I mistakenly bought the wrong MacBook battery from Amazon and waited too long to return it for a refund. So I'm hoping to offer it here instead at a slight discount. It can get confusing so please, PLEASE make sure it's the right battery for yours. Not all of the Macbook Pros from that year used the same battery so DOUBLE CHECK.

I only took the battery out of the box once, then put it back in the box where it has been ever since.

You can look up the amazon listing if you type in the following:

HUSAN New A1417 Laptop Battery Compatible for MacBook Retina Pro 15" A1398(2012 Early-2013 Version), ME6655LL/A ME664LL/A MC975LL/A MC976LL/A MD831LL/A