Since 2025, U.S. Customs and Border Protection has noticeably tightened document review for battery-powered goods. In practice most rejections are not caused by non-compliant cargo but by contradictions between documents — an MSDS battery type that does not match the invoice, or a UN38.3 report covering a different model than the one shipped.
We recommend a battery document checklist before dispatch: confirm the UN38.3 report covers the shipped model and is still valid, the MSDS is the latest revision with a complete Section 14, state of charge stays at or below 30% for air freight, and cartons carry the correct battery marks and labels. Only book the warehouse slot once all four are ticked.
For recurring models, maintain these documents as a template library so each shipment only needs batch and quantity updates — this cuts document turnaround substantially. Whenever a model is revised, update the report rather than reusing the old one.
