Bought a cheap bluetooth headphones with terrible battery life because I like the form factor and I get to tinker. battery is 200mah and i want to swap a 350 mah instead. What should be my considerations, except of course matching voltage, size ?
Here are a couple of pics: https://ibb.co/album/m5r5Hn. The red/orange cables go straight from the battery to the board. There is only one bluetooth IC. I don't know if there should be some some sort of overcharge protection IC ? Do lipo batteries have in-built overcharge protection ?