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Why Smartphone Batteries Degrade Over Time (And Why Phones Die at 20%)

Why Smartphone Batteries Degrade Over Time (And Why Phones Die at 20%) You’ve probably seen this already: a two-year-old phone that sits at 17% for twenty minutes, then dies instantly the moment you open the camera. It feels like planned obsolescence, but the reality is much more mundane. Smartphone batteries die faster as they age because of a physical limitation…