... 12V, Ni-Mh 3/4SC2100mAh 18V, etc.. Characteristics:1. Self-discharge is very low, which could prolong the using life.2. safety ... temperature, and so on.3. Green power, ST battery is free of Pb, Cd, Hg, Cr6+, PBB and PBDE, they are environmental ... .9. Handling performance, maintenance-free and wide application. F13000mah 24v ni-mh rechargeable battery pack