Huawei nova4 battery capacity 3750mAh, support 9V\/2A fast charge. Huawei's super fast charge (SuperCharge) was first introduced on the Mate 9 in 2016, and P10 and Mate 10 are also supported, which is Huawei's own fast charge protocol, which supports up to 4.5V\/5A or 5V\/4.5A, with a maximum power of 22.5W, and provides 4.5V\/5A on-board fast charge. Flash charge is a fast charging technology independently developed by OPPO, to put it bluntly, flash charge is a company that has developed its own fast charging technology. In fact, flash charge is a type of fast charge, but mobile phone manufacturers in order to highlight the advantages of their own research and development of fast charge technology, they use a unique name. OPPO's flash charge is different from Qualcomm's fast charge from the technical level. Because the path taken by OPPO to achieve fast charging of mobile phones is completely different from the path taken by Qualcomm.
OPPO's VOOC flash charge uses a low-voltage, high-current fast charge technology, which makes the temperature of the phone lower and safer when charging.
The disadvantage is that a series of related components from the charging port, charging cable and charging are specially made. If you want to use OPPO's charging head to charge your phone, hoping to speed up the charging speed, it is impossible.
Relatively speaking, Qualcomm uses high-voltage and low-current fast charging technology, which has a higher temperature when charging the phone, but has lower requirements for the charging line and a wider range of use.