Headway 38120HP(8Ah) High Rate Lithium Ion Cell https://www.headway-lib.com/38120HP-8Ah-High-Rate.html Nominal capacity:8Ah @0.5C Minimum capacity:7.5Ah @0.5C Nominal voltage:3.2V Max Charging voltage:3.65 ±0.05 V Discharge ending voltage:2.5 ±0.05 V Charge current: Standard charge: 3C Max charge: 10C when T≥10℃ Max charge: 3C when 10℃≥T≥0℃ Max charge: 0.1C when 0℃≥T≥-10℃ Discharge current: Standard discharge: 5C Max discharge: 15C Max instant discharge: 30C Recommended charge and discharge cell surface temperature: Charge:0～45℃ Discharge:-20～60℃ Humidity range 0～90%RH (none condensing) Internal resistance ≤4mOhm (AC Impedance, 1000HZ) Cell Height: 136mm Max Cell Diameter: 38.5mmMax Cell Weight 330±5 g