China
EcoFlow
Power stations built around fast AC charging and add-on batteries. The app does a lot of the work, so firmware quality is part of what you buy.
EcoFlow made one-hour wall charging normal in this category, and most of its line is designed to grow: a base unit now, an extra battery later. That modularity is the reason to pick it and also the reason to read the specs carefully, because not every model takes the same packs.