12 Volt 8.5 AH @ 20 hour rate
Power-Sonic Chargers: PSC-12800A, 12800A-C
Dimension (Length x Width x Height): L: 5.94" (151mm) W: 2.56" (65mm) H: 3.70" (94mm)
Designed for Cyclic, Standby and Solar Applications.

Features:

• Absorbent Glass Mat (AGM) technology for superior performance
• Valve regulated, spill proof construction allows safe operation in any position
• Power/volume ratio yielding unrivaled energy density
• Rugged impact resistant ABS case and cover (UL94-HB)
• Approved for transport by air. D.O.T., I.A.T.A., F.A.A. and C.A.B. certified

Manufacturer datasheet - PSH1280 (Adobe Reader required to read datasheet)

Quick Connect Terminal Version F2: .250" male
Nominal Voltage: 12 volts (6 cells) Nominal Capacity 20-hr. (425mA to 10.50 volts): 8.50 AH 10-hr. (810mA to 10.50 volts): 8.10 AH 5-hr. (1.5A to 10.20 volts): 7.50 AH 1-hr. (5.27A to 9.00 volts): 5.27 AH 15-min. (17.5A to 9.00 volts): 4.38 AH
Approximate Weight: 6.00 lbs. (2.72 kg)
Energy Density (20-hr. rate): 1.81 W-h/in3 (110.63 W-h/l)
Specific Energy (20-hr. rate): 17.00 W-h/lb (37.48 W-h/kg)
Internal Resistance (approx.): 15 milliohms
Max Discharge Current (7 Min.): 25.5 amperes Max Short-Duration
Discharge Current (10 Sec.): 85.0 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 (UL94 V-O flame retardant)