Test/review of BestFire IMR26650 4500mAh (Purple)

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HKJ
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Joined: 05/24/2011 - 12:23
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Location: Copenhagen, Denmark
Test/review of BestFire IMR26650 4500mAh (Purple)

BestFire IMR26650 4500mAh (Purple)
DSC_6789
Official specifications:


  • Battery Capacity (FastTech Tested): 3527.5 mAh
  • Battery Capacity (Mfg Rated): 4500 mAh
  • Battery Chemistry: Li-HP
  • Battery Form Factor: 26650
  • Battery Rated Voltage: 3.7 V
  • Diameter: 26.2 mm
  • Height: 65 mm
  • Product Weight: 87 g

BestFire%20IMR26650%204500mAh%20(Purple)-info
Extreme high current 26650 cells with good capacity according to the rating.
DSC_6787 DSC_6788
DSC_6790 DSC_6791
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BestFire%20IMR26650%204500mAh%20(Purple)-Capacity
Teh two cells are not perfectly matched, but has nearly constant capacity up to 20A.
BestFire%20IMR26650%204500mAh%20(Purple)-Temp-15.0
BestFire%20IMR26650%204500mAh%20(Purple)-Temp-20.0
The cell has an acceptable temperature at 20A.
BestFire%20IMR26650%204500mAh%20(Purple)-Temp-30.0
I forgot to connect the temperature sensor for one of the cells, but the other cells shows that 30A is about maximum continues current when looking at temperature (The cell hits 80°C).
BestFire%20IMR26650%204500mAh%20(Purple)-CapacityTimeHours
BestFire%20IMR26650%204500mAh%20(Purple)-CapacityTime
BestFire%20IMR26650%204500mAh%20(Purple)-Energy
BestFire%20IMR26650%204500mAh%20(Purple)-PowerLoadTime
BestFire%20IMR26650%204500mAh%20(Purple)-TripCurrent
BestFire%20IMR26650%204500mAh%20(Purple)-Charge
Conclusion
The cell is not more than 3500mAh and it can easily deliver 20A, anything above 30A must be done in pulses.
The performance matches other high current 3500mAh 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

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

cera@1967
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Last seen: 3 hours 13 min ago
Joined: 11/19/2013 - 14:45
Posts: 305
Location: Romania

 Oh man , an other "SomethingFire" .., I'm getting tired of this " we know that you are stupid enough to buy it..."

Thank you a lot for your hard work , I'm sure that ALL of us appreciate  that !!! But , as my grandfather was saying :

  - " Remember , all the time , that we are to poor , in order to buy cheap things..!"

Adrian