Best External Battery

Best External Battery

External battery is a small, minimalist device that contains an additional power source. You can always load it on you when needed.

When external battery is not born, Our modern appliances are greedy electricity. Now,The external battery can use for our smartphones, GPS(Recommend reading about pet gps tracker), electronic cigarettes, connected watches and other transportables.

Which users should understand our best external battery guide?

We will classify them based on their total output power. It is also recommended to use an external battery that can charge multiple devices at the same time.

But beware, Not only these. As it is important to select the best external battery in terms of capacity, ergonomics and robustness. It must corresponds perfectly to your needs. We decide to provide you with this comparison and buying guide at Bestlife4us.

The engineer will explain the technology that governs best external battery. Our expert teach you to read the data sheet of an external battery. But before that, we have identified the 6 best external batteries available on the market.The classification of external batteries also includes solar rechargeable batteries. For more information on solar cells, please read this article about Best Solar Charger Buying Guide.

Top 10 External Battery

NamePowerNumber of Usb PortsPrice
1.Poweradd Pilot 2GS External Battery10000 mAh2Check Info
2.iMuto External Battery10000 mAh2Check Info
3.RAVPower External Battery22000 mAh3Check Info
4.Poweradd Slim2 External Battery5000 mAh1Check Info
5.Anker PowerCore External Battery20100 mAh1/2 according to the modelCheck Info
6.EC Technology External Battery22400 mAh3Check Info
7.Soluser External Battery24000 mAh3Check Info
8.AUKEY External Battery20000 mAh2Check Info
9.KAPPET External Battery20000 mAhWireless ChargerCheck Info
10.Hokonui External Battery20000 mAh3Check Info

1.Poweradd Pilot 2GS 10000mAh – The Cheap External Battery For Your Cell Phones

external laptop battery

Poweradd Pilot 2GS External Battery
The race for the miniaturization of external batteries knows no respite. This is because the compactness of the device is one of the major criteria for selection. A small external battery with great autonomy is simply more valuable than its competitors. That’s why this small business model is easily raised to the top of our comparison.

Design, size and weight

Even if this external battery is not the most efficient in terms of autonomy or charging speed. It shines with its small price and its very small size.

With a size of 13.7 × 7.3 × 1.27 and weighing only 250 grams. It is doing very well ! Because even if it is a little bigger than some other models, it has many options and benefits.

We particularly appreciated the quality of the materials used. It consists of only three parts. The feature that guarantees compactness, but also the durability of the device. The central part is entirely made of aluminum, a material known for its solidity and the comfort of its grip.


The first thing is the presence of two USB outputs, which allows to load two devices at a time. There is also a micro-USB input for charging the external battery itself. For this price, you will see it. It is quite impressive to have two load order to control consumption, it has four LEDs indicate the remaining battery life.


The capacity of this external battery is 10,000mAh. However, the use of a Lithium Polymer battery has a conversion rate a little lower than the li-ion. Therefore, The actual capacity is about 7,000mAh.

This is a very good value for this price: you will be able to charge most smartphones 2 or 3 times. The iPhone 6 for example, has a capacity of 1.810mAh. This external battery can therefore charge an iPhone 6 almost four times.

As for the charging speed, the balance sheet is less brilliant. Indeed, the battery has 2.1 amps. If you use a single USB port, this is the standard charging speed for most smartphones that do not have Quick-Charge. But if we use both USB ports, we are limited to one amp per device. which divides the charging speed by two.


For a very competitive price, this external battery is excellent for troubleshooting. Its solid aluminum construction and the presence of two load ports is an asset when needed, although its limitation in terms of amperage must be kept in mind.

What we like
  • Solid construction
  • Power: 10000 mAh
  • Very good autonomy
What we regret
  • Limited amperage for double-charging

2.iMuto – The Best External Battery 10000mah

external phone battery

iMuto External Battery
The 10,000mAh of iMuto takes the elements that made the success of most good external batteries. In its classic appearance, it hides very good performance, and undeniable assets.

Design, size and weight

Indeed, it measures 5.6 x 0.6 x 2.8 inches , slightly smaller than its competitor in first place. For a total weight of 8.5 ounces. For a very advantageous price, with a size comparable to that of the Poweradd.

