I am looking at one or some opitons to where I could have a generator and fire it up and with transfer switch or interlock kit. That way I could run which breakers. Some of the battery options are nice but, you needf to look at starting watts and running watts. Plus, you have to have a way to charge the battery power bank. Some have solar panel kits for when you don't have power to charge.
LED lights don't use much power. Anything with a burner or element uses a lot. A fridge might us 800 running watts but when the compressor kicks in it might be 1200.
I am looking at some of the jackery, eco flow, anker, bluetti stuff. The battery power banks are expensive.