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.
I’m saving this. Not because I want to make bombs, but if it really is that easy to make lithium batteries then knowing about the process will be beneficial someday. It’s hard to find information about how rechargeable batteries work. You probably couldn’t even make a lead acid battery from raw materials using just information on the internet.