Hey, anyone out there have a circuit that works well to charge a Lithium-Ion battery? I want to make a few battery chargers. something that I could leave a battery in and it wont ruin it. or take a battery out and it wont overheat or run wild or anything
what I'm thinking is kind of a docking station that I could put a spare phone battery onto and it could charge. after that, should I have a low battery, I might swap them out and then have the alternate battery charge.
See I have several batteries for my phone. Three to be exact. And a battery thats almost brand new that I have barely had occasion to use from my old phone. I want to charge these batteries and use the batteries in parallel to power a raspberry pi off of. always leaving one battery in the charger to power the pi.
I just think that I may be able to keep spare batteries for my phone charged and get a raspi running full time even when my car is off.
SO anyone know a circuit that will charge a battery and stop charging when it's full.