Power-Sonic Model PS-682 6-volt/9.0 amp/hr sealed rechargeable battery with quick-connect terminals.
This is the battery that we use and recommend for all of our 6-volt equipment! Be sure to buy a float charger or solar panel for long, trouble-free battery life!
Size: Length: 3.86" Width: 2.20" Height: 4.65" Height to top of terminals: 4.72" Weight: 3.2 lbs
Performance Specifications: Nominal Voltage: 6 volts (3 cells) Nominal Capacity: 20-hr. (450mA to 5.25 volts): 9.00 AH 10-hr. (810mA to 5.25 volts): 8.10 AH 5-hr. (1.53A to 5.10 volts): 7.65 AH 1-hr. (5.58A to 4.50 volts): 5.58 AH 15-min. (17.6A to 4.50 volts): 4.40 AH Energy Density (20-hr. rate): 1.37 W-h/in3 (83.45 W-h/l) Specifi c Energy (20-hr. rate): 16.88 W-h/lb (37.20 W-h/kg) Internal Resistance (approx.): 15 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)