Anker Powercore 20100 Power Bank Review

4.6 stars

Massive-capacity sleek and slim Power bank with fast charging and a very reasonable price.

What We Like

  • True 20,100 mAH battery capacity
  • Slim, narrow and long design
  • Solid build quality with double-layer inner metal & outer polycarbonate shell
  • Matte undertstated finish with curvy sides
  • 2 Fast charging 2.4 Amp Ports (maximum charging speed supported on iPhone 7, 7+, 6 etc.)
  • Very low weight for capacity > 12.6 oz or about a soft-drink can
  • Reasonable Price

What We Do Not Like

  • It takes about about 10+ hours to recharge this powerbank using a 2 Amp fast charger. However, the newer Quickcharge version can be recharged in 4.5 hours.

(Note: Anker offers a total of five Powercore brand 20000 mAh powerbanks currently!!  Refer table at the bottom of this article for features of each.)

Update: The latest version – PowerCore Speed 20000 with QC 3.0 –  comes with QuickCharge 3.0 (both Input and Output). The old  version is still available if you do not have a QC 3.0 compatible phone (such as iPhones) and want to save some money.  The newer version Anker PowerCore Speed 20000 QC    can be charged in just 4.5 hours with a QuickCharge  3.0 Wall Charger.

Anker powercore 20100 is one of the best high capacity power banks
Anker Powercore 20100 balances sleek design with high performance and build quality

Anker PowerCore 20100 is Anker’s latest 20100 mAH capacity equivalent USB power bank available in the market. This excellent power bank has a long, narrow and slim design that makes it very pocketable and portable.

20,100 mAH is some serious battery capacity but the low weight (about 12 oz)  of this mobile USB power bank makes it perfectly suited for your backpack, handbag or carry-on luggage.

Standard fast charging 2 Amp wall charger will charge Anker PowerCore 20100 overnight (about 10 hours). Regular 1Amp USB charger will charge it in about 20 hours.

PowerCore vs PowerCore Speed QC vs PowerCore+ 20100 USB-C

PowerCore 20000 Speed QC  (Shown on the left) is the latest version with both Quickcharge Input & Output . It gets charged in about 4.5 hrs using a Quickcharge 3.0 wall charger and charges your Quickcharge compatible smartphones to 80% in just 30 minutes. It has the exact same slim and long stylish design of the PowerCore 20000 including two USB ports (one Quickcharge port & one 2.4 Amp USB).

Here is a complete list of all QuickCharge compatible smartphones/tablets.

Anker PowerCore+ 20100 USB-C – (Shown on the left)  is the version with one USB-C port and and two USB charging ports instead of the two ports in this version. The Anker PowerCore+ 20100 USB-C  is priced higher than this version and the one extra port is an USB-Type C port which can charge/run latest 2015+ Macbooks as well as many modern ultrabooks and chromebooks .

Anker PowerCore 20100  is the plain vanilla version with no Quickcharge and costs the lowest. It is  an excellent choice if you have iPhones (iPhones do not support Quickcharge) as it charges iPhones at maximum possible 2.4 Amp charging current.

Design and Packaging

Anker powercore 20100 review
Powercore 20100 has a narrow and slim design making it very pocketable

Anker PowerCore 20100 battery bank has to be one of the best looking high capacity power banks in the market. It comes in two matte colors – black and a very cool looking white – with four blue LED indicators.

The matte finish ensures that the outer surface remains fingerprint free and looks subtly beautiful as well.

This powerbank has a dual layer design. The inner metal shell provides protection and ruggedness while the outer polycarbonate layer ensures a smooth outer surface that does not scratch other items in your bag.

anker external battery pack
The sleek and curved surface of the Anker 20100 mobile power bank with outer polycarbonate shell is easy on hands

USB battery bank performance

True to Anker’s reputation, the Anker PowerCore 20100 battery bank also offers true 20,000 mAH capacity which means that you can charge most smartphones about 5-6 times with this powerbank.

The powerbank uses very high quality 6 Panasonic 18650 3400 mAH NCR18650B batteries which are one of the highest quality batteries available in the market.  The high qualities batteries are reassuring and promise long life and safety.

iPhone 6 – 6 times

Samsung Galaxy S6 – 4 times

iPad Mini – 2 times

Please note that Anker also sells a similar looking Powercore+ 20100 USB-C powerbank which offers 1 additional USB-C type ports besides the regular USB ports of this powerbank and cost much much more.

Two Fast Charging ports

anker 20000 mah power bank review
The white version looks elegant with its matte finish that resists fingerprints

Anker PowerCore 20100 USB battery bank comes with two 2.4 amp fast charging ports. 2.4 amp is the fastest charging ports that you will currently get in the market and with both ports delivering 2.4 amp current, you do not have to worry about remembering the fast charging port.

Latest Update: Anker now offers a version of PowerCore 20000 with QC 3.0 –  for superquick charging. The new version can charge compatible devices up to 80% in just half an hour. It also gets fully charged using a QuickCharge  3.0 Wall Charger in just 3.5 hours. Here is a complete list of QuickCharge compatible smartphones/tablets. 

Please note that iPhones do not support quickcharge but instead support 2.4 amp fast charging supported by Anker PowerCore 20100.

All standard safety protections

Anker PowerCore 20100 external battery bank comes with 10 safety protections ranging from surge protection and over voltage protection to  temperature control and output current limiting cut-off. While most of these are available in all quality external battery banks, one feature that we will like to mention here is the Voltage Boost feature.

Voltage Boost feature

Anker claims that the voltage boost feature senses the resistance of the cable and increase current accordingly. This feature is important when you are charging your device using long cables as such cables have high resistance that wastes current and leads to slower charging.

While we always recommend users to use shorter and high quality cables as they make your powerbank charge last longer and charge your device  faster, Anker Voltage Boost feature atleast takes care of one of these issues by increasing current to charge your device faster. However, please note that as increased current will drain your power bank faster too, the best option is still to use a high quality and very short cable to extract maximum power from your power bank and reduce wastage of stored power.

PowerCore 20000      PowerCore 20000         PowerCore 20000
without  Quickcharge  with Quickcharge            with USB-C
(Best for iPhones)         Input/Output

Features PowerCore+ 20100 USB-C PowerCore II 20000 PowerCore Speed 20000 PowerCore Elite 20000 PowerCore 20100
USB-C Port
QuickCharge 3.0 Output
QuickCharge 3.0 Input
Number of Ports 3 (2 USB and 1 USB-C) 2 2 3 2
Special Features Has USB-C input/output for rapid charge recharge Latest release
QC 3.0 input/output support
Gets charged in 5 hrs
QC 3.0 Input & Output,
Gets charged in 5 hrs
(New release) Three heavy duty 3 Amp max ports, 6 Amp total max output at a time. Dual input to charge powerbank in just 6 hrs. Slimmest and lightest plain vanilla model

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