Specifications: Cells Per Unit 6 Voltage Per Unit 12 Capacity 18Ah@20hr-rate to 1.75V per cell @25oC Weight Approx. 5.0 Kg Max. Discharge Current 180A (5 sec) Internal Resistance Approx. 14 mΩ Operating Temperature Range Discharge: - 20oC~60oC Charge: 0oC~50oC Storage: - 20oC~60oC Normal Operating Temperature Range 25oC±5oC Float charging Voltage 13.7 to 13.9 VDC/unit Average at 25oC Recommended Maximum Charging Current Limit 5.4 A Equalization and Cycle Service 14.6 to 14.8 VDC/unit Average at 25oC Self Discharge Batteries can be stored for more than 6 months at 25oC. Self-discharge ratio less than 3% per month at 25oC. Please charge batteries before using. Terminal Faston Faston F3/F13 Constainer Material A.B.S. (UL94-HB) , Flammability resistance of UL94-V2 can be available upon request