I decided to order a replacement battery for my phone but I was looking absolutely take one that is 100% original manufactured by Samsung because the copies are flourishing and not always of the same quality standard as that of Samsung.
That's why I pulled on that sold directly by Amazon.com seller and not a third party vendor to be sure of its origin despite the price twice as high (13 instead of 7).
The reception took place in 5 days in a cardboard envelope without a hitch. The battery was inside only in a clear plastic bag without traditional packaging such as in-store or instructions. This will be my only complaint. Anyway well took me to have selected Amazon because the battery is really original Samsung even if it differs very slightly from the battery that came with my phone 2010 (not surprising or shocking as it happens Samsung and even change the production plant for batteries)
My other fear was that the battery is of ancient manufacture and she waited on a shelf for years before being sold. Well I am pleasantly surprised that it is of recent manufacture December 2013 when I bought it in April 2014 that remains quite reasonable.
Once in my phone and I with a few refills ensuis fully satisfied, I found a smartphone in excellent vitality that keeps me long without load as when I had used in 2010 to out of the box.
I recommend this battery!