... years 4.-20'C~50'C Ni-Fe solar Battery,VARTA Tech,military facotry,GREEN energy! Advantage:1 ... .-20'C~50'C Speciation:SEIDEN Ni-Fe battery is widely used as DC back-up power ... applications. Benefits of SEIDEN Pocket plate Ni-Fe Battery Excellent charging efficiency and smooth discharge voltage High reliability ... such as UPS/FEDEX/DHL, to assure the battery can arrive at your side safe and fast, normally ...