The Lithium Battery Shipment That Grew Overnight
A freight forwarder in Hong Kong prepares a consignment of 240 lithium-ion battery packs (UN3480, Class 9) for air cargo. Each pack weighs 4.2 kg and is packed 4 per fibreboard box, giving 60 boxes. The shipper declares the goods under Section IA of the relevant packing instruction and marks each box with the lithium battery mark. On the day of departure, the warehouse reports that 12 boxes were repacked into larger cartons to save space, so four original boxes now sit inside each of 3 cartons. The shipper argues the total net quantity is unchanged, so the original declaration and marks remain valid. The airline's dangerous goods acceptance officer is asked to decide whether to accept the shipment as presented.
1. Identify the classification and packing issues raised by repacking the batteries into outer cartons, and state whether the shipment as presented can be accepted.
Read the worked answer
The repacking changes the packaging configuration, not just the volume. UN3480 cells and batteries are assigned to a specific packing instruction, and compliance is assessed against the package actually presented, not the original design.
Key points:
- Package integrity and specification. The larger cartons were not tested or marked against the applicable packing instruction for the net quantity now inside them. A package must be of a design type tested for its contents and quantity; combining four tested boxes into an untested carton breaks that link.
- Net quantity per package limits. The officer must recalculate the net lithium content or watt-hour rating per completed package. If the consolidated carton exceeds the per-package limit for the section used, the shipment no longer qualifies under that section.
- Marking and labelling. The lithium battery mark and any Class 9 hazard label must reflect the package as presented. Marks on the inner boxes are not visible and do not satisfy the requirement for the outer package.
- Documentation consistency. The air waybill and shipper's declaration must describe the packages actually tendered. A declaration describing 60 boxes is now inaccurate.
Decision: Do not accept as presented. The consignment must be repacked into compliant packages, re-marked, and the declaration corrected before acceptance. The total net quantity being unchanged is irrelevant to package-level compliance.
2. The shipper offers to simply add the lithium battery mark to the three new cartons and proceed. Explain why this does not cure the problem.
Read the worked answer
Marking is a communication layer that sits on top of a compliant package; it cannot substitute for one. Adding the lithium battery mark to the three cartons addresses only visibility.
The underlying failures remain:
- The cartons have no demonstrated drop, stack, or compression performance for the combined mass and configuration.
- The per-package net quantity may exceed the limit for the section declared, which is a substantive eligibility question, not a labelling one.
- Inner packaging and cushioning arrangements were designed for four packs in a fibreboard box, not sixteen packs loose in a larger carton; movement and terminal damage risk rise.
- The shipper's declaration still does not match the tender.
Acceptance is a verification act. The officer should require evidence that the new outer packaging is a tested design for the contents and quantity, or require the original boxes to be shipped as designed. Only after that should marks and labels be checked. Proceeding on the basis of added marks would transfer an unresolved packaging non-compliance into the aircraft.