E-bikes, e-scooters, and hoverboards are often powered by rechargeable lithium-ion batteries. However, the demanding conditions these devices are exposed to increases the risk of damaging the batteries. Damaged batteries may slip into thermal runaway, an uncontrollable, self-heating state that can lead to smoke, fire, toxic off-gassing, or explosion. Learn how UL Standards & Engagement is working to make e-mobility devices safer.