... 19.2V, Ni-MH SC3600mAh 12V, Ni-Mh 3/4SC2100mAh 18V, etc.. Characteristics:1. Self-discharge is very low, ... , high temperature, and so on.3. Green power, ST battery is free of Pb, Cd, Hg, Cr6+, PBB and ... temperature range 0 degree to 40 degree; specially designed battery used in high or low temperature.8. No memory ... maintenance-free and wide application. F13000mah 24v ni-mh rechargeable battery pack