I've just finished building a small battery powered amplifier. It's currently powered by a 9v battery, but the circuit can handle up to 16 volts. I want to power it at 12 volts using rechargeable batteries, & today i scored a bunch of NiCd batteries on freecycle.com. The batteries are Sanyo Cadinca Extra KR-600AE 1.2v 600mAh (Standard Charge 14-16 Hours at 60am). I've wired 10 of them in series to make a 12 volt battery pack.
Now i need a safe way to recharge them. I have a 12v adapter for home use, and a cigarette lighter adapter for use on the road, so I would like to build a circuit that will use a 12v supply to charge the batteries up to a safe level, and then trickle. Can anyone here recommend a schematic?
Thanks so much for your time,
-Jack