EcoFlow DELTA 3 Ultra

EcoFlow DELTA 3 Ultra is a 3,072Wh portable power station built for home backup, RV power, emergency preparation, and off-grid use. It delivers 3,600W of continuous 120V AC output, handles surges up to 7,200W, and supports high-demand appliances up to 4,600W through X-Boost. This is the standard DELTA 3 Ultra model with a fixed 3,072Wh battery capacity.

EcoFlow DELTA 3 Ultra Highlights

• 3,072Wh battery: 51.2V, 60Ah automotive-grade LFP battery
• 3,600W rated AC output: Pure sine wave 120V power for household appliances, RV equipment, tools, and electronics
• 7,200W surge output: Additional starting capacity for appliances with high startup demand
• 4,600W X-Boost: Supports certain resistive appliances above the normal rated output
• 800W maximum solar input: Recharge from compatible solar panels through the 11–60V DC input
• Fast AC charging: Up to 1,800W input; approximately 89 minutes from 0–80% under EcoFlow test conditions
• Four charging methods: Wall outlet, solar, generator, or compatible EcoFlow alternator charger
• Less than 10ms automatic switchover: Helps keep sensitive devices operating during an outage
• Quiet operation: As low as 25dB at a 600W load under EcoFlow test conditions
• Wi-Fi and Bluetooth: Monitor and control the system through the EcoFlow app

3,600W Output With 7,200W Surge Capacity

The DELTA 3 Ultra provides 3,600W of continuous AC output and up to 7,200W of surge power. That is a major step up from a typical 1,800W portable power station and gives the unit enough output for refrigerators, freezers, sump pumps, power tools, kitchen appliances, office equipment, and many RV loads. X-Boost supports compatible appliances rated as high as 4,600W, although X-Boost is different from the unit’s 3,600W continuous rated output.

3,072Wh LFP Battery

The correct battery capacity is 3,072Wh, rated at 51.2V and 60Ah. EcoFlow uses lithium iron phosphate battery chemistry with an intelligent battery-management system that monitors state of charge, battery health, temperature, voltage, and current. EcoFlow estimates approximately 10 years of service with proper use.

Expansion note: The standard DELTA 3 Ultra does not support extra-battery expansion. If expandable storage is required, the DELTA 3 Ultra Plus is the appropriate model.

Four Ways to Recharge

• AC wall charging: Up to 1,800W; approximately 0–80% in 89 minutes
• Solar charging: 11–60V, 18A maximum, up to 800W; approximately 0–80% in 3.37 hours at the full rated solar input under ideal conditions
• Generator charging: Compatible with conventional generator AC power and supported EcoFlow Smart Generator charging
• Alternator charging: Compatible with an EcoFlow Alternator Charger sold separately

Charging times are laboratory estimates. Temperature, battery condition, available input power, solar conditions, cable losses, and active loads can change real-world charging time.

Best Uses

• Emergency home backup: Refrigeration, communications, medical devices, internet equipment, lights, and selected critical appliances
• RV and travel-trailer power: The 30A outlet supports many RV applications while the USB and 12V ports handle smaller electronics and accessories
• Home office and network backup: Less-than-10ms switchover helps protect computers, NAS devices, routers, and other sensitive equipment
• Storm preparation: Quiet indoor battery power without gasoline storage, engine exhaust, or routine engine maintenance
• Off-grid and mobile work: Solar, alternator, and generator-charging options provide flexibility away from utility power

Full EcoFlow Specifications

Important DELTA 3 Ultra vs. DELTA 3 Ultra Plus Difference

Both models have a 3,072Wh internal battery, 3,600W AC output, 7,200W surge rating, and 4,600W X-Boost. The standard DELTA 3 Ultra has an 800W maximum solar input and does not accept extra batteries. The DELTA 3 Ultra Plus supports up to 1,600W of solar input and can expand to approximately 11kWh with two compatible DELTA Pro 3 Extra Batteries.

Why Buy From AllProGenerators?

AllProGenerators.com is a family-owned authorized EcoFlow dealer with U.S.-based product support. If you are deciding between the DELTA 3 Ultra and DELTA 3 Ultra Plus, call 954-249-2314 and we will help match the model to your expected loads, solar array, and desired runtime.

Frequently Asked Questions

What is the correct DELTA 3 Ultra battery capacity?

The battery is rated at 3,072Wh, 51.2V, and 60Ah. That is the factory-rated capacity for this model.

What are the continuous and surge output ratings?

Continuous AC output is 3,600W. Surge output is 7,200W. X-Boost can operate certain compatible appliances rated up to 4,600W, but X-Boost should not be confused with continuous or surge output.

Can the DELTA 3 Ultra use an extra battery?

No. The standard DELTA 3 Ultra has a fixed 3,072Wh capacity and does not support extra-battery expansion. The DELTA 3 Ultra Plus is the expandable version.

How much solar can it accept?

The standard DELTA 3 Ultra accepts up to 800W of solar input at 11–60V DC and 18A maximum.

How fast does it recharge from a wall outlet?

EcoFlow lists approximately 89 minutes to reach 80% under ideal laboratory conditions with the rated AC input.

Can it power an RV?

Yes. Its 3,600W output, 30A AC connection, USB ports, and 12V car outlet make it suitable for many RV loads. Total appliance demand and startup surge must remain within the unit’s limits.

Can it be used for home backup?

Yes. It can power appliances directly or connect to selected home circuits through compatible inlet and manual transfer equipment installed by a qualified electrician.

Is it safe to use indoors?

The power station itself produces no engine exhaust and can be used indoors according to EcoFlow’s instructions. Any fuel-powered generator used to recharge it must remain outdoors, far from doors, windows, and vents.