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ZMI 20k Power Bank QB820
Dell Power Companion PW7015M
See Top Ranked Portable Laptop Chargers

ZMI USB-C PD Backup Battery Packs (2017) vs Dell Power Companion Portable Chargers 2017

Analysis:

The ZMI 20k Power Bank QB820 is widely considered to be a great Portable Laptop Charger at its $60 budget. The Dell Power Companion PW7015M, however, while also a good product at this price point, doesn't stack up against its competitors quite as well.

No sources that do their own in-depth testing have considered the ZMI 20k Power Bank QB820 to be a good enough purchase for it to earn a sport in their Portable Laptop Charger roundups, which is typically a bad sign.

Taking a look at the Dell Power Companion PW7015M, we found that it hasn't managed to perform well enough to earn a spot in any Portable Laptop Charger roundups done by sources that conduct their own, high-quality, hands-on testing. That alone makes it difficult to recommend.

As a last step, we wanted to do a head-to-head ZMI 20k Power Bank QB820 vs. Dell Power Companion PW7015M comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.

Comparison of expert ratings
Highly Recommended
Recommended
Mentioned
Not Mentioned
Wirecutter (NYTimes)
Laptop Mag
Macworld
Techradar
Reviewed
Charger Harbor
Lifewire
Switch Chargers
Reddit
YouTube
Tech. Specs Comparison
ZMI 20k Power Bank QB820
$59
Dell Power Companion PW7015M
$59
Significantly higher than average expert review score
7.9
Overall Avg. for Portable Laptop Chargers
9.5
Avg. Review Score
Score
Has no expert reviews
No Data
Recommended by trusted experts
Wirecutter (NYTimes)
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Best Overall
in “The Best Emergency Preparedness Supplies” 
Last updated: 31 Jul 2020
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 of 2020” 
Last updated: 17 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: 22 May 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 (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
Laptop Mag
Highly Trusted Source
Depth of
analysis
Yes
In-house
Testing
Runner Up
in “Best Accessories for Your Dell XPS 13” 
Last updated: 2 Feb 2018

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