Keep track of the approximate location of the old battery adhesive. It may be helpful to take a quick photo to reference later.

Begin by removing all of the old adhesive and residue from the adhesion surfaces in the battery well.

You can pull the adhesive off with tweezers or your fingers, roll it up on the tip of a spudger with a roll-and-pull motion, or scrape it off with the flat end of a spudger.