Specifications: Chemistry: SLA (Sealed Lead Acid). Case: ABS Plastic. Terminal Type: NB2. Nominal Voltage: 12 Volts (6 Cells). Nominal Capacity: 20-Hour (900mA to 10.5V). 18.0 Ah. 10-Hour (1.7A to 10.5V).. 17.0 Ah. 5-Hour (3.2A to 10.2V).. 16.0 Ah. 1-Hour (11.1A to 9.0V).. 11.1 Ah. 15-Min. (34.3A to 9.0V).. 8.58 Ah. Energy Density (20-Hour Rate): 1.53 W-h/in³ (93.51 W-h/l). Specific Energy (20-Hour Rate): 17.14 W-h/lb (37.79 W-h/kg). Max Discharge Current (7 Min.): 54.0A. Max Short-Duration Discharge Current (10 Sec.): 180.0A. Internal Resistance (approx.): 14.0 milliohms. Shelf Life of nominal capacity at 68°F (20°C)): Month: 97%. Months: 91%. Months: 83%. Operating Temperature Range: Charge: -4°F (-20°C) to 122°F (50°C). Discharge: -40°F (-40°C) to 140°F (60°C). Dimensions (LxWxH): 7.13" 3.00" 6.59" (181mm 76mm 167mm). Approximate Weight: 12.6 lbs. (5.72 kg).