Performance Specifi cations Nominal Voltage ...........................................................................4 volts (2 cells) Nominal Capacity 20-hr. (450mA to 3.5 volts) ............................................................... 9.0 AH 10-hr. (830mA to 3.50 volts) ............................................................. 8.3 AH 5-hr. (1.53A to 3.40 volts) ............................................................... 7.7 AH 1-hr. (5.6A to 3.00 volts) ................................................................. 5.6 AH 15-min. (17.6A to 2.70 volts) ..................................................................4.4 AH Approximate Weight ........................................................... 2.20 lbs. (1.00 kg) Energy Density (20-hr. rate) ................................ 1.39 W-h/in3 (84.67 W-h/l) Specifi c Energy (20-hr. rate) ............................. 16.36 W-h/lb (36.08 W-h/kg) Internal Resistance (approx.) ...................................................... 11 milliohms Max Discharge Current (7 Min.) ................................................ 27.0 amperes Max Short-Duration Discharge Current (10 Sec.) .................. 90.0 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 ..........3 batteries in series with PSC-12800A, 12800A-C, 122000A-C