You seem to be using an older version of Internet Explorer. This site requires Internet Explorer 8 or higher. Update your browser here today to fully enjoy all the marvels of this site.
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.