Questions about Samsung Eb-Bn910

Does it make a difference if I have a battery with the number BE-BN910BBE in my Note 4?

If I order a battery today. How long has it been in stock? Can I check how "old" the new battery is?

There are two Galaxy note 4 batteries here in the shop, priced differently in the model name but identical as far as they go? Why? Where is the difference?

So it's supposed to be an original battery, judging by the answers to some of the questions below. But others have been disappointed. I also bought a replacement "original" for about the same price from another seller. Unfortunately the battery I bought was terrible. I reported it to them, and they sent another that was only a bit better, but still not as good as my 2+ year old original. My current original battery dies after 2-3 hours of moderate use. Can I be confident that this battery from digitec will at the very least last twice as long as that?

Is the battery original from Samsung or a cheap copy?

How long do I have to wait after placing my order? Wie lange ist die Lieferfrist? How long does it take for me to get the battery once I purchased it?

Looking for an original replacement battery for Samsung Note Edge EB-BN915BBE