The mobile phone will automatically turn off in cold weather. Why?

The reason is this: mobile phone batteries are mostly lithium-ion batteries, which usually consume more power at low temperature, and the lithium-ion batteries will stop working when their own temperature is lower than 10 degrees Celsius.

The acceleration of battery power consumption in low temperature environment is related to the chemical properties of lithium battery itself. Generally speaking, when the mobile phone detects low battery capacity and low current due to low ambient temperature, the temperature protection circuit in the built-in battery protection board will automatically start and the mobile phone will automatically shut down.

Extended data:

The anode and cathode of a lithium battery are electrolytes. In the process of use, electrons are generated from the negative electrode and reach the positive electrode through the electrolyte to form current, so the generation of current is a chemical reaction process.

One of the factors affecting the chemical reaction rate is temperature. When the ambient temperature is too low, the electrolyte resistance increases, the chemical reaction rate decreases, and the generated current is relatively reduced. Therefore, the reason for the increase of battery power consumption in low temperature environment is actually that the current generated by the battery decreases, which leads to the decrease of available power, so it will feel more power consumption when used.

Accordingly, the solution is not to try to start the machine locally, but to return to an environment with normal temperature and wait for a while before starting the machine. Don't turn on your mobile phone as soon as you return to your room, because if you return to your room from a cold place outside, the warm indoor air will condense when it is cold, and the mobile phone will produce water vapor. If water vapor enters the motherboard, a fatal failure will occur. Not only mobile phones, but also any digital products.

References:

People's Network-Why does the mobile phone consume power quickly in winter?