What is the rule for number of cells or batteries per package under Section I?

• A. Must be exactly the number required for operation
• B. Must not exceed the number required for operation plus two spare sets
• C. No limit
• D. Only one spare set allowed

Answer: (B)

Limiting how many cells or batteries go into one package is about safety and risk management in transport. Section I allows you to include only what the device needs to operate, plus up to two spare sets. In practice, that means you pack the number required for normal use and you may also include up to two complete spare sets with the same device in the same box. This keeps the total energy and potential for a hazardous event in check while still giving you enough spares for operation.

The other ideas would either be too restrictive or too permissive: requiring exactly the operating amount would disallow any spare batteries in the same package; no limit would raise safety concerns; and allowing only one spare set would exceed the stated allowance.