... . There are many models, such as: Ni-MH SC3300mAh 19.2V, Ni-MH SC3600mAh 12V, Ni-Mh 3/4SC2100mAh 18V, etc.. Characteristics:1 ... on.3. Green power, ST battery is free of Pb, Cd, Hg, Cr6+, PBB and PBDE, they are environmental friendly chemical ... conveniently.9. Handling performance, maintenance-free and wide application. F13000mah 24v ni-mh rechargeable battery pack