Question: are lithium ion batteries hazardous materials?
Answer: Lithium batteries are regulated as a hazardous material under the U.S. Department of Transportation's (DOT's) Hazardous Materials Regulations (HMR; 49 C.F.R., Parts 171-180). ... Lithium batteries must conform to all applicable HMR requirements when offered for transportation or transported by air, highway, rail, or water.