Official specifications:

Typical capacity: 3200mAh

Minimum capacity: 3100mAh

Nominal voltage: 3,75V

Charge voltage: 4,2V - 4,35V ± 0,05

Discharge cut-off voltage: 2,75V

Continuous discharge: 1,5C = 4650mA

Chemistry: LiNiCoAlO2

Protection: No

Button top: no

Diameter: 18,30mm ± 0,05mm

Length: 64,9mm ± 0,05mm

Weight: 49g ± 0,01g

Charge methode: CC-CV