It does not matter how much watts the power supply has if?
So I mean if now the laptop needs 90W, then a 120W power supply needs more power to charge than a 90W or is that more or less the same?
PS. Is it possible to load a 90W laptop with 80W?
So if the power supply has more watts it should not matter because nowadays it is automatically down-regulated to prevent overheating. If the laptop needs 90W then you should use a 90 + W power supply because otherwise it probably will not even start loading.
If the power adapter can deliver more than your laptop needs, it does not matter.
A power supply that is weaker will either not charge or overheat in the ideal case, in the worst case it may start to burn and is therefore not recommended.
And if I put this in a box with water?
Then there's a short circuit.
I've tried before times with a 230V adapter and then the laptop charger purely… The adapter is broken now… Do not understand what I did wrong…
That with the store works either way.
Use an 80W power supply when a 90 is needed, goes into the pants if you use your laptop on the power supply and go at full load.
Probably. Performance data not observed.
How do you mean?
How come in the pants?
The power supply is overloaded and "burns" through.
The adapter can still overheat internally if the power is not sufficiently dissipated. Finally, the adapter must have a plastic housing to withstand water. Plastic not only insulates against electricity, but also against heat.