zara1269...Typically when you're trying to get adhesive residue off of stuff, the best thing to use is another adhesive. Don't know why, but that usually works. If you're stuck with sticky ick, try some scotch tape or even duct tape rubbed back and forth..should take it right off. Another option, though this MIGHT possibly scratch up the finish on your battery (i don't know what your finish is like) is to try a Mr. Clean Magic Eraser. Those can be found in any grocery or drug store in the cleaning supplies aisle. That's pretty useful when trying to de-stickify stuff, also. Just make sure its not too wet when you use it so you don't have water dripping down your battery. Slightly damp is all you need with the magic eraser. I just used one to get off tons of old peely decals from a 2nd hand bike...worked great.