this post was submitted on 31 Oct 2025
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That guy's got some brass ones, lol.
I've upcycled disposable vape batteries for lots of projects, but never anything that draws significant amounts of current. Usually powering ESP8266/ESP32 projects that draw a couple hundred mAh at most.
While I'm all for keeping thing out of the landfill, I would be absolutely terrified to put that many questionable quality lithium batteries into an array let alone try to draw any substantial amperage from them.
They put fuses on every single cell, another one between both halves of the setup, and monitor everything using a BMS. I wont claim that this thing is as safe as a commercially available product but treating this as if it where outrageously dangerous is misrepresenting things as well.
Good things to do, but it still only takes on poor quality cell to go up in flames and the rest will quickly follow.
Still very interesting.