Battery type: lithium titanium oxide (Lithium Titanate) (LTO) Nominal Voltage / V 38.4V Nominal Capacity /AH (25 C, 0.2C) 40AH Nominal internal resistance: 0.29 m Weight 49 Lb (22Kg) Dimensions L x W x H 18.9 x 10.25 x 9.85 Inches (481 x 261 x 251 mm) Voltage Window 29v 2500 Cycles Operating Temperature -45 C to 65 C Storage Temperature 45 C to 65 C Storage conditions 45 C to 65 C Terminal Anderson Plug SB175