Anker Powercore 20100 Power Bank Review

PowerBank Guide is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

4.5 stars

Anker PowerCore 20100 is a large-capacity sleek and slim power bank with fast charging and a very reasonable price

Anker PowerCore 20100 What We Like

  • Lightest and most compact high-quality 20000 mah portable charger in the market
  • True 20,100 mAH battery capacity
  • Can charge most Android Phones and iPhones from 0 to 50% in about 40 to 50 minutes
  • 2 fast charging 2.4 Amp Ports (maximum charging speed supported by iPhone 7, 7 Plus, 6S, 6 Plus, 5, SE etc.)
  • Total 4.8 amp output means you can charge two iPhone 7 or 8 phones at fast speed at once.
  • Slim, narrow and long design.
  • Very low weight for capacity (12.6 oz or 350 gm).
  • Solid build quality with double-layer inner metal & outer polycarbonate shell
  • Matte understated finish with curvy sides
  • Reasonable Price

What We Do Not Like

  • It takes about about 10+ hours to recharge this power bank using a 2 Amp wall charger. However, the newer Quickcharge version or the PowerCore II 20000 can be recharged in 4.5 hours.
  • Is recharged via micro-USB (free cable is included). This is not an issue with iPhones as they anyway have Lightning cable charger. But most new Android phones come with USB-C chargers these days. If you have a phone that comes with a USB-C charger, we recommend buying the new Anker PowerCore Lite 20000 . It has same features and similar price as PowerCore 20100 but can be charged via both USB-C and micro-USB cables.

(Note: Anker offers a total of six Powercore brand 20000 mAh powerbanks currently!!  Refer the Anker PowerCore 20000 mah comparison table in 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 plain vanilla PowerCore 20100 is still a good option if you do not have a QC 3.0 compatible phone (such as iPhones), and want to save some money. The newer version PowerCore Speed 20000 QC  can be charged in just 4.5 hours with a QuickCharge 3.0 Wall Charger while the plain vanilla PowerCore 20100 takes minimum 10-12 hours to charge fully.

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 lowest cost 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.

A standard fast charging 2 Amp wall charger such as Anker Elite dual 2.4 amp wall charger will charge Anker PowerCore 20100 overnight (about 10 hours). Regular 1 Amp USB charger will charge it in about 20 hours.

PowerCore 20100 vs PowerCore II 20000 vs PowerCore 20000 Speed QC vs PowerCore+ 20100 USB-C vs PowerCore 20000 Speed PD

Features PowerCore 20100 PowerCore II 20000 USB-C PD PowerCore Speed 20000 PD with USB-C PD wall chargerNew Release! USB-C PD PowerCore Essential 20000 USB-C PDPowerCore Speed 20000
2.4 amp rapid charging for all iPhones
iPhone 8/7 /6s/6 /5s/SE
0 to 50% in 40 min
iPhone 11/11 Pro/XR/X 8+/7+/6s+
0 to 50% in ~1 hr min
iPhone 11, 11 Pro, XR, XS, X, 8, 8+ 0 to 50% in 30 min iPhone 11, 11 Pro, XR, XS, X, 8, 8+ 0 to 50% in 30 min
2.4 amp rapid charging for Androids 0 to 50% in ~1 hr 0 to 50% in ~1 hr 0 to 50% in ~1 hr 0 to 50% in ~1 hr 0 to 50% in ~1 hr
Fast Charging for Samsung S10, S9, S8, S7, Note 10/9/8 QC 2.0 Input/Output 50% in 30 mins QC 2.0 Input/Output compatible 50% in 30 mins 50% in 30 mins QC 3.0 Input/Output 50% in 30 mins
USB C PD for fastest charging of iPhone 11, 11 Pro, XR, XS, X, 8, 8+ 0 to 50% in 30 min 24-watt USB-C PD 18 watt USB-C PD
Time to recharge Powerbank 12 hrs with 2.4 amp charger 5 hrs with a Quickcharge charger 4 hrs with included 30-watt USB-C PD charger 6 hrs with 18w USB-C PD charger 5 hrs with a Quickcharge charger
Number of Ports 2 2 2 (1 USB and 1 USB-C) 2 (1 USB and 1 USB-C) 2
Special Features Lightest general use model Best for both iPhones and Android phones NO USB-C New release
QC 2.0 input/output support is best for Samsung S10 S9, S8, S7 and other Androids
Gets charged in 5 hrs
New release 24 watt USB-C PD output
Best for latest Android smartphones, iPhone 11/11 Pro/ XR/XS/8/8+ and Macbooks
Gets charged in 4 hrs
Best for iPhone 11/11 Pro/Max XR/XS/8/8+ iPad Pro, all Pixels and latest Android smartphones, QC 3.0 Input & Output,
Bet for Quickcharge 3.0 compatible phones such as HTC U11, LG V50 V40 G8 G7, Sony XZ1 etc. Gets charged in 5 hrs

