Anker Powercore 20100 Power Bank Review

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4.0 stars Good but Outdated

Anker PowerCore 20100 is a large-capacity sleek and compact power bank with 2.4 amp charging and a reasonable price. However, this is 2019 and USB-C is a must for modern power banks. For similar price, Anker’s PowerCore Lite 20000 (recommended) and PowerCore Essential 20000 are more modern, lighter, slimmer, portable chargers that can also be charged via USB-C.

For slightly more, PowerCore Essential 20000 PD is a future-ready portable charger with 18-watt USB-C PD charging/recharging. It can fast-charge (from zero to 50% in 30 minutes) latest iPhones 11, 11 Pro, 11 Pro Max, XR, XS, X/8/8+, iPad Pro 11/12.9/Air 3, mini 5 and latest Samsung S10, S9/S8, S7, Note 10/9/8 and most other Android phones. It also takes half the time to get charged compared to PowerCore 20100/Essential/Lite or Redux.

Anker PowerCore 20100 What We Like

  • Compact high-quality 20000 mah portable charger
  • 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 (2.4 + 2.4 amp) 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 12 hours to recharge this power bank using a 2 Amp wall charger. However, the PowerCore Essential 20000 USB-C PD, or  the PowerCore Speed 20000 or the PowerCore II 20000 can be recharged in 4.5 to 6 hours.
  • Is recharged via micro-USB (free cable is included). This is not an issue with iPhones as they use a Lightning cable charger. However, almost all new Android phones these days come with USB-C chargers. If you have a phone that comes with a USB-C charger, we recommend buying the new PowerCore Essential 20000  or Anker PowerCore Lite 20000 . They both have same features and similar price as PowerCore 20100 but can be charged via either 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 versions PowerCore Essential 20000 USB-C PD and comes with USB-C PD and is best suited for latest iPhones and Android phones. To be honest, the plain vanilla PowerCore 20100 is now obsolete and if you want lowest priced Anker 20000 mah powerbank, then PowerCore Essential 20000  or Anker PowerCore Lite 20000  are better choices at similar price. The newer PowerCore Essential 20000 USB-C PD can be charged in just 6 hours with a PD wall charger such as iPhone 11 Pro/Max 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 New Release! USB-C PD PowerCore Essential 20000 USB-C PD USB-C PD PowerCore Speed 20000 PD with USB-C PD wall charger PowerCore II 20000 New Release! USB-C PowerCore Essential 20100 PowerCore Speed 20000
2.4 amp rapid charging for all iPhones
iPhone 8/7 /6s/6 /5s/SE
0 to 50% in 40 min
iPhone 12/11/XR/X 8+/7+/6s+
0 to 50% in ~1 hr min
iPhone 12, 11, XR, XS, X, 8, 8+ zero to 50% in 30 min iPhone 12, 11, XR, XS, X, 8, 8+ zero to 50% in 30 min
Can't fast-charge new iPhones 50% in 30 mins

Can't fast-charge new iPhones 50% in 30 mins

Can't fast-charge new iPhones 50% in 30 mins
2.4 amp rapid charging for all 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 S20, S10, S9, S8, S7, Note 10/9/8 50% in 30 mins QC 2.0 Input/Output compatible 50% in 30 mins QC 2.0 Input/Output 50% in 30 mins QC 3.0 Input/Output 50% in 30 mins
USB C PD for fastest charging of iPhone 12, 11, XR, XS, X, 8, 8+ 0 to 50% in 30 min 18 watt USB-C PD 24-watt USB-C PD
Time to recharge Powerbank 6 hrs with 18w USB-C PD charger 4 hrs with included 30-watt USB-C PD charger 5 hrs with a Samsung or Quickcharge chargers 12 hrs with 2.4 amp charger 5 hrs with a Quickcharge charger
Number of Ports 2 (1 USB and 1 USB-C) 2 (1 USB and 1 USB-C) 2 2 2
Special Features Best for iPhone 11/11 Pro/Max XR/SE 2, XS/8/8+ iPad Pro, all Pixels and latest Samsung S20/S10/S9/S8, Android USB-C smartphones, 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

Quickcharge 2.0 input/output support is best for Samsung S10 S9, S8, S7 and other Androids
Gets charged in 5 hrs
Can be charged via USB-C port Light at 12.2 oz/240 gram Good for both iPhones and Android phones 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 Essential 20000 USB-C PD  is the latest version with 18-watt USB-C PD output and input. It gets charged in about 6 hrs using a USB-C PD charger and charges latest iPhones 11, 11 Pro, 11 Pro Max, XR, XS, X/8/8+ and latest Samsung S10, S9/S8, S7, Note 10/9/8 and most other Android phones from zero to 50% in 30 minutes. 

PowerCore Essential 20000 USB-C PD also supports 18-watt Quickcharging and this makes it suitable for the widest range of modern smartphones – both iPhones and Samsung/LG/Moto/Xiaomi Androids.

PowerCore II 20000 is a micro-USB power bank (can not be charged via USB-C cable) that supports QC 2.0 (18-watt fast charging – about 50% in 30 minutes), which is the fastest charging speed supported by Samsung S10, S10+, S9, S9+, S8, S8+, Note 8, S7, S7+, Note 5, S6 etc. It does not support QC 3.0. However, we still recommend PowerCore Essential 20000 USB-C PD as it offers everything that PowerCore II 20000 offers and offers extra future ready 18-watt USB-C PD. 

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 obsolete and overpriced for 2019 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 Essential 20000 USB-C 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 11, 11 Pro, 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 PowerCore Essential 20000 USB-C 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 Essential 20000 USB-C PD  and PowerCore 20000 Speed PD with PD charger   are the most versatile Anker Powerbank today in the 20000 mAH range and it are the best option for latest iPhone 11, 11 Pro/Max, XR, XS, , 8, 8+, all latest Android phones including S10, S10+, 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 Essential 20000 USB-C PD & PowerCore 20000 Speed PD  18-watt USB-C PD  Fast charge of Samsung S10, S9, S8, S7 etc and USB PD fast charge of iPhone XS, XR, X, iPhone 8, 8+ About 50% in 30 mins

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

Anker PowerCore 20100PowerCore Essential 20000  & Anker PowerCore Lite 20000 – 2.4 amp or 12-watt charging supported by almost all Android phones and iPhones – About 40-50% in 50 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 11, iPhone 11 Pro, and iPhone XR, Xs, X,  iPhone 7 Plus, iPhone 8 Plus, iPhone 6s/6 Plus  – More than four times

Samsung Galaxy S10, S9, S9+, S8, S7, S6 – More than four times 

Samsung Galaxy S10+, Note 9, Note 10+, Note 10 –  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 PowerCore Essential 20000 USB-C PD  for superquick charging for latest iPhones and Samsung and other Android phones. The new version can charge compatible devices up to 50% in just half an hour. It also gets fully charged using a PD charger/iPhone 11 Pro/Max charger in just 6 hours and with Samsung USB-C chargers in 8 hours. 

Please note that iPhones 7, 7 plus and older do not support USB-C PD/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 at least 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.


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