Windyfire 18650 2500mAh (Cyan)



Official specifications:

• Nominal capacity: 2500mAh
• Nominal voltage: 3.7V
• Discharge cut-off voltage: 2.5V
• Standard charge: 4.2V 1000mA
• Maximum charge current: 4000mA
• Continuous discharge current: 30A
• Pulse discharge current: 35A
• Initial impedance max.: 20mOhm
• Cycle life: 500cycle to 60%
• Operating temperature: Charging, 0°C ~ 45°C, Discharging, -20°C~60°C
• Storage temperature: -20°c -35°c
• Weight: 45g

Windyfire do also have one of the very popular high current 2500mAh cells.










The discharge curves tracks nicely and as nearly always the specifications are a bit optimistic.















Conclusion

This is a decent high current battery, especially below 20A.



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Compare to 18650 and other batteries