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Waterproof Your Batteries in Seconds! - Instructables.com

Dec 09, 2007 · All you need is a waterproof coating material. There are a wide variety of products which work well: at your home improvement store there are lots of options such as urethane waterproof coatings, rubberized paints, etc. from an electronics supply story you can find silicone and urethane conformal coatings which also work very well.

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