battery authenticity?

I ordered a bunch of samsung 30Qs from China. Upon arrival, they look like this:



Are these authentic? There is no other writing/labeling other than that homebrew sticker label. In reality, I don't even care about the brand necessarily, as long as the capacity, cycle life, and discharge rates are the same.

These Chinese sellers have to put a sticker on the cell with the capacity and voltage for shipping compliance reasons. Peel the sticker off and see the samsung markings. Other than that, sure it could still be a fake that is why you need to test the capacity and resistance.

Oh crap. You're right! There are samsung markings underneath. Can anybody recommend a cheap capacity tester? I mean a quick google resulted this: http://www.ebay.com/itm/Constant-Cu...e-Capacity-Tester-9-99A-60W-30V-/132043334921

graph the discharge curve and compare against the ones here: lygte-info.dk

A quick test would be to just pop one in your mouth. I mean, if they're lying about the good taste, they're probably lying about the electrical specs too.