It is normal for vivo phones and chargers to heat up slightly while charging.
1, mobile phone energy conversion and internal resistance consumption will produce a certain amount of heat;
2, some models are equipped with flash charging function, we improve the power output of the charger and shorten the charging time at the same time, may bring a certain degree of charging heat.
However, please rest assured that vivo mobile phones have passed strict safety tests before leaving the factory, and there will be no security risks.
In addition, you can refer to the following suggestions can effectively improve the phenomenon of charging heat:
1, try not to use the phone for a long time while charging;
2, do not put the phone in a poor heat dissipation environment (such as quilts, blankets, cotton, cloth and other objects above charging).
The power consumption of the mobile phone in standby is very small, that is to say, the equivalent load resistance of the battery is large, so the discharge current is very small, so the battery will not heat up, and the internal consumption of battery power is very small. The power consumption of the mobile phone is very large when it is waiting for a call or using MP3, that is to say, the equivalent load resistance of its battery is small, and it is a large current discharge when working.
After the battery is discharged, the internal resistance increases, but the current required for the work of the mobile phone can not be reduced, then a considerable part of the energy is consumed in the internal resistance of the battery, resulting in the battery heating, discharge acceleration, and the battery's use time is quickly shortened.
General charging will have a slight heat! Does not affect the use!