To help you make up your mind, here is a comparison of the best external phone batteries -


The editorial staff of 20 Minutes did not participate in the production of this article.

No need to drag your phone extension with you all day, the solution is called the external phone battery.

Find our selection of the best external batteries to no longer be fooled.

All about external phone batteries

Overview of external phone batteries

The autonomy of a laptop is a real subject for all phone users throughout the day for various tasks.

It must be said that current smartphones are very large consumers of energy and despite highly qualified batteries, it is difficult not to have to charge them at least once a day.

External batteries have solved this recurring problem for many of us.

You just have to connect your phone via a cable to them and the phone is charged for new hours of use.

However, not all external batteries are created equal and offer more or less additional features.

To make the right choice, read on.

How to choose your external phone battery? 

Before you start looking for the best external phone batteries, you will need to define your needs, especially in terms of capacity.

This will mainly be done according to your smartphone and your budget.

To be sure that you can fully charge your device, you must choose a portable battery with more mAh than your mobile phone.

However, it should be kept in mind that all batteries have energy losses from the moment they are used and are plugged from one energy to another.

In summary, here is what you should refer to before your purchase.

Take a close look:

  • The speed of recharging conditioning the input and output flow to be adapted to your laptop;

  • The portability of the external accessory;

  • The number of recharges: is it possible to plug in several devices at the same time?

  • The price displayed.

The selection of the best external batteries for phones

BELKIN PowerBank Boost Charge: the classic and high-performance external phone battery

BELKIN PowerBank Boost Charge - DR phone external battery

This battery from the renowned Belkin brand is compatible with all smartphones including Iphone and Ipad.

Belkin announces a 35-hour battery life to charge any device with its own power cables.

Its rather light weight will allow you to carry it with you without inconvenience.

The pros and cons of the BELKIN PowerBank Boost Charge external phone battery: 

Most :

  • Good value for money ;

  • Space-saving;

  • Apple compatible.

The lessers :

  • No cable included.

Get the BELKIN PowerBank model

SAMSUNG Powerbank 10,000 mAh: an external battery for Samsung smartphones

External battery for phone SAMSUNG Powerbank 10 000 mAh - DR

This 10 000 mAh Samsung external battery allows fast charging of 1 or more devices wirelessly.

No need to bother carrying your charging cables, this special Samsung smartphone accessory will meet all battery needs and is offered with a 2-year warranty.

The pros and cons of the SAMSUNG Powerbank 10 000 mAh external phone battery: 

Most :

  • Power supply for several devices at the same time;

  • No cable;

  • LED indicator for charging status.

The lessers :

  • Only for Samsung.

Get the SAMSUNG model

POWERADD Slim2: an external battery for phones with mini size and price

POWERADD Slim2 external phone battery - DR

This type of battery is called a "lipstick stick," which speaks volumes about its portability.

In addition, you can even choose it in the color you prefer.

On the performance side, this battery at the mini price will not fully charge your smartphone, but will be able to give it a little boost so that it does not abandon you before the end of the day. 

The pros and cons of the POWERADD Slim2 external phone battery:

Most :

  • Mini price;

  • Its format;

  • Available in several colors.

The lessers :

  • Its reduced autonomy despite the announced capacity.

Get the POWERADD slim2 model

MINGJIA 30,000 mAh: an external phone battery for more security

External battery for MINGJIA phone 30,000 mAh - DR

With its 2 Android inputs and 2 Apple inputs, this lightweight battery is capable of charging several different devices at the same time.

Lots of protections are also included: overload, overheat, leakage and over discharge protection for optimal charging of all your devices.

In addition, the manufacturer displays a power conversion of around 90%.

The pros and cons of the MINGJIA 30,000 mAh external battery pack:

Most :

  • 4 USB ports;

  • Compatible with any device;

  • 30,000 mAh.

The lessers :

  • Very light.

Get the MINGJIA model

XIAOMI Mi Power Bank 3: an external phone battery with the added bonus of Xiaomi

External battery for phone XIAOMI Mi Power Bank 3 - DR

This battery is compatible for any Android electronic device and this is perfect for a battery that can restore 10% charge in just 10 minutes.

It takes about 4 full hours to fully charge a battery.

The pros and cons of the XIAOMI Mi Power Bank 3 phone external battery:

Most :

  • Good value for money ;

  • Its weight due to the plastic design;

  • Includes 2 USB-C and USB-A cables.

The lessers :

  • Type c / c cable not included.

Get the XIAOMI Mi model

CZS F5: a real external battery for waterproof phone

External battery for phone CZS F5 - DR

This battery is a new generation battery, because it is solar and in addition waterproof.

Real emergency accessory, these two USB ports can supply 2 devices at the same time with a power of 10,000 mAh.

It obtains many good points in addition to protecting the environment.

The pros and cons of the CZS F5 external battery pack:

Most :

  • Compatible with almost any Android and Apple device;

  • Convenient to carry;

  • Solar energy.

The lessers :

  • Very masculine design.

Get the CZS F5 model

SWISSANT Powerbank 20,000 mAh: an external battery for phones with extra chic

External battery for telephone SWISSANT Powerbank 20,000 mAh - DR

This battery is compatible for all devices and that is good because it weighs only 170g.

In addition, its power conversion is 90% which is often higher than many other products.

There is also a battery indicator in large display and high precision on the top making it easier to know where you are.

The pros and cons of the SWISSANT Powerbank 20,000 mAh external phone battery:

Most :

  • Its chic style;

  • Power of 20,000 mAh;

  • Very good price.

The lessers :

  • Does not provide the charging cable.

Get the SWISSANT model

2 in 1 Qi Wireless Charger: No wires and more simplicity for this external phone battery

External battery for phone 2 in 1 Qi Wireless charger - DR

Here is a battery with an induction charger allowing you not to connect a wire while benefiting from the same capacities.

This product is compatible with all devices which support Qi standard and can charge 2 devices at the same time through micro USB / USB-C input and another Qi.

In addition, it automatically detects the optimal charging speed depending on the devices.

Pros and Cons of the 2 in 1 Qi Wireless Charger Phone External Battery:

Most :

  • Android and Apple compatible;

  • LED indicators for charging status;

  • Wireless battery;

  • Guaranteed for 2 years.

The lessers :

  • Can discharge quite quickly depending on the smartphones used.

Get the 2in1 Qi Charger model

Dimensions, weight, connectors, capacities, price… The choice of an external phone battery will depend on many criteria.

Purchase guide

Smartphone deal: The Samsung Galaxy S21 from € 1 (+ € 8 / month) at Bouygues Telecom

Purchase guide

Good deal: The best Rakuten offers of the moment

Content offered by our expert tips, partners of 20 Minutes.

The editorial staff did not participate in its realization.

The prices mentioned in this article are indicative and are subject to change.

  • High tech, image and sound

  • Purchase guide

  • Good plan