Why is the cold weather causing the battery of mobile phone to be not durable?

When the weather is cold, the cold environment will reduce the activity of the mobile phone battery, slow down all the chemical reactions inside the battery, and thicken the electrolyte of the mobile phone battery in severe cases. As a result, the battery capacity of the mobile phone is attenuated, so the battery will not be durable. In severe cases, the phone will suddenly turn off.

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Lithium-ion batteries have no memory effect, but they are inert. It may be passivated after long-term use, and the best performance can be restored after charging and discharging several times. 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.

The newly bought battery does not need to be charged for the first time 12 hours, but it is best to fully charge and discharge for 3~5 hours. Fully charged refers to normal charging to 100%, and fully charged refers to when the mobile phone uses a low battery reminder. Because the battery has to go through the processes of liquid injection, formation, charge and discharge, capacity separation, etc. before leaving the factory, the battery is in an activated state.

The first generation of nickel-cadmium batteries need to be charged at a small rate. It is generally recommended that the charging current is110c. For example, if your battery capacity is 600mAh, then 10C is 600mA, and110c is 60mA. So it takes more than 10 hour to fully charge. For Ni-Cd battery, small rate charging is beneficial.

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Baidu encyclopedia-Li-ion battery