Second life involves the re-use and re-purposing of battery packs after their first use. Enabling second life can improve the circularity of critical materials, reduce energy consumption and make manufacturing processes more sustainable.
With the rapid growth of the electric vehicle (EV) market, there is an increasing supply of used batteries that no longer meet the criteria for use in EVs. However, the cells of these batteries still meet the standards for less demanding applications, such as energy storage.
Adapted from Drax.com
Lifetime provides technology that can be used to group cells with similar capacities together. Cells can be grouped into different bands within 5% charge capacity of each other. Grouping of cells is key for building efficient second life packs, as one weak cell could compromise the entire battery’s performance.