UltraFire BRC26650 7800mAh (Red)

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Official specifications:
UltraFire%20BRC26650%207800mAh%20(Red)-info

Cheap super high capacity 26650, it is barely necessary to test to give a correct conclusion.

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UltraFire%20BRC26650%207800mAh%20(Red)-Capacity

The two cells I tested have different capacity, the best can reach 2300mAh at 0.2A. They can barely deliver 7A.

UltraFire%20BRC26650%207800mAh%20(Red)-Temp-5.0

UltraFire%20BRC26650%207800mAh%20(Red)-Temp-7.0

Even at maximum load the temperature is not that bad.

UltraFire%20BRC26650%207800mAh%20(Red)-CapacityTimeHours

UltraFire%20BRC26650%207800mAh%20(Red)-CapacityTime

UltraFire%20BRC26650%207800mAh%20(Red)-Energy

UltraFire%20BRC26650%207800mAh%20(Red)-PowerLoadTime

UltraFire%20BRC26650%207800mAh%20(Red)-TripCurrent

UltraFire%20BRC26650%207800mAh%20(Red)-Charge



Conclusion

Different capacity for the two cells, below 1/3 the rated capacity, problems delivering rated current, it is bad cells.



Notes and links

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
Compare to 18650 and other batteries
Compare to 26650 and other batteries

Batteries with ridiculous ratings