Hi, I have a winch machine which I have modified to work with the remote instead of the its wired control box. I was hoping if someone can help me develop a charging circuit with battery low indicator & full charge indication circuit with or without PIC for the remote. I have couple of 12F676 for the job if needed.

I have made 3 battery packs of four 1.2V (700mAH) NiCD each, so each pack has 4.8V & total current 2.1 AH for the transmitter. I have a spare nokia charger with 5.7V @ 800mA output which I am hoping to use for this purpose. So if anyone knows or have seen any circuit which puts all together, please share it.
Thanks