Batteries are everywhere — they’re in our phones, our computers, our cars, our toys. But how do they work?
To find out, we talk to a scientist who’s making really big batteries to store renewable energy, another who’s working on really small ones to power our phones, and we play in a park with a dog. All that, plus the mystery sound!
Want to hear more about electricity? Listen to the rest of our Electricity series:
Part 1: Shocking! The science of static
Brains On! is an award-winning audio show for kids and families from American Public Media.