One of the wires from the battery was disconnected ... as I'd expect the capacity of even a cheap 18650 cell to be about 2,300 mAh. This means the entire pack had a capacity of 6,000 mAh, a ...

Nerd Ralph loves cheap and dirty hacks, and for that we applaud him. His latest endeavor is a LiFePO4 battery charger that he made out of parts he had on hand for under $0.50 US. (Although we ...

a tiny battery, and the video isn’t that great. It only costs eight dollars, though, so [pixelk] decided to vastly expand the abilities of this cheap camera for a Hackaday Prize entry.