[HKJ]

[Vapcell IFR32700 6500mAh G65 (Blue) 2020



Official specifications:

• Model: IFR32700 G65 6500mah 30A
• Size: 32.1*70.5mm
• Nominal voltage: 3.20V
• End-of-charge voltage: 3.65V
• End-of-discharge Voltage: 2.0V
• Typical Capacity: 6500mAh (0.2C discharge)
• Min capacity: 6400mAh (0.2C discharge)
• Weight: Max: 150g
• Internal resistance: Max:8mOhm AC 1kHz
• Standard Charge: 6000mA,CCCV 50mA cut-off
• Quick Charge Current: 30000mA
• Max Continuous Discharge Current: 30A
• Max Pulse Discharge Current: 55A for 5 seconds

Fairly large (They are 5mm longer than 32650) LiFePO4 batteries that can deliver a lot of current.











The two batteries matches very well. Being LiFePO4 the discharge curve is very flat, until the battery is nearly empty. The batteries can also easily handle the 30A test current and without any drop in capacity.

















The charger curve for LiFePO4 is significantly different from LiIon.




[Conclusion

Need a lot of current and stable voltage at around 3V, then these batteries are very good.



[Notes and links

The batteries was supplied by Vapcell for review.

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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries