This is what a small/medium sized Lithium battery looks like when it goes bang. It was brand new, not being charged, not being discharged and it was stored in an air conditioned environment. The amount of soot and gas was incredible and and it took us ages to clean the premises. The acrid smell lingered for months.
It was shipped back to the manufacturer who could not find any cause for the fire. I simply do not trust these batteries anymore.
Per
