Ok I bought a Lot of 8 ultrafire 16340s off ebay. they are genuine because the bottom is stamped ultrafire. I charge them up and put them in my ITP a1 eos ss and the battery life is beyond deplorable. The first battery lasted about 3 mins.. and it instantly goes out i charged it back up to get 3 mins of life again. several others had life around 5 mins. the best I got was 17 mins on one cell. I thought Ultrafire cells were good ones.. are these defective or is ultrafire batteries crappy? ALSO will I get longer runtime off a rechargeable or 123A Primary?? If ultrafire sucks, then what brand of battery should I try?
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