Best 2021 external batteries: which model to choose?

Make way for our buying guide to the best 2021 external batteries on the market! Our uses are changing. Every day we spend several hours using our smartphone. Sometimes to make phone calls, but above all to access the internet and our precious applications. Problem, the battery often does not last all day. However, you cannot always plug it in to recharge it. The solution is therefore to opt for an external battery. But how do you choose the right road battery? Discover our selection.

Anker Powercore Slim

Anker PowerCore Slim Battery

Anker is one of the most reputable external battery vendors in the market. This model is very light and does not take up much space which makes it really practical to use. He counts two ports: a micro USB and a USB-C. This allows you to charge your smartphone, your tablet. Its compact size and LEDs make it the ideal battery to take with you.

This model incorporates Anker’s exclusive PowerIQ and VoltageBoost technologies. They work together to provide the fastest possible charge to any device. The trickle-charging mode can also charge low-consumption devices, such as headphones.

  • Power advertised: 10,000 mAh
  • Selling price : From 25.99 euros on Amazon

Anker Powercore Essential

Anker PowerCore Essential

We continue our selection of the best 2021 external batteries with another model from Anker: the PowerCore Essential. This model offers a power of 20,000 mAh. Like the PowerCore Slim, it is very light and does not take up a lot of space. There are two USB ports that allow you to efficiently charge two devices at the same time, The USB-C port cannot charge other devices.

Its capacity of 20,000 mAh allows it, for example, to provide more than 5 charges for the iPhone XS, nearly 5 full charges for the Samsung Galaxy S10, more than 3.5 charges for the Huawei P30, and more than 2 charges for the iPad mini 5.

We also find on this model the same exclusive PowerIQ and VoltageBoost technologies from Anker also present on the model we previously presented. Also in the game and very practical, the trickle-charging mode also allows you to charge low-consumption devices, such as headphones.

  • Power advertised: 20,000 mAh
  • Selling price : From 25.99 euros on Amazon

Luvfun Power Bank

Luvfun external battery

If you do not want to be too encumbered by an external battery, which will also considerably weigh down your bag, this model – much more compact than the previous one – can still charge a smartphone three to four times, since its capacity is 10,000 mAh.

It can even charge two devices simultaneously, thanks to its two USB ports. And four LEDs let you know the remaining charge level at a glance.

  • Power advertised: 10,000 mAh
  • Selling price : From 14.99 euros on Amazon

RAVPower External Power Bank

Ravpower 22000 mAh battery

Another recognized manufacturer who offers quality models and therefore have certain guarantees. Three USB ports are on the program, one of which is Usb-c. Four LED lights let you know where your power bank is.

The manufacturer specifies that it is better to use the original charging cable of your device or the RAVPower MFi / Micro-USB cable, for the best possible performance. Thanks to its Type-C 5V / 3A port, the external battery can charge the new 15 ″ MacBook. Finally, this external battery is equipped with two iSmart outputs reaching 2.4A each (3.4A in total).

  • Power advertised: 22,000 mAh
  • Selling price : From 25.99 euros on Amazon

Xiaomi Mi Power Bank 3 Pro

Xiaomi Mi Power Bank 3 Pro

Very powerful, the Xiaomi Mi 20,000 mAh is one of the most complete batteries, and at the best value for money of this selection. It has 2 USB-A ports and 1 USB-C port. Capable of delivering up to 45W via its USB-C port and 18W via USB-A ports (and 15W used simultaneously).

It is ideal for recharging smartphones, tablets but also laptops quickly. For example, Xiaomi announces that its battery can recharge: 4.9 times a Samsung Galaxy S10, 6.3 times an Apple iPhone XS, 4.2 times a Xiaomi Redmi Note 7, 2.1 times an iPad Pro 11 inches, and 3.9 times a Nintendo Switch.

With its dimensions of 15.3 x 7.35 x 2.7 cm and its weight of 400 grams, it is not the most compact of the external batteries of our selection. An important element to take into account before making the purchase.

  • Power advertised: 20,000 mAh
  • Selling price : From 49.99 euros on Amazon

Power Bank Outxe

Power Bank Outxe

It is a model definitely designed for adventurers. Are you going to go camping and want to be able to stay in touch with civilization? So take the time to look at this model. IP67 certified (dust and water), it is also shock resistant and a little bonus, it includes a solar panel that will allow you to have a little extra for your recharges. Its built-in flashlight can last up to 50 hours and has 3 different modes. Two USB ports are available (Type C and micro USB).

  • Power advertised: 25,000 mAh
  • Selling price : From 68.99 euros on Amazon

Tecknet Power Bank

Technet battery

Particularly powerful and elegant, the external battery is equipped with 2 USB ports to connect several devices simultaneously. In short, an ideal accessory for your emergencies and your outings. The battery is equipped with several LED lights to let you know the remaining battery level and an automatic shut-off function. With advanced Power Delivery technology, it charges for about 2.5 hours with a PD18W charger.

  • Power advertised: 10,000 mAh
  • Selling price : 22.99 euros on Amazon

Aukey external battery

aukey battery

The brand Aukey offers one of the best quality / price ratios on the market. You can find very compact and powerful enough external batteries, up to 20,000 mAh. Our favorite is the 10,000 mAh model, available for less than € 20 on Amazon. Very light and very easily transportable, the battery is also sublimated by an elegant design. Built-in safety devices protect your devices against excessive current, overheating and overloading. A must !

  • Advertised power: 5000, 7000, 10 000 mAh
  • Sale price: less than 20 euros

And you which model do you use? Which one best suits your habits and needs? Let us know in the comments!

🤔What are the different types of external batteries?

There are two main types of external batteries. Shell batteries, which are intended for the use of a single device, usually a smartphone. They are positioned on the back of the latter and also acts as the name suggests as a protective shell. Their downside is that they can only be used on a specific device.

And there are the so-called classic external batteries. With one or more USB ports (Type-C, USB-A, micro USB) of rectangular or cylindrical shape with capacities ranging from 2,500 up to 50,000 mAh. Manufacturers do not pride themselves on charging speeds and some have even invented specific terms and technologies to praise the efficiency of their batteries.

Size, weight, but also charging frequency and power delivered by the battery you want to buy are the main things to consider before choosing an external battery. Thus, if you want to use it for occasional use, it is better to turn to models offering a lower capacity and therefore logically more compact and easy to transport.

On the contrary, if you are going on a trip and you intend to take your devices with you, a battery with a minimum capacity of 10,000 mAh with several USB ports is recommended. Regarding size and weight, it all depends on where you will be using your devices.

If you want a smaller footprint, you should logically turn to the most compact models. Some do not sacrifice their performance, and offer several USB ports as well as a decent charging capacity (this is the case of the Anker PowerCore Slim).

💰What budget for an external battery?

Entry-level models start at very affordable prices – between 15 and 30 euros. For batteries offering for example a waterproofing certification or a fast charging system, it takes between 35 and 70 euros. Other high-end models can reach 150 euros. A small investment which in any case will allow you to never be on the drums wherever you are.

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