For laptops, it's much, much more efficient to find a DC power bank that charges at the laptop's native charge voltage (usually about 19-20V for PC laptops; I assume similar for Macs.)

There are too many of them to list for PC and while there are fewer that support Magsafe or USB-C PD for Apple, there are still enough of those (and increasingly many on the PD side) that I'd try those first before going to an AC inverter one for laptop use.

I've had a good experience with Dell's first-party "Power Companion" (I have the 18000mah/6 cell version; 65Whr) but it's manufacturer-specific.