Two months later:
Naturally any return or exchange is not possible after two months from Amazon, and that's where it goes bad because the battery is not so miraculous. I can not charge my phone than 2 times with one battery charge Anker, and when I load ... because the mini usb does not fit in the phone. I had to buy a conventional charging cable (the one of origin being failed) to load directly from the mains.
So an expense rather expensive for the time that she served.
one week later.
I have changed the data cable with mini usb, but unnecessary as load Anker definitely refuse any load. Galaxy S3 smartphone plugged into it overnight, loading the morning to 3%.
The result: 34 lost and redemption in an emergency samsung internal battery.
I feel a little pigeonnée ...