Which UN number corresponds to lithium ion cells or batteries?

• A. UN 3480
• B. UN 3090
• C. UN 3091
• D. UN 3481

Answer: (A)

Lithium ion batteries have a specific UN designation to guide how they’re shipped, packaged, and handled. For lithium ion cells or batteries sent by themselves (not inside or with equipment), the UN number to use is 3480. This tells shippers and carriers the exact type of battery and the corresponding safety rules. There’s a related designation, 3481, for lithium ion batteries that are contained in equipment or packed with equipment, which comes with its own packaging and handling requirements. The other UN numbers listed correspond to different chemistry—lithium metal batteries—not lithium ion—so they describe a separate set of regulations. Using the correct UN number ensures proper packaging, labeling, and safety compliance during transport.