To apply the sham opening is not necessary. The product comes with Plastikverschweißung and Inliegender Instructions and weighs so precisely 85g. The battery contained herein weighs 42 grams, while the original battery that came with the Camera (Sony Alpha 7R) weighs 57g. The same label shows that Sony provides the original label the imitation manufacturer available and can stick to the cheap imitation. This is fraud! I can only advise not to accept the sham / fraud! If the battery pack with about 100g weigh, you can rejoice, for here I would suspect the real battery. But I do not believe that somewhere lies the real battery in this sham. Such a mess! Sham Package !! And for that kind of money !! Grrrr! Extrapolating short, it must be noted that in the Mogelakku, contained not even 75% of the Li-ion mass, so the actual memory mass! In other words: The sham is exactly 26.3% lighter than the original battery! That's serious!