Which UN number corresponds to lithium ion batteries that are transported without any equipment?

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

Answer: (A)

Lithium ion batteries have two UN numbers that depend on how they’re shipped. Standalone lithium ion batteries—that is, transported without any equipment—use the UN number for standalone batteries. If the batteries are inside equipment or shipped with equipment, a different UN number is used. The other two numbers listed refer to lithium metal batteries, not lithium ion, so they don’t apply here. Since the question specifies lithium ion batteries transported without any equipment, the correct UN number is 3480.