However, with it no surprise that Samsung is "pure sugar":
Samsung carton in which we find a good solid plastic housing that contains the battery.
No risk for the smartphone and identical to the original self.
I have already bought (for S2 and S3 for example) the "compatible" batteries.
It is clear that autonomy is not the same size and sometimes a little rough.
In short, although the Samsung Galaxy S5 battery is significantly more expensive than "the other pseudo equivalent" I sincerely believe that in the end the value for money is much better!