4Greer 18650 3100mAh (Black)


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Official specifications:


4Greer%2018650%203100mAh%20(Black)-info

The cell used can be discharged down to 2.5 volt, in my test I only discharges to 2.8 volt, i.e. I do not measure the full capacity. But then, not all lights will be able to use the full capacity.

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The packing is not very interesting, because the manufacturer does not have retail sale.

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4Greer%2018650%203100mAh%20(Black)-Capacity

4Greer%2018650%203100mAh%20(Black)-CapacityTimeHours

4Greer%2018650%203100mAh%20(Black)-CapacityTime

4Greer%2018650%203100mAh%20(Black)-Energy

4Greer%2018650%203100mAh%20(Black)-PowerLoadTime

4Greer%2018650%203100mAh%20(Black)-TripCurrent

4Greer%2018650%203100mAh%20(Black)-Charge



Conclusion

This battery uses a good cell, this secures many things:
The PCB current limit is placed about 30% above the cell specification, this is a good value.
All in all a very good battery.



Notes and links

The batteries was supplied by 4Greer 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