How To Remove Rust From A Battery Terminal. Removing this erosion is simple and safe to do if you are cautious. One end is a spring which is not so hard to get at but the other end is a flat spiral of wire held in place by the casing so very hard to get at.

First set up a safe place to do the job. Ill try sandpaper and hot water tonight after work wearing gloves. Use a small thin screwdriver and push this between the top of the terminal and the battery holder.
Giving the remote a quick clean before storing it can help to remove any leftover battery corrosion that may become a bigger problem over time.
Protect yourself and your work surface. It can be tricky sometimes to do this if they are severely corroded as bits can break off and the grooves in the battery holder can get clogged-up. Leave it there for some time and then with the help of an aluminum foil remove all the remains of the corrosion. Just make an appropriate-sized wedge of aluminum foil and insert it in the gap between the battery and the terminal.
