As of 2020, the world's biggest lithium-ion battery is hooked up to the Southern California power grid and can provide enough power for about 250,000 homes. But it's actually not the biggest battery in the world: a pair of lakes are. How can lakes be a battery? Explore how inventors are rethinking what a battery can be, and how these surprising solutions could help us achieve a sustainable future. [Written by Elizabeth Cox and George Zaidan, directed by Lisa LaBracio, narrated by Jack Cutmore-Scott, music by André Aires].

 TED-Ed: The world's biggest battery looks nothing like a battery

The world's biggest battery looks nothing like a battery

Lakes transformed into a colossal battery, storing energy via water's gravitational potential, exemplify innovative green solutions.

Bio-batteries, powered by bacteria and activated by spit, mark a stride towards eco-friendly energy without waste concerns.

Giant batteries, from lithium-ion to lakes, crucially store energy, powering cities sustainably. Discovering new forms is key.