As Chris said, Ebay (as well as Amazon) are not good places to look for
batteries. Only buy
batteries from a reputable supplier as there are many counterfeit batteries being sold. Here are several reputable battery suppliers in the US.
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RTD Vapor
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Illumination Supply
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Lighthound
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Orbtronics
Additionally, any 18650 battery you see marked at anything higher than 30A is most likely a pulse/burst rate, not continuous discharge rate. If you are looking for a battery for vaping check out Baditudes blog:
Battery Basics for Mods
- choose the safest and right battery for your applications here. Includes a list of name brand, high-drain, safe-chemistry batteries with mAh & amp ratings in 18350, 18490/18500, and 18650 sizes.