Yes, they are but I am saying the cells are in their own mini compartments. Think of like a ship has compartments to keep the entire thing from flooding if it

Yes, they are but I am saying the cells are in their own mini compartments. Think of like a ship has compartments to keep the entire thing from flooding if it is breached. At least that is how I have understood it to be. Obviously this doesn't prevent heat from spreading and could still have a runaway chain reaction like in this case but it does maybe give more time to warn you.