Well....after 3 years of underwater salt water use....it happened. Salt water got in...not much at all but enough to toast the battery and one of the terminal ends. Called Minelab and it is headed their way today Sad thing is it happened to my buddy Rich also...so his is headed there as well. We are both meticulous when it comes to the cleanness of tge oring and the seating area. So we brainstormed and I thought of a big condom and Rich a balloon so we went with the balloon idea. After trial an error I found after you cut the nect off a ultra thick 16" ballloon....it fits perfectly and will also hold the battery clips down as well. The o-ring will always be the primary seal but this looks like it will contain most if not all water getting even near the battery itself. Thoughts?