FST 21700 4500mAh (Pink)
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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%
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This is a high capacity 21700 cell.
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The two cells match nicely and it is obvious they are high capacity, not high current (The do already get hot at 15A).
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/FST%2021700%204500mAh%20(Pink)-Temp-15.0.png)
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/FST%2021700%204500mAh%20(Pink)-CapacityTimeHours.png)
/FST%2021700%204500mAh%20(Pink)-CapacityTime.png)
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/FST%2021700%204500mAh%20(Pink)-PowerLoadTime.png)
/FST%2021700%204500mAh%20(Pink)-TripCurrent.png)
/FST%2021700%204500mAh%20(Pink)-Charge.png)
Conclusion
The two batteries match nicely and have the rated capacity. The performance of the battery is good.
Notes and links
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