Cheap power supply with less watts for notebook?

Pa
- in Gaming
1

I have an MSI gaming notebook and want a second PSU for it.
The original power supply has 19.5V, 9.23A = 180 watts.
Cheap power supplies have 19V and 4.74A or 6.3A, so 90 or 120 watts.
Can I use such a power supply without danger, it loads then only slower? Or how ist that to understand?

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The power adapter will not hold when the notebook is used on the network.

Only for loading you can probably use it.