... at 15C5. There are many models, such as: Ni-MH SC3300mAh 19.2V, Ni-MH SC3600mAh 12V, Ni-Mh 3/4SC2100mAh 18V, etc.. Characteristics:1. Self-discharge is ... about over-discharging, over-charging, high temperature, and so on.3. Green power, ST battery is free of Pb, Cd, Hg ... .9. Handling performance, maintenance-free and wide application. F13000mah 24v ni-mh rechargeable battery pack