... 2.8V after Standard charge Minimum 9.8Ah2Nominal Voltage 3.2VMean Operation Voltage 3Voltage at end ofDischarge 2. ... 0VDischarge Cut-off Voltage 4Charging Voltage 3.65±0.03V5Internal Impedance ≤15mΩInternal resistance measured ... Capacity (1760mA) 50%75%100%95% GSP09102155F-10Ah solar energy system battery,solar battery, wind battery, lithium, LiFePO4, cells for battery packs