But lithium batteries are becoming one of the biggest fire risks in homes, warehouses, and vehicles today, and the numbers prove it. So which lithium batteries are dangerous, and which ones are simply doing their job quietly in a phone or laptop? Why Do Dangerous Lithium Batteries Catch Fire? How to Reduce Lithium Battery Fire RisksMost lithium battery fires trace back to a handful of preventable habits, which is genuinely good news. How Should Dangerous Lithium Batteries Be Disposed of Safely?