Keeppower 18500 1500mAh (Black)


DSC_1536

Official specifications:
Keeppower%2018500%201500mAh%20(Black)-info

This battery is a 18500 battery, i.e. about 15 mm shorter than a 18650. The smaller size means considerable less capacity and less maximum current. This battery is only 1500mAh and does hold the capacity, even at a 5A load (Probably because the cell used is 1600mAh).
The internal resistance is higher than a 18650, but that is expected from a smaller battery.

DSC_1535

DSC_1537 DSC_1538
DSC_1539
DSC_1540

Keeppower%2018500%201500mAh%20(Black)-Capacity

Keeppower%2018500%201500mAh%20(Black)-CapacityTimeHours

Keeppower%2018500%201500mAh%20(Black)-CapacityTime

Keeppower%2018500%201500mAh%20(Black)-Energy

Keeppower%2018500%201500mAh%20(Black)-PowerLoadTime

Keeppower%2018500%201500mAh%20(Black)-TripCurrent

For a battery with 3A rating the trip current is a bit high. The actual resistance in the operating range is slightly lower than my measurement shows. My measurement is calculated at the high load current and there the red trace drops extra fast.

Keeppower%2018500%201500mAh%20(Black)-Charge



Conclusion

There is not much to say about this battery, with a Sanyo cell inside, I will call it a very good battery.



Notes and links

Keeppower is a OEM manufacturer, i.e. many of the batteries they produce is sold with other names on them.

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