This circuit is Ni-MH Charger Automatic stop charging. It can support 1 to 10 cell (1.2 V per cell )depend on DC input which can supply to board 12-16V. Come with the schematic diagram , how to install. 

Technical information:

- Input Voltage 12-16V at least 1A

- 1 to 10 cell capable 

- Current Charging at 800mA max

- Automatic stop when full charging ,RED LED indicator

- Green LED indicator to check correct the polarity of Battery.

- Can support all Ni-MH Bettery

- PCB size 2.3" x 3.4"

- PCB high including heat sink 1.1"