Rechargeable 14.8v li ion battery pack 1.For:medical device,Portable tooling,emergency ligh 2.14.8V 11ah 3.CE/ ... choosed)Working temperatureCharge-0~45°C,45~85%RHDischarge-20~60°C,45~85%RHStorage temperature andhumidity0ne month: -10 ... ~85%RHCycle life500 TIMES CYCLES (Normal temperature ,1C cycle to 60%,100%DOD)Safety certificateCERTIFICATION: CE,UL,FCC, RoHS,ISO9001