I haven't been so lucky with my leds. Most of the 'waterresistant' photons or gerber led i've had were not so.
The lights didn't die, the cr2016 batteries did. They leaked out this black goop and made a mess of the inside. The led worked fine still with new batteries though...
Hence the need to look for a better solution..... <img src="/images/graemlins/grin.gif" alt="" />