Nominal Voltage 12V Discharge Temperature -15~50 Nominal Capacity (10 hour rate) 20Ah Charge Temperature 0~40 Number of Cells 6cells Storage Temperature -15~40 2. Rated Capacity at 25 (77 F) 6. Inner Resistance & Max . Discharge Current 10 hour rate (0.1C, 10.8V) 20Ah Fully Charged battery at 25 (77 F) 15m 3 hour rate (0.25C, 10.8V) 16.5Ah Max. Discharge Current 300A (5s) 1 hour rate (0.55C, 10.5V) 11.8Ah Short Circuit Current 1000A 3. Capacity affected by Temperature (10 hour rate) 7. Self-discharge at 25 (77 F) 40 (104 F) 103% Capacity after 3 month storage 91% 25 (77 F) 100% Capacity after 6 month storage 82% 0 (32 F) 85% Capacity after 9 month storage 73% -15 (5 F) 65% Capacity after 12 month storage 64% 4. Dimension and Weight 8. Constant voltage charging at 25 (77 F) Length 181mm Cyclic use 14.4~14.9V Width 77mm Maximum charging current 6A Height 167mm Temperature compensation -30mV/ Total Height 167mm Float use 13.6~13.8V Reference Weight 5.5kg Temperature compensation -20mV/