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The world’s biggest battery

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By TedEd

Discover the world’s biggest battery and explore how inventors are creating other giant batteries to help power the world— sustainably.

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. Watch the video below:

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