Hello, I just bought an "Original Sony NH-14WM" akku in retail package from a German online shop (not ebay). Two things are especially strange. On the back side of the akku is printed "USE ONLY WITH SONY BATTERY CHARGING SYSTEM DESIGNATED "FOR NH-10WM" and the fact that the retail package was already open. Looking at the NH-14WM I suspect that the akku is not original but fake. Please have a look at the photos and give me your opinion. Many thanks in advance.