Ever wondered how the battery in your phone actually works? Don't say you've never thought about it. Because whatever mad electrochemical voodoo is going on in there matters a great deal.

Why? Because this technology isn't just the basis of your funky little social media machine. It's also behind all modern electric vehicles, most orbiting satellites, and it could potentially hold the key to weaning mankind off its unhappy reliance on fossil fuels.

Armed with this knowledge, you may even be able to extend the life of your battery and keep your precious phone running longer.

Why iPhone Batteries Can't Last Longer

More videos