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best power banks

The 11 Best Power Banks in 2021

Author: Robert Wilson

Electronics & Peripherals Expert

best power bank

Many consumers nowadays use different electronic devices in everyday life, such as smartphones, tablets or bluetooth speakers. If you use this technology every day, then you are aware that the batteries are empty very quickly. An annoyance that is easy to avoid! With a good power bank you always have an energy storage with you that fits in every pocket. You won’t run out of power even on long days.

But which power bank is best suited for you? After all, the range of power bank models is immense and there are hundreds of different brands. We therefore present 11 power banks from the top manufacturers Anker, AUKEY and Co. together with their features and show you what you should pay attention to when using them. 

You can decide which model best meets your personal requirements. 

Table of Contents

Power Bank in Comparison

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What is the best Power Bank?

1. Anker PowerCore 20.100 mAh

Power bank with an extremely high capacity

When choosing a mobile power bank, you should pay attention to the capacity. The higher it is, the more charging cycles you can carry out. The Anker PowerCore Powerbank is a model that is one of the bestsellers on Amazon and has a capacity of up to 26,800 mAh.

The manufacturer Anker offers this power bank in four different capacities and three colors to order. What is interesting about this portable charger is its compact design. With a length of 16.6 centimeters, it is only slightly longer than a normal triangle, which usually measures 14 centimeters. With a width of 5.8 centimeters and a height of 2.2 centimeters, the narrow device fits well in your pocket.

This power bank supports PowerIQ technology, which allows quick-charging for those electronics devices that allow it. PowerIQ is a fast charging technology specially developed by Anker that recognizes your connected hardware and adjusts the charging current accordingly. Any device, whether from Samsung, Apple, Kindle or another brand, can be charged as quickly as possible.

The weight of the Anker PowerCore Powerbank is 355 grams, so it can be conveniently stowed away for mobile use or for transport. Anker also provides a certified security for this model. Thanks to the multi-protection safety system, connected devices are protected to the maximum, so that overvoltage short circuits or the like cannot occur.

How often can I charge my smartphone with the Anker PowerCore power bank?

How often you can charge your smartphone or other devices with this power bank until the battery of the power bank is empty depends on how high the battery capacity of the device to be charged is.

Does the device discharge when not in use?

No, the Anker PowerCore power bank does not discharge itself automatically when it is not being used. You can charge it a few days before and use it later. After a long charge, you should still check the charge level beforehand as a precaution.

Can I charge and use the power bank at the same time (pass-through)?

No, the Anker PowerCore Powerbank does not have a pass-through mode. However, this is also generally unnecessary for a power bank: If you already have an outlet for charging the power bank, you can plug your smartphone or other device into it as long as the battery of the power bank is charging.

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2. Poweradd Pilot X7 20000 mAh

External battery

From the Poweradd brand, we want to introduce you to a power bank that has a lower price compared to others. This model is equipped with a 20,000 mAh battery, with which most smartphones can usually be charged several times. For example, an iPhone X can be charged about seven times.

The LEDs on the housing surface of the Poweradd show you the charge level. Charging can be started easily by connecting the electronic devices to the power bank. If the connected device is fully charged, the Poweradd stops the charging process automatically.

What are the dimensions of the Poweradd X7 power bank?

This power bank is 15 centimeters long, 8 centimeters wide and 2 centimeters high.

How heavy is the power bank?

The Poweradd X7 weighs around 400 grams.

Can I charge and use the power bank at the same time (pass-through)?

Yes, this model has a pass-through mode

How many devices can I connect for charging at the same time?

The Poweradd X7 Powerbank has two charging sockets. You can easily charge two devices at the same time. The third connection on the device is an input that is used to charge the power bank itself.

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3. EC Technology Powerbank

22400 mAh capacity

Another good power bank is the model with 22400 mAh from the manufacturer EC Technology. This external battery with a practical LED status indicator, like all power banks, can be used for many different devices, such as smartphones, tablets and more. With this model, however, you can charge up to two devices at the same time, so you benefit from flexible application options.

As a further special feature, you can also look forward to the Multi-SafeGuard feature on this solidly crafted power bank. Overvoltage short circuits are automatically detected and thus prevented, so that maximum safety can be guaranteed. This also protects against overcharging, which is a further advantage for the EC Technology Powerbank.

