Ambient Weather BC-1900 Intelligent 9V Battery Charger, Analyzer and Diagnostic Center for NiCad and NiMh Batteries The Ambient Weather BC-1900 is the most advanced 9V battery charger on the market. The BC-1900 supports NiCad and NiMh 9V batteries. Note: Does not support LiIon batteries. The BC-1900 intelligent battery charger is sophisticated, simple to use, smart, and safe. The charger features four independent channels that can be programmed as group or individually. The BC-1900 can also revive spent rechargeable batteries, or recondition batteries that have not been used for a long period of time, restoring them to their rated original capacity. In addition, batteries can be tested for present capacity and end of life. The BC-1900 charges and discharges NiMH and NiCad rechargeable batteries. The BC-1900 provides four independent charging slots. In addition, the charger can also optimize and test the maximum capacity of each rechargeable battery.