The battery can not be charged fully under high temperature environment

Question

Accepted Answer

Solution:
1. The standard battery of Xiaomi mobile phone is lithium ion battery. The best working environment is 0℃~45℃, and the best non-working temperature is -20℃~45℃. 
2. When used at normal temperature, its lithium ions will remain active. The electrolyte inside the lithium ion battery will generate current through the change of the anode and cathode potential difference through the chemical reaction. 
3. When the mobile phone is above 45 ° C, in order to reduce the safety problems caused by the battery heating during charging and damage to the battery, the maximum cut-off battery voltage of charging will be limited to 4.1V when the battery is between 45 ° C and 60 ° C, resulting in the phenomenon that the battery is not fully charged. 
4. When the temperature is over 60℃, the battery protection mechanism will trigger and the mobile phone will shut down automatically. Therefore, when the mobile phone works in a high temperature environment, the phenomenon of battery charge dissatisfaction or failure to start up may occur. 
5. When the battery temperature returns to normal operating range, its performance returns to normal.Therefore, it is recommended to pay attention to the temperature of the mobile phone environment and use it in the best working environment possible.If the mobile phone is automatically shut down or not turned on due to this reason, it is advised to go to the after-sales center for testing.