Understanding Lithium Battery Packing Instructions

Shipping lithium batteries requires strict compliance with IATA and DOT regulations. One of the most common areas of confusion is knowing when and how to mark cartons with the correct Packing Instruction (PI) number.

PI 966 vs PI 967: What Is the Difference?

PI 966 applies to lithium-ion batteries packed with equipment. This means the battery is inside the same box as the device it powers, but is not installed in the device.

PI 967 applies to lithium-ion batteries contained in equipment. This means the battery is already installed inside the device when shipped.

Section II: When Does It Apply?

Section II of both PI 966 and PI 967 applies when the batteries meet these criteria:

• Each cell does not exceed 20 Wh
• Each battery does not exceed 100 Wh
• The package contains no more than the allowed quantity
• The shipment meets the weight limits per package

What Must Be Written on the Carton?

When Section II applies, you must write the applicable PI number on the outside of the carton:

• PI 966 II for lithium-ion batteries packed with equipment
• PI 967 II for lithium-ion batteries contained in equipment

Additionally, you must:

1. Apply the lithium battery handling label (Class 9A label or the updated lithium battery mark)
2. Include a document inside the package indicating it contains lithium batteries
3. Ensure the package is rigid and prevents movement of contents

Common Mistakes to Avoid

• Mixing up PI 966 and PI 967
• Forgetting to check watt-hour ratings on the battery
• Not applying the correct label alongside the PI marking
• Assuming all lithium batteries ship the same way

How BoxIntel OS Helps

The Battery Validator in BoxIntel OS walks you through these decisions step by step. Enter the battery type, watt-hour rating, and packing method, and it tells you exactly which PI applies, what labels are required, and whether any special packaging is needed.

No more guessing. No more compliance risks.