I see that EcoFlow will be coming out with a new microsystem. It is modular and also supports adding/connecting external batteries to it.
Seems like this is a mini "Titan" looking product.
EcoFlow R600
Our mission is to empower people and communities through portable, clean, reliable power for lasting impact by dethroning the traditional gas generator and reinventing the way the world accesses energy.
ecoflow.com
Seems like this is a mini "Titan" looking product.