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ZMI 20k Power Bank QB820
Aukey PB-Y13 10,000mAh PD Power Bank
See Top Ranked USB-C Battery Packs

ZMI USB-C PD Backup Battery Packs (2017) vs Aukey PB-Y13 USB-C Battery Packs With PD (2018)

Analysis:

The ZMI 20k Power Bank QB820 and Aukey PB-Y13 10,000mAh PD Power Bank make for very strong choices and are great USB-C Battery Packs for their respective $68 and $29 asking prices. Depending on how much you're willing to spend, either of these options will serve you well.

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

As for the Aukey PB-Y13 10,000mAh PD Power Bank - Wirecutter, a source that conducts reliable hands-on testing, has featured it in its The Best Portable Chargers and Power Banks for Phones and Tablets 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 PB-Y13 10,000mAh PD 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 Aukey PB-Y13 10,000mAh PD Power Bank to other USB-C Battery Packs on the market and found that it did much better than its competitors - its review average of 9.6 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
Reviewed
Laptop Mag
Charger Harbor
Lifewire
Macworld
nytimes.com
Switch Chargers
Reddit
Tech. Specs Comparison
ZMI 20k Power Bank QB820
$68
Aukey PB-Y13 10,000mAh PD Power Bank
$29
Significantly higher than average expert review score
7.9
Overall Avg. for USB-C Battery Packs
9.4
Avg. Review Score
Score
Significantly higher than average expert review score
7.9
Overall Avg. for USB-C Battery Packs
9.6
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: 11 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
Wirecutter
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Mentioned
in “The Best Portable Chargers and Power Banks for Phones and Tablets” 
Last updated: 13 days ago
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