Specs:

• Rated Capacity: 2.6Ah (Typical), 2.5Ah (Minimum)
• Rated Discharge: constant 0.52A discharge until 2.5V at 23C
• Rated Charge: Limiting 2.6A and constant 4.2V charge for 1.5 hours or 50mA at 23C
• Nominal Voltage: 3.6V
• Shipping Voltage: >3.45V (approximate state of charge on arrival <30%)
• Internal Resistance: ≤ 20mΩ (measured by AC impedance at 1kHz)
• End of Charge Voltage: 4.20±0.05V
• End of Discharge Voltage: 2.5V
• Charging Time: approximately 90 minutes
• Maximum Charging Current: 6A
• Maximum Discharging Current: 35A (this is NOT continuous)
• Operating Temperature:
• Charging: 0~60C
• Discharging: -40~60 oC
  
• Storage Temperature: <35C, recommended <23C for long term storage

What's in the box:

• 1 x 18650 Battery