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ZMI 20k Power Bank QB820
Anker PowerCore 20100 Power Bank
See Top Ranked Portable Laptop Chargers

ZMI USB-C PD Backup Battery Packs (2017) vs Anker PowerCore 20100

Analysis:

The ZMI 20k Power Bank QB820 is one of the very best Portable Laptop Chargers that one can get for around $70. The Anker PowerCore 20100 Power Bank, however, while a very good choice at its $45 price point, falls just short of being remarkable.

No sources that perform objective hands-on testing have deemed the ZMI 20k Power Bank QB820 worthy of being included in their Portable Laptop Charger roundups, which typically isn't a good sign.

Returning to the Anker PowerCore 20100 Power Bank, Laptop Mag, a source that's known for its high-quality in-depth testing, has great things to say about it. In fact, it was named its "Ranked 3 out of 14" in its "Best Gifts for Grads 2018" roundup, which is quite a feat.

We also wanted to do a direct ZMI 20k Power Bank QB820 vs. Anker PowerCore 20100 Power Bank review performance comparison, but we, unfortunately, weren't able to find any ZMI 20k Power Bank QB820 review scores.

Finally, we compared the Anker PowerCore 20100 Power Bank to other Portable Laptop Chargers on the market and found that it did much better than its competitors - its review average of 9.0 out of 10 points is considerably higher than the 7.9 review average of Portable Laptop Chargers in general.

Comparison of expert ratings
Highly Recommended
Recommended
Mentioned
Not Mentioned
Wirecutter (NYTimes)
Wirecutter
Laptop Mag
Tom's Guide
Macworld
Techradar
Reviewed
Android Central
Android Authority
Good Housekeeping
Tech. Specs Comparison
ZMI 20k Power Bank QB820
$68
Anker PowerCore 20100 Power Bank
$29
Significantly higher than average expert review score
7.9
Overall Avg. for Portable Laptop Chargers
9.4
Avg. Review Score
Score
Higher than average expert review score
7.9
Overall Avg. for Portable Laptop Chargers
9.0
Avg. Review Score
Score
Highly recommended by trusted experts
Wirecutter
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Top 10 Tools to Handle a Power Outage” 
Last updated: 13 days ago
Wirecutter (NYTimes)
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Top 10 Tools to Handle a Power Outage” 
Last updated: 13 days ago
Reviewed
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Ranked #3 out of 9
in “The Best Power Banks for Laptops and Tablets of 2020” 
Last updated: 22 Nov 2019
Techradar
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Ranked #4 out of 9
in “Best portable laptop battery chargers and power banks in 2020” 
Last updated: a month ago
Wirecutter (NYTimes)
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best Emergency Preparedness Supplies” 
Last updated: 13 Mar 2020
Wirecutter
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best Emergency Preparedness Supplies” 
Last updated: 13 Mar 2020
Wirecutter (NYTimes)
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best Nintendo Switch and Switch Lite Accessories” 
Last updated: 3 Mar 2020
Wirecutter
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best Nintendo Switch and Switch Lite Accessories” 
Last updated: 3 Mar 2020
Wirecutter
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best USB Power Banks for Laptops” 
Last updated: 13 Feb 2020
Wirecutter (NYTimes)
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best USB Power Banks for Laptops” 
Last updated: 13 Feb 2020
Recommended by trusted experts
Android Central
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “6 Best Father's Day Tech Gifts for Dad Under $100” 
Last updated: 14 Jun 2019
Techradar
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Ranked #3 out of 23
in “Best camera accessories 2020: 23 essential bits of kit for your camera” 
Last updated: 1 May 2019
Runnerclick
Depth of
analysis
No
In-house
Testing
Runner Up
in “Our Favorite Portable Chargers Fully Reviewed” 
Android Central
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Battery Power Bank
in “Best Galaxy S20 Accessories in 2020” 
Last updated: 21 Feb 2020
Techradar
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Ranked #14 out of 16
in “Best GoPro camera 2020: ultimate action cams and the best GoPro accessories” 
Last updated: 24 Jan 2020
Charger Harbor
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “Best iPad Air 2 Chargers” 
Last updated: 6 Aug 2017
Charger Harbor
Depth of
analysis
Yes
In-house
Testing
Runner Up
in “Best Anker Power Banks” 
Last updated: 4 Oct 2019
Laptop Mag
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “Best Gifts for Grads 2018” 
Last updated: 27 May 2018
Tom's Guide
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “14 Best Road Trip Gadgets” 
Last updated: 26 May 2018
Techradar
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “Best Nintendo Switch accessories 2020: make the most of your hybrid console” 
Last updated: 7 Apr 2020
Android Central
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “Best Oculus Quest Battery Pack in 2020” 
Last updated: 6 Feb 2020
Android Central
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “Best Accessories for OnePlus 6T” 
Last updated: 29 Oct 2018
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