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ZMI 20k Power Bank QB820
Aukey 20,000 Universal Power Bank PB-Y23
See Top Ranked USB-C Battery Packs

ZMI USB-C PD Backup Battery Packs (2017) vs Aukey 20,000 Universal Power Bank PB-Y23

Analysis:

Both the ZMI 20k Power Bank QB820 and the Aukey 20,000 Universal Power Bank PB-Y23 are great USB-C Battery Packs for people that are willing to spend around $55; it's impossible to go wrong with either option.

The ZMI 20k Power Bank QB820 hasn't managed to perform well enough to earn a place in any USB-C Battery Pack roundups conducted by sources that do their own, high-quality, hands-on testing. That alone makes it a hard product to recommend.

As for the Aukey 20,000 Universal Power Bank PB-Y23 - Android Central, a source that conducts reliable hands-on testing, has featured it in its Best Battery Packs to Power Your Google Pixel Slate roundup. However, it didn't make it to any of the top spots.

We also wanted to do a direct ZMI 20k Power Bank QB820 vs. Aukey 20,000 Universal Power Bank PB-Y23 review performance comparison, but we, unfortunately, weren't able to find any ZMI 20k Power Bank QB820 review scores.

Finally, we compared the Aukey 20,000 Universal Power Bank PB-Y23 to other USB-C Battery Packs on the market and found that it did much better than its competitors - its review average of 9.2 out of 10 points is considerably higher than the 7.8 review average of USB-C Battery Packs in general.

Comparison of expert ratings
Highly Recommended
Recommended
Mentioned
Not Mentioned
Wirecutter
Techradar
Laptop Mag
Reviewed
Android Central
Charger Harbor
Lifewire
Macworld
nytimes.com
Switch Chargers
Tech. Specs Comparison
ZMI 20k Power Bank QB820
$68
Aukey 20,000 Universal Power Bank PB-Y23
$42
Significantly higher than average expert review score
7.9
Overall Avg. for USB-C Battery Packs
9.4
Avg. Review Score
Score
Higher than average expert review score
7.9
Overall Avg. for USB-C Battery Packs
9.2
Avg. Review Score
Score
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: 12 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
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 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
Recommended by trusted experts
Android Central
Trusted Source
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “Best Battery Packs to Power Your Google Pixel Slate” 
Last updated: 15 Jan 2019
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