It's not lithium that is the problem. It's cheap, unregulated Chinese batteries and circuitry. There are hundreds upon hundreds of millions of lithium batteries in use. The fact you don't hear about this happening more often speaks volumes.
Yup, but why do you wanna harsh the OP's groove...
NiCads were/are just as dangerous. Went on a tour of an auto plant recently, saw battery assembly and storage. Ho Lee Fŭck, rows of batteries stacked 8' high. If one battery cooked off a city block would be taken out by the explosion of the chain reaction. 😱
