The rechargeable batteries in your laptop, your cell phone, your headphones: all of these can be used to power your life and take you off the grid. DIY Powerwalls – rechargeable lithium-ion battery installations, made from recycled batteries – are the future of power, whether you know it or not. We visited Jehu Garcia, a DIY Powerwall builder and enthusiast, and the folks at EV West in Southern California as well as the University of Michigan Battery Lab to see just how DIY Powerwalls can power your home, your car, and even the rest of your neighborhood.
