Question about EcoFlow Delta 2

Yes, it can. In our case, charging is also possible at the external port (the one on the side for the additional battery or the Powerstream inverter).
But briefly: With mains power, you will have charged the part very quickly up to the set maximum - after that, solar is useless ... unless you have your use case for it :) unless you have your own use case for it :) LG and have fun

Yes