... work at 70°C Characteristic:1. Green: Non-Toxic, comfort to RoHS.2. Long cycle life: > 2000 cycles, while Sealed Lead ... cycles and NiMh batteries only 500 cycles)3. SafetyThe safest battery in the world till now, which does not burn with 30V ... thermal stability: - 20°C to 60°C7. Back fast charge, good consistence, no memory effect, can equip battery charger.Can be recharged ...