You probably don't even think about the battery in your phone, or your car, or your flashlight — until it stops working. Often, that's when you're getting around the campground in the peak of summer or snapping a snow-angel selfie in the dead of winter. Why are batteries so sensitive to harsh weather? It's because inside each battery is a tiny chemical reaction, and chemical reactions are very dependent on temperature.
A Science Lab in Your Flashlight
You're Hot Then You're Cold, You're Yes Then You're No
Related: Easy Way to Tell Whether a Battery Is Dead
Written by Ashley Hamer June 15, 2017
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