As we say "I need a double A battery" and write the battery as 'AA Battery', should we use 'a AA battery' or 'an AA battery' when writing about this object? Thought it was interesting and would like people's opinions on it :)
You pretty much always go by pronunciation, not by how it's written. You pronounce it "double-A" so, it's
I needed a AA battery for my remote.
My mom got me a AAA membership for my birthday.