I bought 4 of these now "100% original batteries". Whether they really are original or not, I'll write when I have an answer of Samsung. The fact is that all 4 batteries are not in the capacity of the approach comes with the phone's battery. This raises the question: Fake? B / C-Ware? Actually, you have already at the price (I zw 7.30 and 11, -. Euro for the batteries paid) are suspicious ... In any event, the selling of me, do not keep up with the Orignal. I would be willing 40, - Euro to be paid for the battery, if you really find a stock. Although obtained functioning batteries, but need almost two to compensate for an original. And as Samsung, it keeps with the guarantee if such a part time explodes is another matter.
Conclusion: Recommended as an emergency battery. When not spare definitely!