Lithium Ion Cylindrical 18650 Power Cell - Specification Summary

Nominal Voltage 3.7 Cell voltage is between 3.6v ~ 3.9v when shipped
Capacity Range 1,300 mAh  
Charge Max Charge Voltage 4.2 Charge voltage must not exceed 4.2v
Max Charge Current 2.0C Standard charge @ 1.0C. Quick Charge @ 2.0C
Charging Method Constant Current / Voltage Standard Charge: 0.2C @ 4.2v
Constant Current / Voltage Quick charge: 0.5C @ 4.2v
Discharge Min Discharge Voltage 2.75  
Max Discharge Current 20.0C Max continuous discharge current is 13,000 mAh (10C). Max pulse current is 26,000 mAh (20C)
Self Discharge Residual Capacity >97% After standard charging, stored at 25°C ±5°C for 30 days, then measured @ 0.2C / 2.75v
Operating Temp [C] Discharge -20° +60° Higher and lower temperatures are achievable to order.
Charge 0° +45°  
Storage Temp[C] -20° +60° After one month is -10°+45°. After one year is -5°+35° (°C)
Cycle Life (number of cycles) Minimum  300  
Typical  500