Hi! Completely stupid question here, I am sure, but I'm completely unable to work this out, so I'd really appreciate some help. I'm trying to get a replacement battery for my macbook pro 7.1, 13". I think its from 2010 but I'm really not sure. I bought it in the UK. I already ordered the wrong model once (duh) so I don't want to do that again. Where can I find out which battery to get? Please help! Thanks in advance!