Originally Posted by
mklotz
Yes, definitely remove the batteries from any seldom-used tool. Also, if you store the batteries with the tool, ensure that they're in a plastic container of some sort; pharmacy pill bottles work well. Just because the batteries are out of the device doesn't mean they'll never leak. If they do they can make a mess of tool boxes.
Inevitably, you'll still need to clean up after a leak. They're alkaline batteries so their deposits will loosen/dissolve in the presence of acidic solvents. I use vinegar on long cotton swabs...and a miniature hot air gun on lowest setting to evaporate the last traces of moisture before installing new batteries.