How do I see if the power bank is full?

For this you should check the LED status display.

Is a cable included?

Yes. You will find a micro USB cable in the package of the EC Technology Powerbank.

How heavy is the EC Technology Powerbank?

The battery weighs a total of 288 grams.

How can the lifespan be assessed?

Up to 500 charging cycles should be feasible with the EC Technology Powerbank.

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4. Anker PowerCore 5,000 mAh power bank

Super compact portable charger

If a small power bank is an option for you, the PowerCore model from Anker is more suitable for you. The tube-shaped device measures only 10.8 centimeters in length and 3.3 centimeters in diameter and therefore fits in any jacket or pocket. It is lightweight at just 90.7 grams. This external battery with 5,000 mAh, for example, charges the Apple iPhone 6S twice and the Samsung Galaxy S7 completely at least once. Here you benefit more from a particularly compact design, with which you can ensure a short energy boost. However, if you have to live without an outlet for several days, this model is not suitable.

Just like the much bigger brother of the Anker PowerCore, this model also offers the manufacturer’s practical high-speed charging technology (PowerIQ). The device is based on two charging techniques so that each device can be charged as quickly as possible: The combination of VoltageBoost, which prevents cable resistance, and PowerIQ ensures the fastest possible charging of your devices.

Can I charge my cell phone while the power bank is charging?

No, this power bank does not have a pass-through mode. No other device can be plugged in while the power bank is charging.

How stable is this power bank?

The Anker PowerCore is made of robust plastic and is well suited for outdoor use.

Does the device discharge when not in use?

This power bank loses little battery capacity even if it is not used for a long time. It can be stored for several weeks without major losses. Nonetheless, you should check the charge level before use to be on the safe side.

How quickly can the PowerCore be fully charged?

Due to the low battery capacity, a full charge does not take much longer than charging a smartphone. You can expect a charging time of around 2 hours.

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5. Tronsmart Trim 10,000 mAh power

18 watts of power

The Trim 10,000 mAh power bank from Tronsmart is ideal for anyone who values a space-saving design and a fast charging time. Once the 10,000 mAh battery is fully charged, which takes about 4 to 5 hours, you can use the portable charger to fully charge most smartphones two to three times. And it does this very quickly: For example, an iPhone X can be brought from 0 percent to 50 percent battery status within just 30 minutes.

Although the Tronsmart Trim Powerbank is only 1.2 centimeters thick and weighs a light 195 grams, it offers two outputs for charging any two devices with a USB connection at the same time. The fast charging mode supports most of the popular smartphone brands such as Apple, Google, Huawei or Samsung.

This power bank is particularly suitable for you when you are traveling and want a small, flat device that gives you power quickly and reliably. Of course, the Tronsmart Trim Powerbank is protected against short-circuit, overvoltage, overcurrent and overcharge with protective functions and the manufacturer also grants a guarantee of 18 months.

What is the maximum power the Powerbank delivers?

The Tronsmart Trim 10,000 mAh power bank delivers up to 18 watts of power to charge your devices at maximum speed.

Can I charge my tablet too?

Of course, you can also charge your tablet with the Tronsmart Powerbank. Again, the fast charge mode supports most Android devices from popular brands.

Is the device suitable for traveling?

This power bank is ideal for traveling. It is 14.3 centimeters long, 7 centimeters wide and only 1.2 centimeters thick and weighs 195 grams. This way your backpack will not be carrying too much extra weight. There is also a small bag included.

Is the power bank delivered charged?

The device is usually delivered with a factory charge of 50 to 75 percent. So you can try it out right away. However, it should be fully loaded again before the first correct use.

6. Poweradd Pilot 4GS

12,000 mAh and aluminum housing

The manufacturer Poweradd offers another alternative in the power bank market. The Pilot 4GS model offers a total of 12,000 mAh and ensures a sufficient charge volume to be able to supply smartphones with energy several times. It is particularly suitable for Apple users, as it has an iPhone 8-pin cable connection and, for example, the iPhone series X, 7, 6 and 5+ can be charged without an adapter. Of course, devices from other manufacturers can be charged with this power bank.

