I left my Ego trimmer out in yard prior to about a week's worth of heavy rain. :( I mean, it was raining consistently enough for about 5 days that all rivers and streams were well out of their banks and many in our area had flooded basements. Only at the end of all that did I realize it was sitting in the backyard, unprotected. Based on where it was, there shouldn't have been water "pooling" under it, etc., and when I picked it up and was taking the battery off, the green light came on. I wiped down the trimmer and battery separately, and are storing both upright in a dry place so that any remaining water can drain....any other suggestions? I'm not expecting much, but I figure there's still a CHANCE!