The 65W fast charger is an intelligent charger that supports a variety of charging protocols and can output a combination of voltage and current with different power, but so far, no charger has been found to support the full protocol.
Similarly, the fast charging mobile phones on the market are not full protocol charging, but the commonly used charging protocols are generally supported, such as 5 volts 3 ampere 15 watts fast charging, 65 watts fast charging protocols, and not all fast charging mobile phones are supported.
Therefore, 65 watts is not suitable for all fast charging mobile phones, but you can shake hands with the phone and fast charge the phone with less than 65 watts of charging power.
As long as the mobile phone that supports the same fast charge protocol can use this power, but because the charging power is different, there will be a certain difference in the charging speed.