I believe that it still puts out 4000w while charging through a 120v ac outlet. Not sure if it will allow the amps that you get from a 240v while doing that though. I think I am going to wait for them to go on sale and get myself one!
I am trying to decide between the Ecoflow delta pro:
https://offgridstores.com/collections/ecoflow-delta-pro-solar-generator-kits/products/ecoflow-delta-pro-smart-extra-battery
or the Anker solix F3800...