Capacity: 8kWh-24kWh Week of home power during outages. Power Output: 8kW Runs 3-ton central AC and all other essential appliances you need. Endless energy Compatible with portable generators, auto rechargeing when connecting with EcoFlow Smart Generator 4000. Easy to Use Three ways to flexibly connect EcoFlow DELTA Pro 3 to your home(Inlet Box, Transfer Switch and Smart Home Panel 2) Forget Refueling Fast solar/car/outlet charging, charges to 80% in just 50 minutes, refueling with no worries.