With the Pilot 4GS 12,000 mAh power bank, the manufacturer Poweradd uses a compact plastic housing and aluminum, which not only makes an elegant impression, but is also very robust. This model automatically recognizes which device is connected and optimally adjusts the current intensity. You benefit from the fastest possible charging option.

How do I find out how much power the battery has left?

Just press the white button next to the LEDs. If all four LEDs light up, the power bank is fully charged. The fewer LEDs that light up, the lower the battery level.

How heavy is this power bank?

The Poweradd Pilot 4GS Powerbank weighs 278 grams, a little more than a piece of butter.

Is there a guarantee?

Yes, the manufacturer grants a 2 year warranty on the power bank.

How many devices can be charged with the Poweradd Pilot 4GS at the same time?

You can have two devices charged on this power bank at the same time.

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7. EasyAcc 20,000 mAh

compact and powerful

The EasyAcc brand, which sells its technical devices primarily on Amazon, also offers a power bank that has received very good ratings from buyers. With a capacity of 20,000 mAh, the EasyAcc Powerbank ensures that you can charge your electronics devices conveniently on the go.

With the Apple iPhone 7, a full 20,000 mAh EasyAcc power bank battery can charge a good seven and a half charges. The Samsung S8 has about five charges due to the larger battery. You can look forward to sufficient capacity to guarantee mobile energy supply. If you need even more power, the power bank is also available in a 26,000 mAh version.

Many customers who have committed themselves to the EasyAcc Powerbank praise not only the workmanship but also the compact design. The EasyAcc Powerbank can be stowed comfortably in most pockets despite its high battery capacity. It is 16.7 centimeters long, 7.9 centimeters wide and 2.2 centimeters high. The device also has a flashlight function.

How is it possible that this power bank charges so quickly?

The EasyAcc Powerbank not only has one charging input, but two. In this way, it can absorb twice as much energy as conventional power banks during the charging process.

How heavy is this power bank?

The EasyAcc 20,000 mAh power bank weighs 454 grams.

How do I use the flashlight function?

Simply press the power bank button twice in succession to switch the integrated flashlight on or off.

Do I have to connect the power bank to two sockets for charging?

You can connect the power bank to just one socket for charging. However, it only charges as quickly as conventional power banks.

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8. ToHLo power bank

LED display included

A power bank that scores with good ratings is the model by the manufacturer ToHLo. Compared to many other models that we have presented to you here on this page, this power bank is characterized by an LED display that shows the current state of charge and does not have the classic LED lights. You can conveniently and accurately check the charge level, which is really practical.

The ToHLo external battery has a capacity of 20,000 mAh and can be used for multiple recharging processes on standard smartphones. An iPhone X can be charged about five times before the power bank has to be plugged in again.

With such a large battery capacity, you cannot count on a slim design. The power bank measures 15.5 centimeters in length, 7.5 centimeters in width and 1.5 centimeters in height, which is normal given the 20,000 mAh capacity. If the largest possible capacity is very important to you, this power bank is a good choice for you.

How many devices can be charged on the power bank at the same time?

The ToHLo Powerbank has two charging outputs. You can charge two devices at the same time. The second output is also a quick charge output: This means that you can charge an iPhone X here in just one and a half hours, while it takes about two hours for the other output.

How does the digital display work?

The battery level indicator of this power bank works in principle like any conventional smartphone: The remaining battery level is displayed in percent.

How much does this power bank weigh?

The ToHLo 20,000 mAh power bank weighs 356 grams.

How long does it take for this power bank to be fully charged?

When you connect the device to the wall socket, it takes about 8 hours until the internal battery is fully charged.

9. Poweradd Pilot 2GS Powerbank

cheap and slim

The Poweradd brand from the Poweradd brand is characterized by a chic design and a 10,000 mAh capacity. With a height of 1.3 centimeters, the Pilot 2GS model is very slim and therefore easy to transport in everyday life. A total of two USB outputs are available here. The simultaneous charging of several devices is not a problem with the Poweradd Pilot 2GS power bank.

The Poweradd Pilot 2GS supports a strong 2A input current. This battery can be easily charged within just 6 hours. This is very time-saving, but you cannot expect a huge battery capacity. With its 10,000 mAh, the model still manages to charge an iPhone 7 or a Samsung Galaxy S7 twice..

