This battery is an original battery! My old battery had 1.5 years under his belt and ran gradually, so I ordered this one. Life like the first day, even though the production date is March 2013! The battery was fully discharged which I already prepared worries. However, it seems to have not harmed. I think that Samsung has stopped production of accessories for the Ativ S sometime and you therefore get such "old" batteries. Had the same problem half a year ago with an original replacement battery for Galaxy S2 (June 2011 was introduced in D). Since the date was also dated (2011). Recent production data, there is, therefore, one probably yes, but then the batteries are not possibly original. If you have newer batteries get, even as it is with other give a comment ... I am interested!