This part of ISO 12405 specifies test procedures for lithium-ion battery packs and systems for use in electrically propelled road vehicles. The specified test procedures enable the determination of the essential characteristics of performance, reliability and abuse of lithium-ion battery packs and systems. They assist the user of this part of ISO 12405 to compare the test results achieved for different battery packs or systems. Therefore, this part of ISO 12405 specifies standard test procedures for basic characteristics of performance, reliability and abuse of lithium-ion battery packs and systems. This part of ISO 12405 enables the setting up of a dedicated test plan for an individual battery pack or system subject to agreement between the 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 this part of ISO 12405 to configure a dedicated test plan. This part of ISO 12405 specifies tests for high-power battery packs and systems. NOTE 1 Typical applications for high-power battery packs and systems are hybrid electric vehicles (HEVs) and fuel cell vehicles (FCVs). NOTE 2 Testing on cell level is specified in IEC 62660-1 and IEC 62660-2.