Today I have by accident thrown a AAA battery into a bucket of water. I fished it out of the water immediately (within 20 seconds or so) and nothing notable had happened and the battery is still full according to a battery test device.
Cats Scratching Ears with Parasites. If this is not the issue, then it may be related to parasites alone. Check your cat's ears for signs of ticks, fleas, and mites. These parasites can cause obsessive scratching, as the cat makes a desperate effort to relieve pain and discomfort. If your cat is not allergic, try using natural tick or flea repellents (or mite repellent) if that seems to be the issue.
My roommate and I were just discussing how there's nothing that we find more unattractive (besides dirt and body odor/bad breath) than ear wax in someone's ear. I can't believe that your ear itches because of a lack of wax and that Q-tips cause a temporary fix to the itch but in the long run remove the wax that prevents the itch in the first place... Ironic does not even begin to describe this!