I have a very small TP4056 based li-ion battery charging circuit board. It has integral LED charging status lights, but I would like to add a remote LED to indicate when a battery is inserted and actively being charged.
The TP4050 has an input of +-5VDC and output two connectionsfor the battery under charge.
How could I hook up a simple LED using only the +5V input connections and/or the output connections to the battery so that when the battery is connected and charging is active, the external LED lights ups? I thought about just piggy backing on the internal LEDs, but they are very tiny surface mount devices and I cannot solder to them without most likely damaging the board.