If you have a 20000mAh power bank, it should allow you to keep your smartphone fully charged and ready to go for days without you needing to reach for a wall charger to charge your phone or the power bank. Here are our recommendations for some of the best portable chargers with a capacity of 20,000 mAh!

Note: With regards to the power banks that feature USB-C ports, do make sure that your device is compatible with that 20000mAh power bank first. 


iMuto X5-TC 16,750 mAh

20000mAh power bank

The iMuto X5-TC is a portable power bank with a capacity of 16,750 mAh. The device comes with two regular USB ports and a USB-C port, and you can charge your smartphones or tablets multiple times, and even fully charge the new Macbook once. A digital display shows you exactly how much charge is left on the power bank, and like every charger on this list, there are multiple protections in place from over-charging, over-voltage, over-current, and short circuit.

Key details:

  • Capacity: 16,750 mAh
  • Output: 2 x 5V/2.4A max, 1 x USB-C port 5V/3A
  • Dimensions: 129.5 x 79 x 20 mm, 295 grams
  • Current price: $29.74

Jackery ThunderX 20,100 mAh

The Jackery ThunderX comes with a huge capacity of 20,100 mAh. It features two USB ports to charge a couple of devices at the same time, and one of the ports supports Qualcomm Quick Charge 3.0. Looks aren’t usually a factor when considering power banks, but the ThunderX is a sleek looking charger, and it is also the cheapest portable power bank on this list.

Key details:

  • Capacity: 20,100 mAh
  • Output: 1 x USB port 5V/2.4A max, 1 x QC 3.0 port
  • Dimensions: 208.3 x 114.3 x 33 mm, 453 grams
  • Current price: $19.99

EasyAcc power bank 20,000 mAh

The EasyAcc external battery features a large 20,000 mAh capacity. What makes this 20000mAh power bank stand out is the fact it comes with four USB ports to charge multiple devices at the same time, with one of them supporting Qualcomm QuickCharge 3.0 fast. Another useful feature is that there are dual inputs available, including one with QC 3.0 support, and both can be utilized simultaneously to charge the battery pack faster than other similar devices. And for those who might find it useful, the EasyAcc power bank also comes with bright flashlight.

Key details:

  • Capacity: 20,000 mAh
  • Output: 3 x USB port 5V/3.1A, 1 x QC 3.0 port 5V~6V/3A , 6V~9V/2A, 9V~12V/1.5A
  • Dimensions: 167 x 81 x 22 mm, 410 grams
  • Current price: $39.99

RAVPower power bank 20,100 mAh

RAVPower is a trusted name when it comes to portable battery chargers, and this particular option features a large 20,100 mAh capacity. The 20000mAh power bank comes with three USB ports, including a USB-C port with 30W output to let you charge a MacBook and charge the Nintendo Switch while using it, as well as a regular USB port with support for Qualcomm Quick Charge 3.0.

Key details:

  • Capacity: 20,100 mAh
  • Output: 1 x USB port 5V/2.4A, 1 x USB-C port 5V/3A, 1 x QC 3.0 port 5V/2.4A , 6.5V~9V/1.5A, 9V~12V/1.2A
  • Dimensions: 173 x 81 x 22.1 mm, 381 grams
  • Current price: $49.99

Anker PowerCore+ 20,100 mAh

Anker is one of the most popular makers of portable battery chargers and power banks, with a variety of options available, ranging from slim ultra-portable ones to those like the PowerCore+. This 20000mAh power bank comes with an impressive capacity of 20,100 mAh, that should be enough to fully charge your smartphone or tablet multiple times. You get two USB ports that utilize PowerIQ technology, as well as a USB Type-C port that can be used to charge current generation smartphones, tablets, and even the new Macbook.

Key details:

  • Capacity: 20,100 mAh
  • Output: 2 x PowerIQ ports 5V/3A max (2.4 A per port), 1 x USB-C port 5V/3A
  • Dimensions: 182.9 x 61 x 22.9 mm, 454 grams
  • Current price: $53.99

So, there you have it for this roundup of some of the best portable chargers and power banks with capacities around 20,000 mAh that are currently available!

Ankit Banerjee
My primary profession lies in the Network Design Engineering field. I have always been passionate about the latest trends in mobile communication advances around the world.