UltraFire 18350 1100mAh (Black-red)
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Official specifications:
- Battery Capacity (Mfg Rated): 1100 mAh
- Battery Chemistry: Li-Ion
- Battery Feature: Rechargeable
- Battery Form Factor: BRC 18350
- Battery Rated Voltage: 3.7 V
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The protected 18350 from Ultrafire in their new style.
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Discharge curves looks very good, the cells tracks nicely and can deliver 7A, at 10A the voltage is a bit low.
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Conclusion
It looks like Ultrafire has got their hands on the best 18350 batteries around and then added a protection. The protection will increase voltage drop at high current.
If they keep making the battery this way it will be a good battery.
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
Comparison to other LiIon batteries