... -charging, high temperature, and so on.3. Green power, ST battery is free of Pb, Cd, Hg, Cr6+, PBB and PBDE ... 0 degree to 40 degree; specially designed battery used in high or low temperature.8. No memory effect, they can be charged ... performance, maintenance-free and wide application. F13000mah 24v ni-mh rechargeable battery pack