How would I charge an 18650 battery with a built-in protection circuit?
This is for an infrared camera. I normally could charging the device via micro usb but port broke.
4 wires are soldered to the PCB. I assume 2 are used for charging the battery and 2 are for powering this device. All wires go to a 4 pin connector which plugs into the device. The only hobby chargers I saw with you 4 pin ports were for charging 3S cells. I think connector is a male JST.
PJ-100-D is printed on the other side of the circular board.