How many devices can be charged on the power bank at the same time?

This power bank has two charging outputs that can be used simultaneously.

Can I also charge the power bank on my PC?

Yes, like other power banks, you can charge the Poweradd Pilot 2GS not only at the socket, but also at the USB output of your PC or laptop. However, this takes longer than when you charge it from the socket.

How much does the Poweradd Pilot 2GS Powerbank weigh?

This model weighs only 276 grams.

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10. Charmast Powerbank

an energy storage device with three inputs and four outputs

If you require a large capacity and a very flat design for your power bank, the model of the Charmast brand might well be suitable for you. This is a power bank that is only 14 millimeters thick, which makes it particularly compact and easy to store in a bag.

It is very interesting with the Charmast Powerbank that a total of four outputs are available. There are three classic USB ports and a modern Type-C port that can be used for the latest electronic devices. The manufacturer relies on the so-called iSmart identification technology. This offers the advantage that the fastest possible charging speed is always supported for all connected devices.

The Charmast Powerbank has a practical LED display that describes the current battery status. A classic on and off switch is also available on the device.

Of course, this model is also suitable for transport in an airplane. With the Charmast Powerbank you benefit from a successful compromise between a compact size and a particularly high capacity. Wide compatibility with all devices is also supported, so it doesn’t matter whether you connect an iPhone, a Nintendo Switch or a tablet.

How many devices can be charged on the power bank at the same time?

Up to four devices can be charged.

How to check the battery status?

The current charge level of the battery is displayed in the form of LEDs.

How much does this power bank weigh?

This model weighs a total of 430 grams.

How long does it take for this power bank to be fully charged?

You have to plan up to eleven hours for this.

11. RAVPower 26,800 mAh power bank

huge battery capacity

This power bank from the RAVPower brand has a capacity of 26,800 mAh and can charge all popular smartphones several times from 0 to 100 percent, which is very practical in everyday life unless you always have a suitable power source. For example, Samsung Galaxy S6 can be fully charged over six times and an iPhone 6 even ten times. The output power of this model is a strong 5.5 amperes, which is distributed over a total of three USB ports, which you can use in parallel to charge three devices simultaneously.

Of particular interest in the RAVPower 26,800 mAh power bank is the iSmart technology, which is used exclusively in this model under this name. The power bank automatically detects the optimal charge level of the connected devices and adjusts them accordingly. This guarantees the fastest and most efficient charging possible of your smartphones and other electrical devices that are connected with to the portable charger.

Doesn’t that much output damage my smartphone?

No, neither your smartphone nor other devices that you connect will be damaged by this power bank. The integrated control and the protective functions of the devices ensure that only as much current flows as is good for the device.

Is this power bank waterproof?

No, even if the Powerbank looks robust, it is by no means waterproof and should therefore be protected from moisture.

How much does the RAVPower Powerbank weigh?

The power bank weighs an impressive 456 grams, but you have to see this in relation to the high capacity. If you need a small device for your pocket, you should choose a different model.

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All You Need To Know About Power Banks

The Capacity of a Power Bank

Many consumers ask themselves before buying what capacity the battery of the power bank should have when it comes to charging certain devices. Basically, the simple 1 × 1 is not to be used here. For example, if your cell phone’s battery has 2,000 mAh, you cannot charge it five times if you have a power bank with a capacity of 10,000 mAh (5 x 2,000 mAh = 10,000 mAh).

In this example, it is more the case that the smartphone can only be charged three to three and a half times with such a power bank. This is primarily due to the fact that the power bank’s battery loses energy in the form of heat during the charging process, which can then no longer be passed on to the connected devices. A basic distinction must therefore be made in terms of capacity and available energy.

You have surely already noticed that after using a smartphone you will notice a drop in performance in terms of battery for a longer period of time. This is related to the age or use of the battery. The capacity of the built-in batteries will decrease over time. This also reduces the energy that can be stored in the batteries in relation to the power bank and passed on to connected devices.

