small size sealed battery free maintenance and long life service small resistance and high output high quality, full capacity Rated Voltage6VCapacity (10hr,1.80V/ Cell,25°C)4AhWeightabout 0.8kgHeight 101mmLength 70mmWidth 47mmInterior Resistance (Completely Charge)about 4.5mΩ,25°CSelf-Discharge (25°C)<3% per monthCharge Time10h (50%DOD)Using TemperatureDischarge: -45°C~50°CCharge: -20°C~45° ...