Efest IMR16340 V2 550mAh (red)
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Official specifications:
- Brand /model: IMR 16340-550mAh 3.7V
- spec: Lithium 16340-700mAh 3.7V
- Material: IMR
- Size(mm); 34.05(L)X16.41(D)
- Weight(g): 46 / 48g
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These IMR batteries has around 500mAh at any current draw.
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Very nice curves for the batteries, they has good tracking and capacity is independend of load.
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For 16340 batteries they handle load very well.
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Conclusion
These IMR batteries have very good performance at any load, but the capacity is, of course, not that high.
At the current time I can only rate them acceptable, because Efest is a new company, and the batteries is not from one of the big brands.
Notes and links
The batteries was supplied by Efest 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
Comparison to other LiIon batteries