Does the spring at the bottom of the light look stuck? One last thought-try placing it on the charging base & turn it on to see if turns on with power from the base. Olight has a thread on CPF, maybe ask them for any ideas, and at the very worst, if you have to send it back they have been very good to me. Sorry I don't have any other ideas, but thankfully there are a lot of others here who may be able to help. I have all of the "R" series, that I am building a custom base for so that as I head out the door I can always just "grab & go". Another idea on my list is a modified tailcap for my titanium S30 so I can "base" charge it as well...