I do watch certain vlogs on Youtube. Recently many of the vloggers have been given a 'Jackery' unit to try out and then post a review.
I know I constructed a power hungry boat, mainly due to a 240 volt fridge/freezer, and I also mostly use a 1kw kettle when I'm out and about. I'm based in a marina, but I leave for 3 to 4 months each year.
Anyway (sorry for the waffle) I decided that one of these units would be useful, but wasn't that keen on the Jackery. Having looked at various reviews, I bought the 'EcoFlow River
Now, I've been using it around the house, and I'm very happy with it. I think it will allow me another couple of days without having to run the engine.
I've also been looking at portable solar and decided to go for the Renogy 100w suitcase. This plugs directly into the Ecoflow for charging. The panel arrived yesterday and I'd taken the Ecoflow down to 75%. I've just set up outside and the panel is giving 70 watts and the Ecoflow shows it will be fully charged in 1 hour, for this time of year, I'm very impressed.
As I've said, I've bought these with my own English Pounds and it has cost just over £500. Quite pricey, but I'm sure my 4 @ leisure batteries will be happy.
Hope that may be of some use.