A 45w computer can be charged with a 65w charger.
45w computer according to the charging power is to support the fast charge protocol tablet computer, 65 watt charger under normal circumstances can also support the fast charge protocol charger, the current mainstream fast charge protocol is basically USB-PD fast charge protocol, so you can use 65w charger to charge.
Even if the fast charge protocol is not compatible, it can be charged using the standard 5 volts. Yes, this charging power is compatible and can be used as long as it supports the same interface and the same charging protocol.
The output voltage of the 65w charger is consistent with the voltage of the 45w power supply, but if the current increases, it has no effect, but if the 65V voltage is large, it will easily cause instability, and it will hurt the hardware, and it may be burned seriously.