The lead-acid battery has been around for a century and a half, and lithium-ion cells for only 15 years. But battery technology lags the spiraling energy demands spurred by the portable electronics boom. Today's consumer wants power "to go," and the race for the best way to power portable devices is on. Basically, batteries are containers that hold chemicals, and the technology hasn't changed much since the 1940s. Different chemicals have increased battery life but it's still not satisfactory.
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