SMART KIT 1027 NI-CAD BATTERY CHARGERS is a battery charger with this circuit you can charge any nickel cadmium battery from 50mA to 400mA. It has a charge switch selector switch and you can charge more than one battery at a time. The circuit is completely secure and your batteries are not in danger of being damaged. 12-18V AC power supply. Charging current: 50-200mA adjustable.