185 - A small and portable DC bench power supply that can be battery powered.

Published at : 23 Dec 2025

I have started doing regular electrical and electronic repair work for a local charity and I found that I sometimes need a DC power supply for testing and troubleshooting. I was looking for something small that can be battery powered but the popular USB-C power supplies were expensive. Then I found a much cheaper little buck-boost DC power supply module. It may be called XY-SK80H, at least that is on box. Its not the world greatest power supply by any means but has already proven its value in recent repairs.
#buck-boost
#electronics
#TheHWcave

The ultimate box maker I used for the enclosure was created by Heartman and can be found here: https://www.thingiverse.com/thing:1264391/files
The tilting bail design is from RappaportDesign and can be found here: https://www.thingiverse.com/thing:4491679

My review of the Edge X100 powerbank is here: https://youtu.be/HFosMI8z2G4
but any reasonably beefy powerbank will work too, even at just 5V (but higher voltage is better)

You can support the channel by becoming a patron. https://www.patreon.com/user?u=45604138
As a patron you get early access to all my videos as well as exclusive content.

0:00 Testing the module
4:04 Enclosure
6:33 Testing with USB power
6:59 Adding tilting bail
7:28 Operation
10:45 Behaviour
15:13 Efficiency
17:23 Conclusion