8 best phone portable chargers [2021 Guide]

Madalina Dinita
by Madalina Dinita
Madalina has been a Windows fan ever since she got her hands on her first Windows XP computer. She is interested in all things technology, especially emerging technologies -- AI and DNA computing in... Read more
Affiliate Disclosure
best portable phone chargers

Battery life doesn’t constitute a strong point for Windows phones. Gone are the days when your phone’s battery was able to power you for days on end.

Modern phones feature big displays and run tens of apps at the same time, and all these elements literally drain battery life.

Indeed, somehow this is the price we pay for using top-notch phones. However, it appears that some phone models have serious difficulties in powering users throughout the day and could use a helping hand.

Unfortunately, the latest Windows phone models are notorious for their battery and overheating issues, and some of them have been plagued by these problems since the day Microsoft launched them.

One solution to extend your phone’s battery life is to use one of these battery-saving apps. In case you extensively use your Windows phone, you should also keep a portable charger within reach and use it when your phone’s battery reaches critically low levels.


Which would be a long-lasting portable charger to buy today?

Anker PowerCore 10000

  • 10,000mAh
  • Small and lightweight (3.6 x 2.3 x 0.9 in; 180g)
  • 46hrs of battery life
  • Users experience issues with fully recharging the product

Anker PowerCore 10000 is one of the smallest and lightest chargers in its power category (10,000mAh).

This power bank comes with a portable charger, a micro USB cable, travel pouch, and an 18-month warranty.

The default charger color is black, but for some extra bucks you can get a blue, white or red one.


RAVPower 32000mAh

  • 3 x iSmart 2.0 output ports
  • Smart LED power-level indicator
  • Designed to prevent overheating
  • Takes a long time to recharge

RAVpower 32000mAh is a robust power bank that can simultaneously charge 3 devices with 2.4A Max per port.

Battery life can last up to 11 days, and then it can take almost all day long to fully recharge.

It might not be the most discrete charger at 6.93 x 2.99 x 1.02 inches, but for sure it’s a powerful one.


Anker PowerCore Slim 10000

  • 18W of USB-C charging power
  • 18-month warranty
  • 5.89 x 2.70 x 0.57 inches
  • Few users have reported problems with the connector port

Yet another Anker charger, just as thin and compact as the first option.

The device conveniently supports most USB-C smartphones, or tablets and the charging speed is superfast.

As per users’ testimonials, it can stand 4x iPhone full charges on one battery cycle (just as it’s advertised) and will fully recharge back in about 4 1/2 hours.

Together with the PowerCore Slim 10000 you will also get an Anker Nano III wall plug and a USB-C to USB-C cable.


Ekrist Power Bank 25800mAh

  • Dual USB ports (2 1A+1A)
  • Safety LEDs
  • 45-days money-back guarantee
  • Fully recharging it seemed problematic for some users

With this power bank you can charge iPhones, iPads, iWatchs, AirPods, Samsung Galaxy smartphones and most other smartphones, tablets or Bluetooth devices.

In one cycle, the charger can refill a device up to 6 to 8 times. It will then take about 8 to 24hrs to recharge, depending on the wall power plug used.

iMuto 10000mAh 18W

  • Smart digital screen
  • Battery life for 8 charges
  • Recharges in about 4 hours with a PD 2. 0 adapter
  • Short life span

This portable charger is a real monster, it packs a 20000mAh capacity and yet can fit in the palm of your hand. You can always rely on this device to power your Windows phone, as it can charge it 8 times. If you’re planning to go on a trip in the middle of nowhere, you should also put the iMuto Portable Charger in your backpack.

The smart digital screen displays the remaining power in digital format. This feature is hidden by default until activated. Thanks to the built-in protection system, your devices are safe from over-charging, over-voltage, over-current, and short circuit. The charger also comes with a travel waterproof pouch.

The device is compatible with the following Windows phones: Lumia 435, 635, 550, 640/640XL, 650/650, Lumia 735, 830, 950XL, and Lumia 1520.


Acuvar 2600mAh Portable Charger

This portable charger connects to your Windows phone through a USB cable, extending its battery life. You can easily slip it into your pocket thanks to its tiny size: 4 x 1 x 1 inch. The charger’s case is made of soft-touch plastic, and the built-in flashlight could come in handy if case you go on a hiking trip.

The Acuvar portable charger can power your phone for 4 to 6 hours. It’s compatible with the following Windows phones: Lumia 920, Lumia 820, 808 PureView, Lumia 900, Lumia 810, Lumia 822, Lumia 521 and 520.

Check it now on Amazon


VicTec 7000mAh

This charger is a combination of Qi wireless charger and portable power bank with dual USB output. It is slim and compact, and you can easily carry it in your pocket. With a high capacity of 7000mAh, it will quickly revive your Windows phone battery.

You can plug in the VicTec portable charger, and charge your phone while the device itself is still charging – this is how powerful this charger is. You can charge two Windows phones at the same time: one wirelessly, and one on the USB port.

The charger supports the following Windows phones:  Lumia 1520, 1020, 929, 928, 920, 830, and 820.

Check it now on Amazon


CHOETECH 10400mAH

This device is a heavy-duty charger than can power your Windows phone for several days. It supports two types of ports: standard USB and USB-C ports, convenient especially for Lumia 950 and Lumia 950 XL owners. Thanks to the dedicated quick charge ports, it can charge your Windows phone up to 75% faster.

Some users complained that this charger is heavier than most chargers, but don’t expect this device to be light as a feather – after all, it packs a 10400mAh capacity that needs to be stored somewhere.

Get it now on Amazon

As you can see, we listed various portable chargers in this article. If you don’t plan to use the charger very often and you’re looking for a cheap device, we recommend you buy one with less power.

If you’re looking for a heavy-duty charger, then go for the ones boasting 10000mAh or higher.

After all, the perfect Windows phone portable charger is the one that best suits your needs.



Frequently Asked Questions

  • Depending on what you’re planning to use it for – smartphone, tablets etc. – the power bank you pick should have an output voltage higher than that of your device.

  • A 50000mAh power bank is extremely powerful and will surely last for repeated charges. However, such robust devices also take longer to recharge.

  • The smaller a power bank is, the faster it empties. Take a look at these chargers of all sizes so you can get an idea.

This article covers:Topics: