@Sjaak, I have had no problem with those clips.
@rwinscot, I haven't seen any fuel gauges, nor do I see many chargers designed for LiePO4 batteries. The ones I have seen are in hacker unfriendly packages, which is why I went this route. There is an LED on the board, the paper covers it, but it shines through ok. It has 4 states - Constant on = constant current mode. Slow flash = Constant Voltage mode. Off = Charge complete. Rapid flash = Error, no battery detected, voltage below 2.5v (I think I don't remember), or voltage at VCC. With only 8 pin device I couldn't squeeze more LED. I do wish I had put a power LED in there.
- Layout of the board
- charger.png (6.07 KiB) Viewed 1049 times
- Schematic. Nothing too fancy