I had my battery and charger in a zip lock bag while traveling. My eliquid was in yet another zip lock bag, but I guess on the return trip I screwed up and put them in the same bag. Long story short, both battery and charger got eliquid all over them and inside them. I put them both in a plastic cup with some isopropyl alcohol, let them sit for about half an hour, and then swirled the cup around vigorously. I left them both in a paper plate in the sun to dry, with the charger also wrapped in a towel. After a day a nice small puddle of eliquid had leaked out of the battery, but I just charged it up and it seems fine. BTW, it's a DSE901 battery and the stock charger.