Chosen Solution
it’s a long story. i heard 3.7V Li-Ion rechargable battery has 4.2V at full charged. but i have a problem with making full charge detect and cutting off charge circuit in my situation. so i think put 4.1V to the battery all the time makes charging but not over-charging it. is this possible idea? thanks in advance.
Anonymous, you can do that if you develop a proper circuit. You will need to provide a feedback circuit for the battery to manage the power to it. You can not just continuously supply 4.1V to the battery. I would suggest that you repair whatever device this goes with.
