This Technical guidance refers to the limitation at 30% for the transport of Li-ion batteries by air, as described in the ICAO Technical Instruction for the Safe Transport of Dangerous Goods by Air (2015-2016 Edition).
Guidance for the 30% SOC implementation
The new ICAO regulation requires a controlled state of charge (SOC) at 30% or less for the shipment of Li-ion batteries by air (UN 3480). This limitation is not applicable to batteries contained in or packed with equipment (UN 3481). This SOC information shall be available for customers, enforcement agencies, freight forwarders, airlines and other entities upon request….