The reason we don’t see exploding battery attacks more often is not because it’s technically hard, it’s because the erosion of public trust in everyday things isn’t worth it.
edit: after 20 comments, i'm adding a post description here, since most of the commenters so far appear not to be reading the article:
This is about how surprisingly cheap it is (eg $15,000) to buy a complete production line to be able to manufacture batteries with a layer of nearly-undetectable explosives inside of them, which can be triggered by off-the-shelf devices with only their firmware modified.
Every single comment misunderstanding the point.
The batteries are exploding because there's explosives in them. This does make them exploding batteries. They explode because they are partially made with explosives. Please don't "well actually" this.
No this is not a description of something Israel did, it's a hypothetical way to do a similar attack to show how within reach of idiot terrorists it is.
Raising the idea of doing this so everyone is thinking about it is extremely bad for us all. Thanks Israel.