If your CR123s are expired, I'd recommend disposing of them in the proper manner. I don't think I've read a single account of an explosion, vent with flame, or any other mishap occurring with expired CR123s in the decade I've been on CPF. Then again, a community full of enthusiasts means that such cells rarely if ever come even close to their 10-years shelf life just sitting around. Still, I think of lithium batteries as having a pet dragon around. They can be docile. Even dependable. But you never forget their ability to belch toxic flames under certain circumstances. No reason to take chances with expired cells.
Thanks - wish I had found/read this thread before I bought all those cells. At least I'm only out .50 cents a cell.
Do you guys have any recommendations on a decent quality but lower cost single CR123 LED flashlight to use those old cells up with?