“Does exposing my phone to cold weather damage battery, and if so, is the damage permanent?”

(Answer requested by Dan Hopper)

Chilly temps (below room temp, but above freezing) will temporarily reduce the amount of power available from a given battery charge, but won’t permanently hurt anything.

Freezing cold may render a phone completely, but temporarily, inert. However attempting to recharge a below-freezing battery can cause permanent damage.

Extreme cold by itself — temperatures well below freezing — also can permanently damage a battery and/or the device’s screen.

So: If your device gets significantly chilled, let it return to normal temperature in an inside pocket or other warm location before you try to use or charge it.

And: Try not to let it get that cold in the first place!

More:

• https://en.wikipedia.org/wiki/Lithium-ion_battery#Extreme_temperatures
  
• Discharging at High and Low Temperatures
  
• li ion battery operating temperature range

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