OMG. I just had an exploding lithium ion battery adventure...so today is my daughter's birthday and I went to the large copy/print shop she owns with her present. I made her some jewelry, and had an extra cheap plated silver chain for the necklace. In a pocket of my purse I carry an extra batt for my provari. So anyway, I tossed the extra chain in my purse. A few minutes later there's a POP and sizzling SMOKE pouring from my purse. Her business has lots of expensive copy machines, not to mention all the paper. Her 3 employees ran around opening doors and getting a couple fans going. Had the smoke alarm sprinklers come on it would have been horrible. OMG. Got my purse outside and finally soaked it with enough water to stop the crazy smoke. Home now, still shaking. Hubby says silver is a GREAT conductor