Charging power is not the same, charging speed is not the same. In theory, if the power is doubled, the charging time can be reduced by half. Specifically, it is the vivo120w flash charge, which is filled with 4000 mah battery in 15 minutes; OPPO65w flash charge, full 4500 mah battery in 30 minutes; The 33w s7 takes about an hour to fully charge.
Specific to a certain brand of a certain model of mobile phone, it is also necessary to see whether the charging agreement is consistent, in short, whether it is the original charger.
The difference is that the first price, the fast charging price is high, the second charging speed, the fast charging speed is fast, whether it is using fast charging or slow charging, the quality of the charger must pass, is willing to buy the original charger, which can protect the battery of the mobile phone.