Yes - even Lithium Ion batteries which are practically dead may combust if the pouch is pierced (in pouch based ones of course). I recall vaguely shipping stand

Yes - even Lithium Ion batteries which are practically dead may combust if the pouch is pierced (in pouch based ones of course). I recall vaguely shipping standard operating procedure of around 10% charge for bulk batteries and 50% charge for electronics which contain them but don't quote me on those numbers. But either way more energy means bigger, more, and longer lasting flames.