Why does the mobile phone die so quickly when the weather is cold?

Because the cold environment will increase the electrolyte resistance inside the mobile phone battery and reduce the chemical reaction rate. As a result, the battery of the mobile phone cannot be completely discharged when charged in a cold environment, so the mobile phone consumes power quickly.

Extended data:

Chargers are divided into direct charging and seat charging. Direct charging converts 220 AC commercial power into 5V DC power supply, which is input to the mobile phone, and the voltage is reduced by the charging circuit of the mobile phone for battery use. Generally, there will be delivery when you buy a mobile phone. The charger is directly connected to the battery and converts the mains electricity into the voltage required by the battery.

Before charging, lithium batteries do not need special discharge. Some fast chargers only show 90% full when the signal light changes, and the charger will automatically change to charge the battery slowly. But generally speaking, as long as it is full, it can be removed.

In the use of lithium batteries, it should be noted that after a period of time, the battery will enter a dormant state, when the capacity is lower than normal, and the use time will be shortened. However, the lithium battery is easy to activate, and it can be activated after 3-5 cycles of normal charge and discharge, and the normal capacity can be restored.

References:

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