... Feature:1. Safety: currently the safest li-ion battery, CE ROHS SGS UL UN38.3 approved, none ... . PCB and BMS built inside to protect the battery.2. Environment friendly, no toxic material contained,no ... rare metal.3. Powerful: HP battery can discharge in 15C_20C.4. Long life cycle, ... temperature -20---60 centigrade.7. Small in size and light in weight. Compare with our battery, 1/2 ...