I have a 15600MAh battery pack that came in one of my devices. Long story short, the controller circuit that charges the batteries was fried in a power outage, but the batteries are still good. I have replaced the device they came in, but I was thinking about re-purposing the batteries for a DIY project. I have several Li-Ion/Li-Po battery balancing/charging circuits, but none of them are made for a configuration like this.
I need a good Li-Ion battery charging board for this battery pack, any ideas?
I don't have a multi-meter capable of measuring Amps, but I estimate the batteries to put out a total of around 3A, and I get a voltage reading of about 4.5V.