Ampsplus 21700 5000mAh (Black) 2020

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Official specifications: Ampsplus%2021700%205000mAh%20(Black)%202020-info

A protected high capacity 21700 LiIon cell.

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Ampsplus%2021700%205000mAh%20(Black)%202020-Capacity

The two cells match nicely, capacity drops when drawing higher current.

Ampsplus%2021700%205000mAh%20(Black)%202020-Temp-10.0

Ampsplus%2021700%205000mAh%20(Black)%202020-Temp-15.0

I forgot the temperature sensor on the A cell.

Ampsplus%2021700%205000mAh%20(Black)%202020-CapacityTimeHours

Ampsplus%2021700%205000mAh%20(Black)%202020-CapacityTime

Ampsplus%2021700%205000mAh%20(Black)%202020-Energy

Ampsplus%2021700%205000mAh%20(Black)%202020-PowerLoadTime

Ampsplus%2021700%205000mAh%20(Black)%202020-TripCurrent

The protection circuit trips at a fairly high current, but it did break my 20A discharges.

Ampsplus%2021700%205000mAh%20(Black)%202020-Charge

Discharge-Ampsplus%2021700%205000mAh%20%28Black%29%202020-pulse-1.0%2010%2010-IR



Conclusion

It is a good protected cell for currents below 10A (Preferable a couple of amps below) with lots of capacity.



Notes and links

The batteries was supplied by Ampsplus 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