The demo shows off a 90 W adapter pretending to run at 65 W. With this working, you could power the laptop from any supply that can meet the requirements for current and voltage.
You do also need to make sure that your 20 V is within a reasonable range; sometimes the adapter will check that ... especially from the HP/Dell/Lenovo dark triad, will implement DRM that makes ...
Xiaomi has announced the pre-sale of its latest Mijia 3 HP Dual Outlet Vertical Air Conditioner ... durability and ease of cleaning. The AC is equipped with Kunyi biomimetic dual air outlets ...