Test/review of FST 21700 4500mAh (Pink)

HKJ

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[size=+3]FST 21700 4500mAh (Pink)[/size]

DSC_1085.jpg


Official specifications:
  • Rated capacity: 4500mAh
  • Minimum capacity: 4400mAh
  • Nominal voltage: 3.6V
  • Standard charge current: 2250mA
  • Maximum charge current: 4400mA
  • Charge cut-off current: 90mA
  • Standard discharge current: 2250mA
  • Maximum discharge current: 13.5A (3C) below 35°C ambient
  • Discharge cut-off voltage: 2.75V
  • Cycle life: 600 cycles to 80%

FST%2021700%204500mAh%20(Pink)-info.png


This is a high capacity 21700 cell.

DSC_1084.jpg


DSC_1086.jpg
DSC_1087.jpg


DSC_1088.jpg

DSC_1089.jpg


FST%2021700%204500mAh%20(Pink)-Capacity.png


The two cells match nicely and it is obvious they are high capacity, not high current (The do already get hot at 15A).

FST%2021700%204500mAh%20(Pink)-Temp-10.0.png


FST%2021700%204500mAh%20(Pink)-Temp-15.0.png


FST%2021700%204500mAh%20(Pink)-Temp-20.0.png


FST%2021700%204500mAh%20(Pink)-CapacityTimeHours.png


FST%2021700%204500mAh%20(Pink)-CapacityTime.png


FST%2021700%204500mAh%20(Pink)-Energy.png


FST%2021700%204500mAh%20(Pink)-PowerLoadTime.png


FST%2021700%204500mAh%20(Pink)-TripCurrent.png


FST%2021700%204500mAh%20(Pink)-Charge.png


Discharge-FST%2021700%204500mAh%20%28Pink%29-pulse-1.0%2010%2010-IR.png




[size=+3]Conclusion[/size]

The two batteries match nicely and have the rated capacity. The performance of the battery is good.



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

The batteries was supplied by Vapcell 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
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries
 
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