Lithium is dangerous

[0:00]This is just a regular Energizer lithium battery, and what's inside of it honestly kind of scares me. Just for fun though, I'm going to open it up, and I've already made a little cut in the outer shell. Opening batteries like this is dangerous, and it's almost always a huge pain. But I was eventually able to pop off its shell. Now, I can unroll its insides and reveal the thing that scares me. It honestly doesn't look like much, but it's a bunch of lithium metal, and it's extremely reactive. The metal itself technically isn't what scares me though, and it's what can happen if it's added to water. Normally, it just fizzles a bunch, and maybe lights on fire. In this foil form from the battery though, it can sometimes be a bit more reactive. I personally had to discover this the hard way, and I'm very lucky it all turned out okay.