The construction is mainly made of aluminum, which is a real asset in terms of durability. This material, which conducts very little heat. That also allows to act as thermal insulation and thus limit the heating of the device during charging.


The features are quite similar to Poweradd. It has two USB outputs, as well as a micro-USB input. The ability to charge two devices at once is a real plus.

A small power button controls the battery level, indicated by digital while charging.


With a native capacity of 10,000mAh, this battery is off to a good start. The conversion rate is optimal if only one of the two USB ports is used. It reaches 74% or 7.400mAh actually sent to your phone.

Therefore, It is able to fully charge an iPad mini 1 and load a Samsung Galaxy S7 twice. However, if you plug two devices at the same time, you lose about 1500mAh of autonomy. The actual capacity of the battery drops to less than 6000mAh.

The charging speed is also very advantageous thanks to 3.4 amperes spread over the two USB ports. This means that unlike the Poweradd, it has 1.7 amperes per USB output. However, it remains below the 2.1 amp / device that are recommended for the ideal charge of a phone or an electronic cigarette.


The storage capacity differs a little too much from the displayed value when connecting two devices. But the effort that is put in the amperage allows a good charging speed, even when this external battery powers two phones. An impressive result for such a compact model, which allows him to win the second place of our ranking!

What we like
  • Solid construction
  • Correct amperage
  • Double USB charge
What we regret
  • Conversion too weak when connecting two devices

3.RAVPower 22000mAh – A Powerbank Full Of Features

best external battery

RAVPower External Battery
When we exceed 10,000mAh, we expect of course that it is less compact. But it is better in passing that it has interesting features. Of course, this battery is powerful. its price is attractive. but it is this last point which allowed him to make a place in our comparison.

Design, size and weight

Strangely, This external battery has a powerful capacity and a portable size. Because if it measures only 16.5x7x2.3cm – a significant performance – it weighs no less than 400 grams.

Although it carries more than twice the capacity. But it can be seen that it measures only a few centimeters more than its competitors. However, it weighs much more heavily.It can power many large devices, including digital cameras.If you are a vlog bloger, please read this article about best vlogging camera for more information.

The manufacturer’s performance can be explained by a fairly smart placement of ports and diodes in terms of size. Where most strive to implement everything on a slice only. this external battery is more like a USB hub. At the bottom, there are no less than 3 USB charging ports. But the diodes that indicate the level of charge are on the front of the battery. The micro-USB input, it is discreetly on the side.

Regarding the materials used, we deplore the lack of metal. All parts are plastic, which gives a general impression of fragility.


As we said, it has three USB charging ports. We will see, its ambitions in terms of technical characteristics!

The RAVPower external battery is also equipped with several security sensors. Comparable to those of Anker, known in the industry. They can control the temperature, the load limit and detect the circuit-courses.


Its native capacity is 22000mAh. But its actual capacity is 18000mAh. The conversion rate is very advantageous! The amperage of this external battery reaches 5.8. If we do the math, it’s a very good score when connecting two devices. Each device has 2.4A, which corresponds to the fast-charge of some phones. The third port only has 1A. It will be reserved for devices whose load is not very greedy. As the first connected watches for example.

If you do not have devices equipped with Quick Charge, it’s much simpler. For example, you can charge three phones at just under 2A. But the mAh value of 18000 can charge an Iphone 6 almost 10 times. A Samsung Galaxy S7 6 times. Not bad at all !


This external battery provides sufficient amperage for the Quick Charge on a port. It has a very large capacity. The additional features, especially it’s admirable in terms of security. But if it easily deserves the 3 place in this ranking. There are some flaws, including its weight and appearance too plastic.

What we like
  • Little price
  • 22000 mAh
  • Fast recharge
What we regret
  • Quite heavy

4.Poweradd  Slim 2 External Battery – The Best Compact, Shockproof And Economical Model

iphone external battery

Poweradd External Battery
All major brands of external batteries have their mini model. We do not all need to connect multiple devices. Some people are looking for the external batteries of low-energy phones or electronic cigarettes. In this area, we select Poweradd . And for good reason: it costs less than 15 $. That offers one of the best conversion rates.

