... your devices even outside, Suitable for your demandsThis super capacity battery box performs little resistance, super storing capacity, multi-recycable ... temperatureCharge-20~45°C,45~85%RH Discharge-20~60°C,45~85%RHStorage temperature andhumidity 0ne month: -20~+55°C ... polyswitch will cut off power if battery discharge current 5, Perfect for building up battery pack for medical equipment Back-up or ...