I just got my 1st real smartphone; a Motorola Droid Turbo, which has a powerful but non-replacable battery. My last phone was a cheap Kyocera, which I'd loaned to a friend who kinda tossed it out of their car. It was very broken, but the fractured screen still lit up like a psychodelic stamp. It wasn't til I much later opened it up that I noticed the tiny flatpack lithium battery has swollen up to the size of a jumbo grape. Yesterday I saw a BBC article about an Aussie bicyclist who carried his iphone in the same pocket I generally use. His phone basically turned into a piece of smoldering lava after he fell, and it gave him a large, hand-sized 3rd degree burn on the back of his thigh. The burn certainly looks serious enough in the photo, you can see it here: http://www.bbc.com/news/technology-36955531 Not to be paranoid, but I started thinking about all today's lithium batteries that eventually will be left in boxes, drawers, storage spaces, etc inside old phones, toy drones, even electric cars like the Tesla. And after the hoverboard fiasco, various agencies have been considering various bans on shipping them anywhere, which makes recycling more difficult. Right now, LiPo batteries are used primarily in high-end gadgets, like expensive smartphones & drones. But if it's true that the $99 dollar phone is coming, I don't see any way that Quality Control won't take a huge hit- and being hit seems to be what causes these batteries to go blooie. It isn't an Android issue per se, but these batteries are inside most all our phones which are lying around our fairly flammable homes, cars, etc. That photo made me take it a bit more seriously, and realize there's a lot I don't know about modern batteries. Comments?