The selection and repurposing (including 1 design, operation and maintenance) of second-life electric vehicle batteries in energy storage systems with voltage levels of 10 kV and below is described in this recommended practice. Various technical indexes of batteries and equipment are assessed in different stages of engineering to evaluate the system's efficiency, safety, and economic aspects.

This recommended practice describes the selection and repurposing (including design, operation and maintenance) of second-life electric vehicle batteries in energy storage systems with voltage levels of 10kV and below. Various technical indexes of batteries and equipment are assessed in different stages of engineering to evaluate the system efficiency, safety and economic aspects.

This recommended practice identifies the technical requirements for second-life electric vehicle batteries, including original design and data interaction in their service life in cars, to provide battery status assessment indicators and methods in the repurposing, system integration and technical essentials of key equipment, management requirements for operation, maintenance and monitoring, and overall technical consideration for system safety in an energy storage system. Availability of this information is intended to improve safety and promote efficient and economic applications of the energy storage technology using second-life electric vehicle batteries in scenarios such as backup power supply, peak-load shifting and stabilization of fluctuations in low-voltage power distribution systems.