Performance Specifi cations Nominal Voltage ........................................................................ 12 volts (6 cells) Nominal Capacity 20-hr. (140mA to 10.50 volts) ........................................................ 2.80 AH 10-hr. (250mA to 10.50 volts) ....................................................... 2.50 AH 5-hr. (480mA to 10.20 volts) ....................................................... 2.40 AH 1-hr. (1.7A to 9.00 volts) .............................................................. 1.70 AH 15-min. (5.3A to 9.00 volts) ................................................................ 1.33 AH Approximate Weight ........................................................... 2.60 lbs. (1.18 kg) Energy Density (20-hr. rate) ................................ 1.29 W-h/in3 (78.80 W-h/l) Specifi c Energy (20-hr. rate) ............................. 12.92 W-h/lb (28.49 W-h/kg) Internal Resistance (approx.) ...................................................... 60 milliohms Max Discharge Current (7 Min.) .................................................. 8.4 amperes Max Short-Duration Discharge Current (10 Sec.) .................. 28.0 amperes Shelf Life (% of nominal capacity at 68°F (20°C)) 1 Month ...................................................................................................... 97% 3 Months ..................................................................................................... 91% 6 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) Case ...................................................................................................... ABS Plastic Power-Sonic Chargers ................................................... PSC-12300A, 12500A