If your inverter really is only to power the laptop, I'm a big fan of a 12V dc-dc converter instead:

https://www.amazon.com/KFD-Universal-Pavilion-VivoBook-ThinkPad/dp/B07TT2F95L/ref=sr_1_3?crid=TOJQ70YY8P16&keywords=12v+dc+universal+laptop&qid=1663366917&sprefix=12v+dc+universal+laptop%2Caps%2C293&sr=8-3

there's many available, and sometimes it's a bit of a gamble whether you can find one with an adapter that fits.

or if it's usb-c:

https://www.amazon.com/83W-12V-Outlet-Laptop-Charger/dp/B0B1DHNLDS/ref=sr_1_2?crid=1DU32MIYOF0MV&keywords=12v+dc+auto+usb-c+pd&qid=1663367166&sprefix=12v+dc+auto+usb-c+pd%2Caps%2C324&sr=8-2

(I haven't bought these particular ones before - I just did 3 seconds of searching)