PowerCore 20000 Speed QC  is the newer version with both Quickcharge 3.0 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). PowerCore 20000 Speed QC  is best option for QuickCharge 3.0 & Quickcharge 2.0 phones such as LG V30, Sony XZ1, Z2 Force, Nokia 8, etc. 

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

PowerCore II 20000 supports QC 2.0 (18-watt fat charging – about 50% in 30 minutes), which is the fastest charging speed supported by Samsung S9, S9+, S8, S8+, Note 8, S7, S7+, Note 5, S6 etc. It does not support QC 3.0. PowerCore II 20000  is best option for latest Samsung smartphones including S9, S8, S7 etc.

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 2016+ Macbooks as well as many modern ultrabooks and chromebooks at 15-watt charging speed. However, this model is practically obsolete and overpriced for 2018 as it does not offer USB Power Delivery (PD) charging over the USB C port. We instead recommend Anker’s latest USB C powerbank PowerCore 20000 Speed PD.

Both Google and Apple are both moving towards 18-watt USB-C PD fast charging in latest and upcoming Android phones and iPhones as well as Macbooks. If you have a Macbook, and latest iPhone XS Max, XS, XR, 8, 8 +, or iPhone X, or an Android USB-C phone such as Samsung S10, S9, S8, Note 8, S7 etc., we recommend Anker PowerCore 20000 Speed PD which supports 18-watt USB C PD fast charging (50% in 30 minutes) for the latest iPhones and Android smartphones.

Anker PowerCore 20000 Speed PD comes with a bundled USB PD wall charger and gets charged in 4 hours. It will also charge Macbooks at faster 24 watt charging speed. The combined wall charger/powerbank deal of PowerCore 20000 Speed PD is also much more reasonably priced as well. PowerCore 20000 Speed PD will also charge Nintendo Switch at maximum supported 18-watt PD charging speed. PowerCore 20000 Speed PD is the most versatile Anker Powerbank today in the 20000 mAH range and it is the best option for latest iPhone X, 8, 8+, all latest Android phones including S9, S8, S7, Macbooks, Switch etc.

Anker PowerCore 20100 is the lightest version with no Quickcharge and also costs the lowest. It is an excellent choice as a large capacity reasonably priced powerbank for both Android and iPhones if you do not need Quickcharge. It is the best bet if you plan to just charge iPhones 7, 6S or older (iPhones 7 and older do not support Quickcharge or fast charge) as it charges iPhones at maximum possible 2.4 Amp (i.e. 12 watt output) charging current. 12 watt is pretty decent charging speed for even the latest Quickcharge supporting Android phones and for most phones it provides about 40%-50% charge in 45 minutes.

PowerCore 20000 Speed QC Quickcharge 3.0 supported by QC 3.0 compatible smartphones from 0 to 80% in about 30 mins

PowerCore II 20000 & PowerCore 20000 Speed PD Quickcharge 2.0, Fast charge of Samsung S9, S8, S7 etc and USB PD fast charge of iPhone Xs, Xr, X, iPhone 8, 8+ About 50% in 30 mins

Anker PowerCore 20100 2.4 amp or 12-watt charging supported by almost all Android phones and iPhones – About 40-50% in 45 minutes 

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 4-6 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 8, iPhone 7 and iPhone 6s, 6 – Six times

iPhone 7 Plus, iPhone 8 Plus, iPhone 6s/6 Plus  – Four+ times

Samsung Galaxy S10, S9, S8, S7, S6 – Four times 

Samsung Galaxy S9+, S8+  – from 20% to 100% Four times

iPad Mini – Two times

iPad Pro – 1.5 times

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 7 and older 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.


Leave a Reply

Your email address will not be published. Required fields are marked *