Design, size and weight

Now, this is a mini format that we will deal with. The cylindrical design can be surprising. Because it is not common. Most builders prefer a rectangular shape to fit better in the pocket.

However,The advantage of a cylindrical format is that it holds better remains compact in the hand. This battery has a circumference a little too high to slip comfortably in the pocket. We would have probably preferred a flat or rectangular shape.

The Slim 2 from Poweradd measures less than 10cm long and 3.3 wide. The weight, it barely exceeds 100 grams. As you can see, going from 10,000mAh to 5,000 may be a good plan if storage capacity is not the main interest.

As for the materials used, there is no surprise. For this price, all parts are plastic. On the other hand, one must note a major advantage of the cylindrical format: it allows the battery to better hold the duration. As the set is very compact and does not have vulnerable parts (like the corners for a rectangular format). You can be less worried in case of shock or fall.


It’s a minimalist model: it only offers a single USB charging interface and a micro-USB input port. The four diodes that indicate the level of charge are also on this lower edge.


If you only want to charge one device, it is better to prefer external batteries that only have one USB port. Indeed, the amperage is better used. This is also the case of the Poweradd, which offers an ideal load thanks to its 2.1 amps. It does not support the Quick Charge, which often runs around 2.5A.

Its actual capacity is 3,700mAh, which is enough to charge an iPhone 6 twice. That ensure the full charge of a Samsung Galaxy.


If you do not rely on it to charge more than one device, this external battery is an excellent choice for occasional use .Even if we would have preferred a slightly more compact design.But its very low price makes it an ideal companion everyday.

What we like
  • All, very small price
  • Comfortable amperage
  • Solid overall
What we regret
  • Small cylindrical format

5.Anker  20100 mAh – Super Fast External Battery

anker external battery

Anker External Battery
We come to talk about Anker, one of the leaders in connectivity in the world. This is one of the best external batteries available on the market.

Design, size and weight

Few external batteries manage to offer optimal ergonomics when held in the hand. And yet Anker’s choice of cylindrical and rectangular shape is excellent. Its size allows it to be stable at the same time when it is laid flat. To curl comfortably in the hand, and to be slipped in a pocket. Unlike the iMuto design for example, much flatter. It gives more a sense of strength. The choice to focus on thickness rather than width.That makes it a more compact looking device.

Its size is rather standard, with a length of 6.7, a width of about 2.4 and a thickness of 0.9 inch. The weight, it is surprising: more than 11.4 ounces on the scale. It’s not nothing! It remains lower than comparable batteries, such as RAVPower. With a capacity barely lower.

Portability is not the priority of this model, which shines above all by its power and the quality of its construction. Like many Anker batteries, it relies on the density of the elements that compose it for impact resistance. On the other hand, the materials used are essentially plastic. It’s a shame, for a battery of this category. It is better not to multiply falls on hard floors.

This external battery strength USB ports is the one of the positive elements. There is nothing more irritating than a port that comes loose, moves or has a poor hold on the cable after a few months of use. Anker ports have stronger ties: it takes a little more effort to connect. But it does not come off easily.


Two USB ports and a micro-USB input: for 20,100mAh, it’s an excellent compromise. We will see in the next section if the Anker external battery performs well. But these characteristics are promising.

On the top of the battery, LEDs indicate the charge level. The single button, located on the right edge, allows to check the battery life.

Several security features are included in this unit. Charging stops automatically when it reaches 100%, preventing common overheating and battery damage on poor quality models.


Unlike large-capacity competitors, who rely on triple-USB. Anker is committed to providing an efficient and ideal load. 4.8A means that each device connected has 2.4A. It’s the standard speed for the fastest charge possible.

The distribution of amps on both ports allows to load two iPads at the same time! We prefer a modest battery that only offers two charging ports, but makes them as efficient as possible.

As for the conversion rate, the difference between the displayed capacity and the one that will actually be sent to your phone. the results are a little more mixed. This is actually 14,874mAh available. It is considerable, but it is below what we could expect. We can charge an iPhone 6 eight times, and an iPad Air one and a half times.


