Battery fires are a serious deal. Even in a carefully designed situation such as the 787, there can be problems. https://www.scientificamerican.com/article/ho

Battery fires are a serious deal. Even in a carefully designed situation such as the 787, there can be problems. https://www.scientificamerican.com/article/how-lithium-ion-batteries-grounded-the-dreamliner/ https://www.scientificamerican.com/article/how-lithium-ion-b... And keeping batteries around in warehouses has caused a few problems, too. The Morris Illinois battery fire was a pretty big deal.