ISO 12405 specifes test procedures for lithium-ion battery packs and systems to be used in electrically propelled road vehicles.The specifed test procedures enable the user of ISO 12405 to determine the essential characteristics of performance, reliability and abuse of lithium-ion battery packs and systems. They also assist the user in comparing the test results achieved for different battery packs or systems.Therefore the objective of ISO 12405 is to specify standard test procedures for the basic characteristics of performance, reliability and abuse of lithium-ion battery packs and systems.ISO 12405 enables the setting up of a dedicated test plan for an individual battery pack or system subject to an agreement between customer and supplier. If required, the relevant test procedures and/or test conditions of lithium-ion battery packs and systems can be selected from the standard tests provided in ISO 12405 to confgure a dedicated test plan.This part of ISO 12405 specifes the tests for high-energy battery packs and systems.NOTE 1 Typical applications for high-energy battery packs and systems are battery electric vehicles (BEV) and plug-in hybrid electric vehicles (PHEV).NOTE 2 Testing on cell level is specifed in IEC 62660-1 and IEC 62660-2.