I knicked a lithium pouch with a box cutter in my bedroom :) I ran with it in my hand to the other end of the house to find the screen door locked! Grabbed the keys and unlocked the door, I threw the battery which was a massive smoke machine by then, before it hit the ground it burst into flames ! That was a close call ! Lesson learnt !So,regardless of battery and application (other than cars) it looks like it would be a good idea that the battery box should be something like a wood stove /oil drum stove with a chimney that vents to the outside for solar and wind battery banks just for precautionary safety... This video just made me redesign my bank in my head over a power wall