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Batteries

What Would It Take to Double a Cell Phone’s Battery Life? by Nicholas St. Fleur.

How is it possible that mobile phones can do so much—summon cars, order groceries, make video-calls, count footsteps—and yet still drain power so quickly? For devices that are so mind-bogglingly smart, the constant charging that’s required seems painfully outdated. Why hasn’t anyone built a better phone battery?

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