4 pins with unknown polarity, i want to charge a battery with it? Answered
So I have 4 pins with unknown polarity, and a rechargeable battery with 2 pin with known polarity, and i got a multimeter.
How am i going to solve this?
I randomly did something and it worked, but it did not charge, but it could use the battery, but now its empty it cant anymore.
layout used is --++
please help :)