I had ordered the battery in Online2013. Unfortunately, the battery worked on my Samsung i8350 not, as well as the supplied ended spare battery. The phone does not recognize the battery and pointed to a question mark. Comparison with a purchased commercially battery then shows also optically pure subtle differences. This battery then worked immediately.
The above trader has sought but not roll over. The replacement came only after consultation. Similarly, reimbursement of postage for the return of the 1st battery. After returning the spare batteries just the price of the battery has been reimbursed, not the postage. If I count all the time for returning and emails, then it was really a disaster.