Two ports at 2.4A is a success. The guarantee of a timeless external battery and really useful. If we add a generous mAh value despite the conversion rate a bit low, an innovative design that focuses on comfort and reliability. It is an external battery that will not disappoint you.

What we like
  • Comfortable amperage
  • Two ports at 2.4mAh
  • Smart and comfortable format
What we regret
  • 14.874mAh real capacity

6.EC Technology

best external battery charger

EC Technology External Battery
This is one of Amazon’s best-selling portable battery chargers, with three USB outputs and fast charging technology. EC Technology is probably one of the best all-round mobile power supplies you can buy now. Although I don’t recommend it for large-scale travel abroad, this has nothing to do with the brand of the watch that has expired.

However, This portable charger features 2.1A output (ie fast charging) and sliding and rocking design, which can be viewed in the package. The remaining battery power. Because of its curved edge design. The smooth metal surface and streamlined practicality make this charger one of my recommended daily carrying items.

What we like
  • High capacity
  • Fast charging
What we regret
  • Still very heavy

7.Soluser Ultra 

best external battery pack

Soluser External Battery
We like this little guy. Mobile power may be the most portable option on this list, allowing you to have your phone fully charged at least twice in the back pocket.

The thickness is only 209g and 1.5cm, you can carry it with you. The Bluetooth function of this charger is a bit confusing. No stress, and 10,000mAh of extra power for any of your devices. In addition, it comes with BERNET’s own fast charging technology, which means you won’t be plugging it in for a long time. You can monitor battery life through the app, but it only consumes more battery power.

Like many chargers on this list, it’s waterproof and sturdy, and even has external lighting to make it visible on the road. It doesn’t have a cable, so you need to carry your own stuff with you.

What we like
  • Slim design
  • Very portable
What we regret
  • There is no cable in the box

8.AUKEY 2.1A USB – The Best External Battery of 2019

macbook pro external battery

AUKEY External Battery
Aukey’s portable battery that is intended for Iphone, Androids devices, as well as all devices with a USB port. This universal external battery with dual inputs that will entice you to choose it.

This low-cost external battery is supplied with a micro-usb cable, which will charge and charge other devices. It is also compatible with Lightning cables (Apple), which allows you to use this same cable for both your phone to charge the battery and charge your iPhone faster.

It uses the AiPower system, which thanks to its charge in 2.4 A. That guarantees each of your devices the optimal maximum recharge rate. No risk of overheating, as the unit is equipped with built-in safety devices.

As it is light (430g) and compact (15 x 8.3 x 2 cm), you will have no trouble taking it everywhere with you. Thus, you will always have it at hand to charge your iphone, tablet, MP3 or a wireless headset. It has a charging capacity of 20,000 mAh, which allows you to fully charge a conventional smartphone 5 to 6 times. If we take the example of an S7, the battery can be charged 5 times.

Its double entrance is a greatest quality. By providing you with two cables, you can charge two devices simultaneously and quickly. Heavy users of digital devices will be satisfied. No more battery failures with this external battery.

That you won’t have to worry about any power outages!

Among the small significant features, we noted the presence of integrated LED indicators. When you are looking to charge a device in the dark, a system for the automatic extinction of the external battery when you do not use it.

It is true that it is a little long to fully recharge (between 8 and 10 hours). But once the charging is complete, its battery life is long enough. Especially, when you consider the value of this Aukey external battery, it’s hard to be picky!

This powerful external battery is perfect for business trips. In special cases, You can charge 2 devices at the same time and travel peacefully.

What we like
  • Dual inputs for simultaneous charging of 2 devices!
  • Power of 20,000 mAH allowing more than 5 full charges of the latest smartphone models
  • ncredible price / quality ratio
What we regret
  • Battery recharge time a little long

9.KAPPET Portable

samsung external battery charger

KAPPET External Battery
This KAPPET is sturdy and full of beans. Don’t you hate it when you have to pull the cord to the side of the battery? Become a hero and charge every device in the entire dorm. So you don’t need to use a power cord.

