I am making a small project that has a li-ion battery for power. I need to be able to charge the battery within the circuit and am trying to find the correct amperage to charge it with. The battery is a 3200mAh li-ion cell (3.8V), and I am wondering what the maximum (safe) amperage is to charge the cell. I know (think) the optimal amperage to charge with would be 3.2A (1C), but is it safe to use 4A (1.25C) or even 5A (1.56C) without blowing anything up?
EDIT: I am using an Anker 3200mAh battery, but couldn't find a datasheet on their website (after a quick search). LINK