Tips and Myths About Extending Smartphone Battery Life - The New York Times - So why is battery technology still underwhelming? Plenty of companies have been developing smarter battery technology for years, including methods to increase battery capacity tenfold or charge devices by pulling energy from the air. But lithium ion, the technology that most mainstream batteries are based on, is low cost and easily reproducible while being safe — so we’ll be stuck with it for the foreseeable future, said Charlie Quong, an executive at Mophie, a battery accessory maker, in an interview.
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