Ni-Fe solar Battery,VARTA Tech,total GREEN! 1.capacity:10Ah~1000Ah 2.SGS, GOST,IEC. 3.Long life: 15~20 years 4.-20'C~50'C Ni-Fe solar Battery,VARTA Tech,military facotry,GREEN energy! Advantage:1.Wide capacity range:10Ah~1000Ah 2.SGS, GOST,IEC. certificate4.Long life: 15~20 years 5.-20'C~50'C Speciation:SEIDEN Ni-Fe battery is widely used as DC back-up power supply for railway, rolling stocks, ...