I built an ADVANCED Battery Bank (Open Source)
Ben Makes Everything
Jun 30, 2026 23:07
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Chapters
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I built this portable Lab-Bench Power Supply, small enough to fit in your pocket. It runs on a lithium-ion battery, and can supply anywhere from 0.8 to 22 volts!
Chapters:
This device uses a TPS25730 for USBC power, a BQ25792 for battery charging, TPS55289 for regulating voltage, and two INA226 chips for current monitoring. Output is protected by a TPS25947. The displays are: HCMS-2973 (Green), HCMS-2974 (Orange).
Open Source Github project (WIP): https://github.com/BenMakesEverything/Pocket-Lab-Power-Supply
Science & Technology