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Test/review of UltraFire 14500 750mAh (Black-red)
UltraFire 14500 750mAh (Black-red)
Official specifications:
This is a new series of Ultrafire batteries with protection at the top. The battery have the rated capacity and even a bit more, but it cannot deliver that much current. The cell has a protection circuit or at least something at the front of the battery, but looking at this curve it do not look like the protection tripped. It looks more like the voltage dropped due to overload. Conclusion Ultrafire is usual not a good brand. These cells have the rated capacity, but are not good at delivering current and the protection is doubtful. 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
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