Official specifications:

Nominal Capacity (0.2C discharge): 2600mAh 9.36Wh (2.0V cut-off)

Rated Capacity (0.2C discharge): 2500mAh 9.00Wh (2.0V cut-off)

Capacity at 1C: 2563mAh 9.23Wh (2.5V cut-off)

Capacity at 10A: 2577mAh 8.80Wh (2.5V cut-off)

Nominal Voltage: 3.6V

Internal Impedance: 13.0mOhm Typ. measured by AC1kHz

Cycle Performance: 70% Min. of Initial capacity at 300 cycles 10A discharge, 2.5 volt cut-off

Size (with plastic tube): Diameter 18.35mm max, Length 65.20mm max

Standard Charge Current : 2.5A

Standard Charge Time : 2.5h

Weight: 44.3g Average