Test/review of UltraFire BRC26650 7800mAh (Red)

HKJ

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[size=+3]UltraFire BRC26650 7800mAh (Red)[/size]

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Official specifications:
  • Model: 26650
  • Type: Rechargeable Li-lithium battery
  • Capacity: 7800mAh
  • Voltage: 3.7V
  • Max Continuous Discharge: 8A
  • Max Peak Discharge: 4A      Something is wrong with Peak/Continuous rating
  • Size: about 66*25*25mm
  • Color: Purple

UltraFire%20BRC26650%207800mAh%20(Red)-info.png


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.png


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.png


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


Even at maximum load the temperature is not that bad.

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


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


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


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


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


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




[size=+3]Conclusion[/size]

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



[size=+3]Notes and links[/size]

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
 
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