Dozens of electric vehicles are scheduled to debut in the next few years and over 300 million electric vehicles are expected to be on the world’s roads by 2030. The lifetime for an EV battery is estimated to be 12 to 15 years in moderate climates, but that doesn't mean the batteries end up in landfills when they die. There are a number of companies working on lithium-ion battery recycling including Li-Cycle, Redwood Materials and Spiers New Technologies, or SNT. SNT focuses on refurbishing, repurposng and recycling EV batteries to give them a second life. It already works with Volvo, Porsche, GM, Ford and others to take old batteries and make them new again. The estimated reuse lifetime of an EV battery can range anywhere from five to 30 years. By 2050, the demand for graphite, lithium and cobalt is expected to increase by 500 percent because of the battery boom, so extending the life of an EV battery can reduce the need for critical minerals and new mines. CNBC visited SNT at its headquarters in Oklahoma City to see how an EV battery is given a second life. Chapters: 0:00 - Introduction 01:25 - What happens to old EV batteries? 04:18 - Business model 11:00 - Can mining be replaced? Produced, Shot and Edited by: Sydney Boyo Additional Camera: Magdalena Petrova, Liam Mays Senior Producer: Katie Tarasov Supervising Producer: Jeniece Pettitt Animator: Mallory Brangan Additional Footage: Spiers New Technologies » Subscribe to CNBC: https://cnb.cx/SubscribeCNBC » Subscribe to CNBC TV: https://cnb.cx/SubscribeCNBCtelevision About CNBC: From 'Wall Street' to 'Main Street' to award winning original documentaries and Reality TV series, CNBC has you covered. Experience special sneak peeks of your favorite shows, exclusive video and more. Connect with CNBC News Online Get the latest news: https://www.cnbc.com/ Follow CNBC on LinkedIn: https://cnb.cx/LinkedInCNBC Follow CNBC News on Facebook: https://cnb.cx/LikeCNBC Follow CNBC News on Twitter: https://cnb.cx/FollowCNBC Follow CNBC News on Instagram: https://cnb.cx/InstagramCNBC #CNBC Where Do EV Batteries Go When They Die?