4 Mistakes to Avoid When Charging a Power Bank

Basically, power banks are not dangerous if you pay attention to the correct operation. However, there are some sources of error that you shouldn’t neglect. We have explained four errors, which not only apply to power banks themselves, but also to all other electronic devices that have an internal battery, such as smartphones, notebooks or tablet computers.

1. Avoid Extreme Temperatures

High temperature fluctuations are one of the biggest reasons why batteries can be defective or not as powerful as before. This affects both cold and heat. Make sure that you do not leave your power bank in the blazing sun and do not use it in strong freezing temperatures without protection. Otherwise it may be the case that the battery of the power bank is damaged and can no longer be used as usual.

2. Switch off the Power Bank after Charging

Fortunately, you do not need to follow this tip for the portable chargers explained in this article because they have appropriate protective functions, but it is important if you have a no-name device from overseas.

If the charging process of the battery of the power bank is done, please switch off the device. The power bank should not continue to be supplied with electricity, as this can lead to damage, such as overheating.

With Power Banks without any charging protection and particularly cheap power banks from the Far East, you need to make ensure to unplug it as soon as it is fully charged.

3. Do not use USB devices if the Power Bank is getting too hot

If you think that that the power bank is unusually hot, it may indicate an internal defect. For safety reasons, it is therefore advisable that you stop any charging and replace the device or send it to the manufacturer as defective. Corresponding damage often occurs even after the power bank has been improperly treated.

4. Check your Power Bank for any damage after a drop

If the power bank falls on the floor, it can lead to damage. Under no circumstances should lithium-ion batteries with external damage be used. It is recommended to use a special bag to optimally protect the power bank. Some manufacturers use systems that go with it, so that the internal battery can be given maximum protection in the event of a fall.

General information on Choosing a Power Bank

If you are just wondering which power bank makes the most sense for you, you should pay particular attention to branded products and customer testimonials that are available to you, for example, in the Amazon online shop. You can determine what the experiences of the consumer are in practice over a longer period of time. The majority of the power banks presented above are good branded devices from well-known manufacturers that have proven themselves on the market for years.

Proper handling also plays an important role. To do this, you should pay attention to the sources of error described above and use the battery gently.You can then have maximum enjoyment from your power bank over a very long period of time and can use it to supply all electronic devices of your choice with energy on the go.

Using Power Banks Outdoors - What Should You Consider?

If you buy a power bank, you usually want to use it on the go or outdoors, where there are no sockets. In order to ensure a long lifespan for the power bank, the following three points should be considered when using it outdoors:

1. No Extreme Temperatures

It is best not to expose your power bank to extreme temperatures, as this will damage the battery and its capacity in the long term. If it is very cold outside, it is best to carry the power bank with you in your pocket. In addition, like all technical devices, power banks must not be left in the blazing sun. Find a spot in the shade for your power bank in summer, it will thank you!

2. Watch Out for the Rain

Very few power banks like rain or even falling into a lake. Therefore, you should always protect your power bank, just like your smartphone, from moisture.

3. Watch out what else you have in your pocket

Although many power banks come with sleeves or bags and can be purchased separately, they are actually not necessary in everyday life. Power banks are sturdy enough to be carried in your trouser or pocket or in your backpack.

However, you should pay attention to what else you have in your pocket. Pointy and sharp objects, magnets, stones, pieces of metal and the like can damage your power bank. As a rule of thumb, do not carry anything in your pocket with the power bank that you would not carry in a pocket with your smartphone.

Power Banks in Airplanes - What to consider?

Have you just booked a vacation and maybe read that power banks are not allowed on the plane? 

Basically, there are no general rules regarding the carrying of a power bank in aircraft. There are guidelines from the airline organizations, but in practice these are not implemented by all airlines. They only represent information that the airlines generally do not follow.

To determine whether your power bank is below the maximum limit of 100 watt hours, you need to do a simple conversion. Simply multiply the capacity of the battery in the power bank in mAh x the voltage in volts. You must then divide the result by 1,000 to get the watt-hours as a results. To do this, you can use the example calculation shown here:

10,000 mAh x 5 volts / 1,000 = 50 watt hours – You might be allowed to carry the portable charger on the airplane.

4.7/5 - (108 votes)

Last product update on 2022-09-29 | Source: Amazon Affiliate