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Help Identify 18650 battery

I got this battery, only marking on this battery is "ZY18650/020/131110/01"

i have done a discharge test with a I max B6 4.2v to 3v gave me 2529mAh capacity.

In my opinion it looks very similar in cap design to AZO cells ,but remind me of a FP 18650 1800mAh with the etching of a sanyo cell. I've gotten results for various Ultrafire cells ,but I've never tested an Ultrafire cell above 1952mAh.

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