• Nominal Capacity: 2600mAh (0.2C, 2.75V discharge)
• Minimum Capacity: 2550mAh(0.2C, 2.75V discharge)
• Charging Voltage: 4.2 ±0.05 V
• Nominal Voltage: 3.7V
• Charging Method: CC-CV (constant voltage with limited current)
• Charging Current: Standard charge: 1300mA, Rapid charge : 2600mA
• Charging Time: Standard charge : 3hours, Rapid charge : 2.5hours
• Max. Charge Current: 2600mA (ambient temperature 25°C)
• Max. Discharge Current: 5200mA (ambient temperature 25°C)
• Discharge Cut-off Voltage: 2.75V
• Cell Weight: 47.0g max
• Cell Dimension: Height : 65.00mm max, Diameter : 18.40mm max,
• Operating Temperature: Charge : 0 to 45°C, Discharge: -20 to 60°C
• Storage Temperature 1 year: -20~25°C, 3 months : -20~45°C, 1 month : -20~60°C

A standard 2600mAh cell from Samsung.

Very nice matching of the two batteries and capacity is nearly independent of load.