Unfortunately, this means that the latest Android phones that are charged via USB-C will not be available for any use from Bolt. This is not so crazy for the price. This is an extreme portable battery charging option. But it has a decent battery, which is good for charging one or two full smartphones, depending on your device. The edge of actual portability, so I suspect that I have used this beast, but I am happy to know that it is there.

What we like
  • Not so flashy
  • Cables not included are convenient
What we regret
  • Pocket charger is a bit big

10.Hokonui Black

universal external battery charger

Hokonui External Battery
But it makes up for it in terms of portability, durability and direct style. If you need a device that can charge your laptop and mobile phone, Hokonui’s portable charger is a good choice. This amazing versatile portable battery charger is the perfect emergency charging device for your next camping weekend. It has USB-C and normal USB output as well as AC output. Not all portable battery packs must look like discarded robot blocks. So you can plug in the laptop charger directly.

There is also a battery with a capacity of 20,100 mAh. It reaches the point where I almost expect my phone to keep up with this supercharged beast. This way you can squeeze your phone or tablet multiple times before you need to recharge it. If you only have an external battery pack to charge your phone, cut off the middleman and take a battery case.

What we like
  • AC output
  • Capacity is 20,100mAh
What we regret
  • Big design

How to choose an external battery?

There are all shapes, sizes and abilities. But in the world of mAh, amps and USB ports that are growing. It can be difficult to navigate. Which external battery is best for use? How to sort? We have decided to help you with this buying guide.

Understand a technical sheet

Several values are displayed on the data sheets of the external batteries. First and foremost, we must understand what we are talking about!

The capacity of a battery is the value milliampere / hour, noted mAh. It’s basically the amount of energy it can hold. At least, choose a battery can charge 2.5 times for yout device. The second reasons, It is to compensate for the conversion rate – which we will discuss later. Second is to continue to use your battery for several years, despite its decline – natural.

The second important value is the amperage. Attention, a larger amperage is not always the sign of a good quality battery. Check the amperage of the device, and make sure your battery can provide at least what it needs. The amperage will determine the speed at which your phone can be charged by an external battery. Small electronics need 1A. Smartphones, they require between 2.1A to 2.4A minimum to load faster.

The Quick Charge, supported by the Motorola Moto M, the Samsung Galaxy A7, the Nokia 6 and many others are calculated differently. Google’s smartphone, the Pixel of 2016, could support up to 3,33A . Qualcomm’s Quick-Charge technology uses 4A, while Apple’s requires only 2 …

It’s not the amperage you have to look at, but the voltage. We spare you the mathematical formulas that make it possible to determine it. The important thing to remember is that an external battery that does not explicitly mention “Quick-Charge” will not be able to provide this service.

It’s even more important to know that each brand has its share of labels and patents supposed to charge your phone faster. With few exceptions, these promises are essentially marketing.That do not reflect a real increase in performance. This brings us to the second question.

What are the really important features?

The market for external batteries is very saturated, which has pushed many manufacturers to stand out with labels more or less relevant. Our advice: Do not be seduced too easily. We need to look for features that really matter.

One of the most interesting options, it is the LED lamp sometimes included. An external battery is mainly used when traveling, contexts in which a lamp may be useful. It would be thought that such a feature would drain the battery. But the RAVPower model equipped with a lamp can operate it for more than 800 hours when fully charged. Not bad !

In second place, there are the indicator LEDs of the battery level. We have specified on each model, but this little extra is not always included. However, there is nothing more frustrating than thinking of its battery charged. All this to see it snap between your fingers at the worst moment!

Finally, it may be advantageous to keep an eye on the security features. It is important, that your external battery has an automatic shutdown of the load when it is complete. The first generations were not equipped. There was a risk of damaging the connected device as well as the external battery.

How to judge the durability of an external battery?

There are several ways to make sure that an external battery will not break at the first shock!

The first is the alloy of materials used for the hull. It is of course advisable to avoid plastic, except for a very attractive model – less than 10 $ – and compact. Aluminum is more expensive, but it is a safe bet in terms of durability.

The second is the shape of the battery. In an effort to compete, manufacturers have designed models increasingly fine and increasingly flat. However, They are more vulnerable since they are likely to be bent, or damaged at the corners. A slightly rounded design, like that of Anker or RAVPower are often stronger over time.

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