Although I was suspicious from the outset that the battery - because of the low price - is an original battery, but I wanted to try it.
Since the battery but did not satisfy me, I called for a return shipping label, and sent him on "The trading house" back, but I got - despite some mails on my part - no feedback from the dealer "The trading house", let alone refunded my money.
After I contacted Amazon and the dealer "The trading house" - despite pressure from Amazon's - still was no response, I received the amount of Amazon paid by AZ Guarantee back (not by the dealer "The trading house"!).
I advise buying this absolutely by a battery, especially at this dealer, from!