I had a battery leak in a flashlight, but caught it quickly so not a lot of
damage to the aluminum case. I cleaned it with a wire brush and alcohol,
but now the batteries are corroding in two days. Any ideas on how to
neutralize the corrosion?
Mix some baking soda in hot water (as much soda as the water will take
without coming out of suspension) and pour into flashlight battery
compartment and let sit there for 10-30 minutes, then rinse with warm
water and then with a final rinse of alcohol.
Common vinegar does well, but you have to test sample it and see if it will
affect any anodized areas, or others. Then, there is the cleaning of small
interior hard to reach places, usually with a synthetic tube brush that will
get the remainder. Common water is good, and distilled if you're picky.
My experience is that sometimes the affected area may be so deep or
inaccessible and irreparable, it's just best to bury it in the back yard
next to Sparky who got hit by the school bus.
Given your situation, I would simply send the flashlight to the
battery manufacturer to take advantage of their warranty. If the
batteries are a non warranty type, it would be appropriate to simply
discard the corroded item and buy a new, maybe better, one. Your time
has value...use it wisely. Your call.
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