When the battery is charged, the charging voltage applied to both ends of the battery is higher than the terminal voltage of the battery, and the battery is not discharged. At this point the battery is operating as a load in the circuit, and the power to the various components of the handset is provided by the charger. Therefore, using a mobile phone while charging, in theory, has little effect on battery life.
Secondly, science: the battery life that may be encountered in actual life, generally: 1, overcharge: charging the battery for too long, the charge exceeds the rated capacity of the battery. Now mobile phones generally have a protection mechanism. After the battery is fully charged, the internal circuit of the mobile phone automatically disconnects the charging circuit. However, it is not excluded that some inferior chargers or universal chargers are not designed to protect the circuit. So please pay attention when using the charger or universal charger.
2, over-discharge: usually when the phone is too low, it will automatically shut down (because the battery voltage is too low). But if you restart, you will find that the phone still has power to use (battery voltage rises). Automatic shutdown is a protection mechanism for manufacturers of mobile phone batteries. Over-discharge of the battery will cause serious damage to the battery life. Therefore, please charge the battery when the battery is too low. It is recommended to charge the battery when it is convenient to ensure that the battery has sufficient power.
3, over temperature: battery temperature is too high will also affect the battery life. Frequent discharge of the battery will cause heat, and the battery overheating during actual use is usually caused by this reason. Therefore, you need to pay attention to heat dissipation when playing large games or running other power-consuming programs, as well as controlling program running time.
4. Under temperature: When the battery temperature is lower than 0 degrees Celsius, the lithium battery is not allowed to be charged.
5. Overcurrent: Using a charger with a high power to charge the battery will cause damage to the battery. However, manufacturers now have an alarm when the charging current is too high. Of course, it is not known whether the seat charger and the universal charger have an alarm function. The worst case of overcurrent is a short circuit. A short circuit may cause the battery to explode and burn. Please do not try. Basically, in daily life, there are so many common effects on battery life. Good usage habits can be very helpful in extending battery life and life.