United States Department of Transportation
A State of Charge Analysis of Power Banks (38.5 Wh) Shipped by Air
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2025-10-01
File Language:
English
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Abstract:UN 3480, lithium-ion batteries (batteries not packed with or contained in equipment) are forbidden on passenger carrying aircraft and cannot exceed a 30% state of charge (SoC) when transported on cargo aircraft. Lithium-ion power banks are included in this requirement. In December 2024, an undeclared package containing three lithium-ion power banks experienced a thermal event. The package had been previously shipped from Florida to Kentucky via aircraft. The package was visibly smoking and had a burn hole in the side of the package. The fire eventually self-extinguished. Members from the FAA’s Office of Hazardous Materials Safety (AXH) contacted the FAA’s Fire Safety Branch to aid in analysis of the power banks. Five lithium-ion power banks from packages offered by the same shipper were delivered to the FAA’s Tech Center, where testing was conducted to determine the as-delivered SoC. Test findings determined that all the power banks that were shipped had a SoC exceeding 90%.
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Main Document Checksum:urn:sha-512:56ed2f474453e50e356c4ae346db7588e99a63d5119f2b12755afe2bb61a4a6d57e2716a2d271247f494ba907fa3f1c3066ba4fdc418f3147da8090f3eb02f35
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[PDF
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File Language:
English
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