Test/review of Keeppower 20700 4250mAh P2070J (Black) 2019

[HKJ]

Keeppower 20700 4250mAh P2070J (Black) 2019







Official specifications:

• Capacity min.: 4250mAh

• Capacity typ.: 4050mAh

• Nominal voltage: 3.70V

• Charge voltage: 4.20+/-0.05V

• Standard discharge cut-off voltage: 2.50V

• Standard charge current: 2000mA

• Charge termination current: 80mA

• Max. continuous discharge current: 10A

This is a protected 20700 cell with fairly good capacity










The two cells matches very fine and capacity drops slowly with higher current. The protection trips after some time at 10A.





















Conclusion

This is a good protected cell.



Notes and links

The batteries was supplied by Keeppower 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