Performance Specifi cations Nominal Voltage ...........................................................................6 volts (3 cells) Nominal Capacity 20-hr. (1A to 5.25 volts) ................................................................ 20.00 AH 10-hr. (1.86A to 5.25 volts) .......................................................... 18.60 AH 5-hr. (3.4A to 5.10 volts) .............................................................. 17.00 AH 1-hr. (12.4A to 4.50 volts) .......................................................... 12.40 AH 15-min. (39.2A to 4.50 volts) .............................................................. 9.80 AH Approximate Weight ........................................................... 7.10 lbs. (3.22 kg) Energy Density (20-hr. rate) ................................. 1.21 W-h/in3 (73.65 W-h/l) Specifi c Energy (20-hr. rate) .............................. 16.90 W-h/lb (37.26 W-h/kg) Internal Resistance (approx.) ........................................................ 7 milliohms Max Discharge Current (7 Min.) ................................................... 60 amperes Max Short-Duration Discharge Current (10 Sec.) ................... 200 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 64000A-C