Lishen 21700 4000mAh LR2170LA (Purple)

DSC_4775

Official specifications: Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-info

This is a high current 21700 cell.

DSC_4777 DSC_4776

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DSC_4779

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-Capacity

The two cells match fairly well and maintain fairly stable capacity even at high loads, but the cell get hot at 30A (My holder melted).

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-Temp-15.0

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-Temp-20.0

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-Temp-30.0

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-CapacityTimeHours

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-CapacityTime

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-Energy

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-PowerLoadTime

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-TripCurrent

Lishen%2021700%204000mAh%20LR2170LA%20(Purple)-Charge

Discharge-Lishen%2021700%204000mAh%20LR2170LA%20%28Purple%29-pulse-1.0%2010%2010-IR



Conclusion

The cells looks good, but I sort of doubts the continuous discharge rate of 45A, it will probably always be stopped on the 80C cut-off before the cell is empty.



Notes and links

The batteries was supplied by a reader 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