devices don't break down much in 1-2 years, so you don't have to worry about something breaking down within the warranty period, but if it does, it's obviously easier to fix it at home. Personally, we have already purchased such a device from all three sources - China, Chinese from the EU warehouse, from home - so none of the ideas can be dismissed. However, if the matter is not urgent, then I was better off buying from the Chinese warehouse.
Is it worth buying a Xiaomi power bank?
Yes, we have particularly good experiences with the manufacturer, they offer great quality at a realistic price. However, the competition is so great that you can often find similarly good but cheaper purchases from other brands.
What is MagSafe?
A MagSafe a technology developed by Apple for charging and attaching accessories to various devices such as MacBooks and iPhones, magnet help. MagSafe was originally designed for MacBook laptops, and later its new version also appeared for iPhones, where it functions as a wireless charging and additional fastening solution.
Which power bank should you buy for iPhone phones?
As it is lightning connector, although for some time now only Type-C port devices can be marketed in the European Union. Distributed by Apple magnetic power bank capable of wireless charging, but the price of this is shockingly high, just as the Apple accessories running under the domestic iStyle brand are also unrealistically expensive. Fortunately, countless manufacturers offer similar solutions, such as Hinovo, which we wrote here, but Kuulaa and LDNIO also make such products.
High performance power bank and power station? What is it?
High power is a bit difficult to define, but we can accept that a power output greater than 33 W on one port can be considered high for power banks. Of course, this is a significant underestimation in the world of power banks, where up to 100 W are output per connector, and which can easily power a notebook and a monitor.
In the case of power stations, the subjective high output is set above 1500 W, this is enough for most small kitchen appliances, for example, you can cook coffee and a small stew with the help of kettles.
Can power banks and chargers be taken on a plane?
Up to 100 Wh, yes in hand luggage, but some airlines allow 160 Wh and two pieces per person.
What devices could you charge with a power bank and power station?
With power banks, you can charge almost anything that can be charged via USB, but make sure that the connectors - mini/micro USB, Type-C, Lightning - are correct. In the case of a power station, in addition to USB devices, 230 V devices with a standard plug, power supplies equipped with a DC-in connector, and everything that can be connected to a 12 V cigarette lighter.
Some power banks and power stations can also charge devices wirelessly - Qi standard.
Can multiple devices be charged in parallel from power banks?
If it has several ports, then yes, but in the case of devices that require different protocols, the power bank typically cannot charge all devices with specific, not manufacturer-specific, protocols.
Which devices equipped with ports should you buy?
Primarily something that is used to mount your devices, but nowadays Type-C is almost completely part of the standard equipment, and it is also good to have at least one USB-A port.
How does the power bank indicate its charge?
There are two options, one of which is that an LED strip or dots mark the charge in 4-5 steps, and in some cases, fast charging is indicated by discoloration. The other version is if a display is built into the power bank, which shows the same percentage and also indicates the current fast charging standard with small pictograms.
Can power banks and power stations charge wirelessly?
Yes, if it is mentioned in their description. They usually use the Qi standard, which is 5 W by default, while Fast Qi Charging is 15 W, but more recently they are also capable of 30 W (Qi 2.0).
What is GaN technology?
GaN stands for Gallium Nitride technology, it is based on a new type of semiconductor material that is energy conversion devices, for example, are used to develop chargers. GaN technology allows chargers to be smaller, lighter and more efficient than traditional silicon (Si) based chargers. GaN chargers can deliver up to 300 W.
How do you know about a device that one of its technical parameters is incorrect or that it is simply a scam?
First of all, you should be suspicious if the product seems too cheap compared to what it can do. If the brand name is not indicated, but all kinds of logos are attached to the product in the press material - it is very typical that Xiaomi is lying about the power bank - it is also suspicious.
Another trick is to write the power in the brand name as XYZ 120 W, which does not refer to the real power, but only serves to deceive the consumer. It is always worth reading the consumer reviews, because where there are a lot of negative reviews, there should be a minimum of suspicion.
Source: Aliexpress screenshot
There is also a problem with the capacity - the picture shows 200 (!) mAh - which is rather difficult to measure. There are capacity measuring testers that we also use, but the result obtained can often mislead laymen, because the value will be almost 000% lower than the value given by the factory. The reason for this is as follows:
- the testers do not measure at 3,7 V - this is the middle voltage of Li-ion/Li-Po batteries - but at 5 V, so the result obtained must be multiplied by 5/3,7, which is roughly 1,35 .
- the filling/immersion cycle does not take place without loss, but rather loss heat is generated, so roughly another 10% - but there is a deviation - must be added to the measured value.
- thanks to the technological peculiarities, there is a deviation in production, which can be 5-10%.
As you can see, the real capacity is rather difficult to determine, only approximate values can be determined.
How important is the cable for phone chargers and power banks?
A lot. In order to deliver high performance from an energy storage device, you need a cable with a suitable cross-section. Therefore, it is worth buying the 100 W variant of the ones equipped with a Type-C connector, and also the one that is suitable for transferring not only current, but also data.
Why doesn't my device charge in as much time as the manufacturer claims?
Charging does not take place linearly, but at the beginning of charging, the phone charger or the battery pumps energy into the phone very quickly, then at the end of the charging process it slows down and the devices switch to "trickle charging", thus equalizing the voltage between the cells. More recently, manufacturers have been giving relatively accurate charging times, and we have even very rarely experienced devices charging minimally faster than the specified values.
If you couldn't find one of your questions in the FAQ, or if we didn't have a clear answer, then contact us at one of our contact numbers listed on the page or on Facebook. To the best of our knowledge, we try to answer all questions about power banks, power stations and chargers!
Specification