LG 18650 HA4 1300mAh (Purple)
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Official specifications:
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Nominal capacity: 1300mAh
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Nominal voltage: 3.70V
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Discharge cut-off voltage: 2.75V
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Standard charge current: 0.75A
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Maximum charge current: 4.0A
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Maximum discharge current: 30A
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Peak discharge current (4sec): 52.5A
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A high current low capacity tool battery.
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The discharge curves are very good, then match nearly perfectly and capacity do not vary much with load, even at 30A
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/LG%2018650%20HA4%201300mAh%20(Purple)-Temp-30.0.png)
/LG%2018650%20HA4%201300mAh%20(Purple)-CapacityTimeHours.png)
/LG%2018650%20HA4%201300mAh%20(Purple)-CapacityTime.png)
/LG%2018650%20HA4%201300mAh%20(Purple)-Energy.png)
/LG%2018650%20HA4%201300mAh%20(Purple)-PowerLoadTime.png)
/LG%2018650%20HA4%201300mAh%20(Purple)-TripCurrent.png)
/LG%2018650%20HA4%201300mAh%20(Purple)-Charge.png)
Conclusion
With the low capacity is is probably a fairly old generation of tool cells, but high current performance is very good
Notes and links
Vapcell told me that I was missing some cells in my comparator and they would be happy to supply them.
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