may
Fast charge mobile phones can use slow charge. Fast charging mobile phones are only different from slow charging in the charging protocol and charging power size, as long as it is not a three-no product, in fact, any power supply can be charged. It should be noted that fast charging mobile phones use slow charging, charging speed will be slow, there may be a mobile phone fever phenomenon.
1. Fast charging mobile phones can be charged with ordinary chargers, but the speed is slow.
2. At present, the main principle of fast charging, from the physical calculation formula, power (p)= voltage (u)x current (i), in the case of a certain battery charging, power marks the charging speed, then there are three ways to shorten the charging time: constant voltage, increase the current; Constant current, rising voltage; Voltage and current increase.
3. High voltage low current mode: In order to increase the voltage, it is necessary to design multiple buck circuits in the charging circuit. The charging process of the general mobile phone is to first reduce the 220v household voltage to the 5v charger voltage, and then reduce the 5v charger voltage to 4.2v battery voltage. There are step-down circuits in the charger and mobile phone circuits, so the charger will heat up when charging, and the mobile phone will also heat up. Heating brings a bad experience and affects the safety of the battery.
4. Low voltage and high current mode: Increase the current, introduce the MCU into the charger circuit and battery circuit, rather than the buck circuit. Under the premise of low voltage and high current, the output of segmented cross current is realized by opening the voltage loop. oppo's vooc flash charge uses a low voltage and high current solution, which not only ensures aviation safety, but also solves the heating problem of mobile phone charging in an unprecedented way. Whether it is the adapter or the phone, it will not heat up when charging.
It doesn't matter in the short term. Even if the use of fast charge, because the mobile phone does not support the speed can not be fast. It is still recommended to use the original charger.