From the humble AAs we stick into the back of our TV remote controls, to our phones, laptops, and increasingly, our cars, batteries are now everywhere to be found. We hear from someone who spends more time than most of us examining these magical capsules that power our lives, and looks at what exciting new ways we could use them.

Ethical and environmental battery brands: https://www.ethicalconsumer.org/energy/shopping-guide/batteries