I bought this as a light to keep under my motorcycle seat. I thought it would look cool after it gets a patina on it, and it does, however the battery corrodes inside it after only a few weeks. I've taken to keeping a AAA in a separate baggy next to it, but combined with the low light output, I find it hard to recommend this light.
trancertongMine was lost for four years in dirt , I found it and it still works great with the original battery! no corrosion at all. Make sure the caps are tight I guess.