Will the cold weather affect the battery capacity of mobile phones?

Cold weather will affect the power of mobile phones. Because the temperature drop will increase the resistance of the electrolyte of the mobile phone lithium battery, the generated current will be relatively reduced, and the chemical reaction rate will also be reduced. So that the battery cannot be discharged. Causing the battery of the mobile phone to drop or suddenly shut down.

Extended data:

Mobile phone battery consists of three parts: battery core, protection circuit and shell. At present, all mobile phone batteries are lithium-ion batteries (often referred to as lithium batteries in irregular situations), and the cathode material is lithium cobalt oxide. The standard discharge voltage is 3.7V, the charging cut-off voltage is 4.2V, the discharge cut-off voltage is 2.75V, and the unit of electricity is Wh.

The cold weather in winter will cause the mobile phone battery to be fully charged but unable to release, which will increase the electrolyte resistance inside the mobile phone battery, reduce the generated current and slow down the chemical reaction. Therefore, the battery performance will decline, resulting in the use of mobile phone power too fast in cold environment.

Don't overcharge your mobile phone. The mobile phone keeps 40% to 80% power, which is the best state of the mobile phone. Overcharging will make the voltage too high and damage the mobile phone. After charging for a long time, the life of mobile phone battery will be greatly shortened.

References:

Zhongguancun Online-It turns out that they are the real culprits of the automatic shutdown of mobile phones.