12V/220Ah AGM Deep Cycle Batt. (M8)

Electrical Specifications

• Nominal Voltage: 12 V
• Rated Capacity (20 hr. discharge at 25°C): 220 Ah
• CCA (Cold Cranking Amps) @ 0°F / -18°C: 650 A
• RES CAP (Reserve Capacity) @ 80°F / 27°C: 250 min
• Technology: Flat plate AGM
• Terminals: M8 copper eyelet terminals

Discharge Performance (Capacity vs. Discharge Time)

• 20 hours (constant current): 100% capacity
• 10 hours: 92% capacity
• 5 hours: 85% capacity
• 3 hours: 78% capacity
• 1 hour: 65% capacity
• 30 minutes: 55% capacity

Service Life & Durability

• Float Design Life: 7 – 10 years at 20°C
• Cycle Design Life (80% Depth of Discharge): 400 cycles
• Cycle Design Life (50% Depth of Discharge): 600 cycles
• Cycle Design Life (30% Depth of Discharge): 1500 cycles

Charging Parameters

• Recommended Charge Current: Should preferably not exceed 0.2 C (44 A for this model)
• Absorption Voltage (Normal/Float Service): 14.2 – 14.6 V
• Absorption Voltage (Fastest Recharge): 14.6 – 14.9 V
• Float Voltage: 13.5 – 13.8 V
• Storage Voltage: 13.2 – 13.5 V
• Temperature Compensation: -4 mV / cell (-24 mV / °C for 12V battery); centre point at 25°C.

Mechanical Specifications

• Dimensions (L x W x H): 522 x 238 x 240 mm
• Weight: 65 kg
• Self-Discharge: Very low (lower than standard flooded batteries); can be stored for long periods without recharging.

Environmental Recommendations

• Operating Temperature: Capacity reduces at low temperatures and service life is negatively impacted by high temperatures.
• Storage: The battery should be fully charged before storage. After 24 hours of no discharge, it is recommended to enter 'Storage Mode' at a lower voltage to reduce corrosion of the positive plates.