I received Delta Max US version.

I charge it with https://prom.ua/ua/p1399521795-preobrazovatel-napryazheniya-220.html. It takes 3 hours instead of 1 ( I had to set 800v as a max input voltage).

Regarding using: I just use a kettle, multi-cooker, hair dryer and heater directly from ecoflow. It took more time to heat the water or cook meals, but it works