It was so cold that the batteries froze to death. Have you seen them?

It is normal for the battery to freeze to death because of the cold weather. Chemical reactions are sensitive to temperature. At low temperature, the chemical reaction is slow, which shows that the voltage on the battery drops sharply, the output capacity drops, and the mobile phone and other electrical equipment automatically turn off because of the voltage drop.

Because smartphones use lithium batteries. Between the anode and cathode of lithium battery is electrolyte. When the mobile phone is used, the battery will discharge, and the negative electrode will precipitate lithium ions through chemical reaction and move to the positive electrode through the dielectric. In the process of lithium ion activity, electrons will move, thus generating current.

Precautions for using mobile phone in low temperature environment:

Try not to expose your mobile phone to low temperature. When we go out, we can put our mobile phones in a close-fitting place or in a bag with insulation effect. When we need to answer the phone, we can use Bluetooth headset or wired headset. If there are no conditions, try to shorten the time of each use.