Packaging (P903) and Procedures for Sea Freight of Lithium-ion Batteries (UN3480)

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  To summarize, I understand that you intend to ship 2 to 3 lithium-ion batteries (packs) via ocean freight, where each battery is 4000Wh and weighs 40–45kg (assuming 4000Wh is per unit, as it is unclear whether this is the total or per unit). If a lithium-ion battery exceeds 100Wh, it is classified as dangerous goods under the IMDG Code. It is classified as UN3480 Lithium ion batteries and must be packed and transported according to Packing Instruction P903. In other words, P903 is the specific packing instruction number that must be followed when transporting these dangerous goods. According to P903, cells and batteries must be packed to prevent damage caused by movement or placement, and the packaging must meet Packing Group II performance standards. However, for cells or batteries with a total mass of 12kg or more that have a strong, shock-resistant outer case, they should be secured using robust outer packaging (e.g., fully enclosed crates, wooden slat crates) or pallets to prevent accidental movement. Additionally, terminals must be protected to prevent short circuits and must not be subjected to the weight of other loading components. Lastly, please note that when transporting dangerous goods by sea, there is a procedure to undergo a dangerous goods acceptance inspection by the Korea Maritime Dangerous Goods Inspection & Research Institute (KOMDI).

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