Tenergy 2600mAh protected 18650: two different types?

Yucca Patrol

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Mar 5, 2008
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When I received my Zebralight H60 from 4-sevens, it came with two Tenergy 2600mAh protected 18650's and a charger. These work great in the H60 although they are a rather tight fit.

I then purchased another 4 pack of these same batteries from all-battery at a very good price, but just discovered that the new ones are a bit different.

The batteries that came from 4-sevens had a noticeably raised "button" on top but the ones I just received from all-battery have a button that is better described as flat than raised.

Hopefully it won't be an issue for the lights I use, but I had hoped that these were all the same with the same.

Has anyone else noticed two different types of these batteries?

I chose them because they are supposed to have a very good protection circuit (important to me if I am going to be wearing a lithium ion battery on my forehead), but would have preferred that they all had the raised button.
 
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