Product code: 5060716640155, Type: Lithium-Iron Phosphate (LiFePo4), Cells: 3270 cylindrical 3.2V 6000mAh, Arrangement: 4S *3P, Management: Internal BMS active balanced. Capacity: 18AH nominal, 238Wh @ 25oC BMS protection: Short Circuit electronic trip: (>50A <250µS); Over voltage: detect 15.2V <2S, release 14.4V; Over discharge voltage: 9.8V <2S, release 11.8V. Battery voltage nominal: 12.8V, charged and rested: 13.2V typical. Size: (mm ±2) L*W*H 165*125*75 (Excluding T-Anderson connector adds 25mm to height), Weight: 2.2KG. Depth Discharge: 100% Efficiency: 99%. Internal resistance ( ±3%) : 45mΩ @ 50% SOC 25oC, Self-discharge: 2.5% per month. Maximum recommended dry storage duration: (@55% capacity): 12 months. Max continuous discharge current: 20A Peak surge discharge current: 40A for 10 seconds. Max continuous charge current: 20A, Max charge voltage: 14.6V. Recommended charge current <10A. Recommended Charge voltage 14.4V, charge type: CC/CV. Recommended low voltage disconnect 11V. Float voltage (when applicable) 13.1V - 13.2V. Operating temperature range: Discharge -20oC to +50oC, storage temperature range: -20oC to +30oC. Charging temperature range: 0oC - +50oC. Terminals M6 thread bolts or supplied T-Anderson (Discharge), Lotus - RCA (Charge). Terminal torque 2.5Nm. Case material: ABS, Ingress Rating: IP64. Parallel configuration: unlimited, Series: 4 batteries maximum. Life Span: >5000 cycles @80% - 30% DOD @ 0.5C, >2500 cycles DOD 95% @ 1C. Compliance: Certification CE (battery) UL1642/IEC62133 (cells), UN3480 Class 9 (shipping). Designed by KS Energy Holdings (UK) Limited, assembled in China.