EcoFlow DELTA 3 Ultra Series Portable Power Station (3072Wh)

The EcoFlow DELTA 3 Ultra Series is a high-output portable power station designed for home backup, off-grid use, and long runtime setups that need real muscle. It delivers 3600W of output with 7200W surge, and with X-Boost mode it can support appliances up to 4600W. The system is built around automotive-grade full-tab LFP cells and EcoFlow positions it as a long-life platform with 10 years of reliable power, backed by 24/7 BMS protection and a rugged cell-to-chassis structure designed to handle condensation and transport bumps. 

For charging, EcoFlow lists multiple charge methods depending on the model. DELTA 3 Ultra Plus supports 6 ways to charge and can reach 0 to 80% in as little as 48 minutes using solar plus generator dual charging. DELTA 3 Ultra supports 4 ways to charge and can reach 0 to 80% in as little as 89 minutes with wall or generator charging. The platform also supports expandable capacity from 3kWh to 11kWh, and can be paired with an EcoFlow Smart Generator for longer runtime with automatic start and stop. 

Key Features

• 3072Wh capacity (DELTA 3 Ultra Series) 

• 3600W output, 7200W surge 

• X-Boost supports appliances up to 4600W 

• Expandable capacity from 3kWh to 11kWh 

• Charging options:

   

  • DELTA 3 Ultra Plus: 6 ways to charge, 0 to 80% in 48 minutes with solar + generator dual charging 

  • DELTA 3 Ultra: 4 ways to charge, 0 to 80% in 89 minutes with wall or generator charging 

   

• Two ways to connect to your home: Manual Transfer Switch or Inlet Box 

• 10ms auto-switch for critical devices like NAS systems and servers 

• Whisper-quiet operation up to 25dB at 600W 

• OASIS 3.0 app control with Storm Guard Mode, Self-Powered Mode, and scheduled tasks 

• Up to 5-year warranty (3-year standard + 2-year extended with EcoFlow App registration) 

Great For

• Home backup for outages and storms (especially if you want fast auto-switch behavior) 

• Off-grid cabins and long-runtime setups with expandable capacity 

• Running higher-draw appliances and power tools with strong surge headroom 

• Quiet power where noise matters (RV, campsite, indoor backup use)