New Technology-Hot Swap Battery System SMART Battery Pack Cell Sanyo UF553450Z 6S1P Nominal Voltage 22.2V Nominal Capacity 1100mAH End Voltage 18V Charging Voltage 25.2V Charging Current (Max.) 1.0A Discharging Current (Std.) 1.0A Discharging Current (Max.) 2.0A Gauge Function SMBus 1.1 Balance Function Yes Safe Function Under Voltage Protect Over Voltage Protect 2nd Over Voltage Protect Over Charge Current Protect Over Discharge Current Protect Over Charge Temperature Protect Over Discharge Temperature Protect Short Current Protect Reverse Charge Protect