Melasta Rechargeable Li-ion Cylindrical 18650 Cells 2S1P 7.4V 2600mAh Battery Pack with PCM for Pos Machine Specification: Battery Type: 18650 Li-ion Cylindrical Rechargeable Battery Brand: Melasta Cell Model: ICR18650 Battery Configuration: ICR18650*2PCS Normal Voltage: 7.4V Charging Cut-off Voltage: 8.4V Discharge Cut-off Voltage: 6.0V Normal Capacity: 2600mAh Battery Pack Size: 18.2 * 38 * 68mm Standard Charge Current: 1300mA (0.5C) Max Constant Charging Current: 2600mA (1C) Max Constant Discharging Current: 2600mA (1C) Peak Discharge Current: 3900mA (1.5C) Recharging cycles: 500 times @ 0.5C charge & discharge current, 80% of initial capacity Weight: 95g Warranty: 1 year