Super-simple DIY charger for NiMh button cells.
23:11
Simple NiMH battery charger (with PCB files)
30:00
Using salvaged lithium cells to power LEDs directly. (with protection test)
25:46
Using LEDs as mains indicator lights on 120V and 230V (live demos)
26:58
Simplest solar light possible, using old phone battery.
14:01
Will this 286 mainboard ever work again? Heavy damage by leaky battery
11:31
DIY LiPo Charge/Protect/5V Boost Circuit
22:43
Inside a cheapo NiMh charger with schematic.
13:50