In November 2022, the FDNY reported 191 fires, 140 injuries and 6 deaths from lithium-ion fires in the city. Presented by Brad Davis, professional engineer & expert witness, this CLE presentation will provide an overview of the investigation process following a battery failure or a failure of a battery-powered device. Brad will mainly talk about: battery basics, battery types, history of development, what can go wrong and he will finish by presenting four actual case studies with videos.