Electric vehicle batteries don't last forever. Sure, they can be charged up, drained and charged again, but at some point they just won't get the job done anymore. Automakers estimate that advanced batteries will provide about ten years of serviceable life in vehicles. So what happens to that hunk of lithium in your vehicle after it's retired from the intended duties? It gets a second chance in one of several industries lining up to spring new life into that old battery.