EcoFlow DELTA Pro Ultra
The most powerful whole-home backup solution.
Month-long power security.
6-90kWh Capacity
Take home power dependability to another level with up to 90kWh battery capacity. For a standard household, that's over 30 days of essential backup power to keep appliances like lights and refrigerators running strong (time may vary). Stackable and space-saving, it packs comfortably into a garage or utility closet.
One unit covers every appliance.
7.2kW-21.6kW, 120V & 240V Output
With a 7.2kW output, EcoFlow DELTA Pro Ultra effortlessly runs even energy-hungry household items, like a 3-ton central air conditioner*. For more power, pair 3 inverters with the EcoFlow Smart Home Panel 2 to unlock a 21.6kW AC output. Plus, with X-Fusion you'll get a constant 7200W output no matter what.*
Powers through the most challenging situations.
EcoFlow DELTA Pro Ultra tackles even the most grueling conditions. Whether it's extreme weather or freezing winters, this giant safeguards your power security, just like usual.
Operating temperatures: -4℉ to 113℉
290V high voltage tolerance
IP54 dustproof and splashproof
What's in the box
Specs
Net Weight
Inverter：31.7 kg （70 lb）Battery：50.7 kg （111.8 lb）
Dimensions
Inverter：690 × 481 × 214 mm（27.2 × 18.9 × 8.4 in）Battery：660 × 455 × 204 mm （26 × 18 × 8 in）
Capacity
102.4V⎓60A, 6,144Wh
Battery Dimensions
660 × 455 × 204 mm (26 × 18 × 8 in.)
Battery Capacity
102.4V⎓60A, 6,144Wh
AC Output
Discharging: Pure sine, 7,200W total, 120V/240V~ 60Hz
Bypass: 100-120V~30A total, 50Hz/60Hz
USB Ports
USB-A (×2）：5V⎓2.4A, 12W max per port, total 24W
USB-C (×2）：5/9/12/15/20V⎓5A, 100W max per port, total 200W
DC Output
12.6V⎓30A, 378W max
Battery Cell Material
LFP
Battery Cycle Life
The battery maintains 80%+ SOH (state of health) after 3,500 cycles at 0.5C/0.5C at 25°C (77°F)
Battery Protection type
Overvoltage protection, overload protection, overtemperature protection, short circuit protection, low temperature protection, low voltage protection, overcurrent protection
AC Input
Charging: 100-120V~15A; 200-240V~12.5A, 50/60HzBypass: 100-120V~15A, 50/60Hz (duration < 3hrs when the current exceeds 12A)
Battery Temperature
Discharging temp: −20°C to 45°C (−4°F to 113°F)
Charging temp: −20°C to 45°C (−4°F to 113°F)
Storage temp: −20°C to 45°C (−4°F to 113°F) (optimum: −20°C to 45°C(68°C to 86°F))
Battery IP Rating
IP54
High-PV
80-450V⎓15A max, 4,000W max
Low-PV
30-150V⎓15A max, 1,600W max
Inverter Temperature
Operating temp: −4°F to 113°F (−20°C to 45°C)
IP Rating
IP54
Battery Cell Material
LFP
Battery Cycle Life
The battery maintains 80% after 3,500 cycles
Battery Protection type
Overvoltage protection, overload protection, overtemperature protection, short circuit protection, low temperature protection, low voltage protection, overcurrent protection
Noise Level
<30 dB
UPS
Backup UPS <20 ms; Online UPS 0 ms
Communication Method
Bluetooth & Wi-Fi & 4G
FAQs
Can the EcoFlow DELTA Pro Ultra connect to the EcoFlow Smart Home Panel?
No. However you can use EcoFlow Power input/output Cable to connect DPU with EcoFlow Smart Home Panel 2.
Can the EcoFlow DELTA Pro Ultra charge using existing rooftop solar?
Yes, it’s compatible with existing solar systems, including rooftop solar*. For each EcoFlow DELTA Pro Ultra Inverter, solar input can reach a maximum of 5600W (16.8kW with 3 inverters) with the following: High voltage PV: 80-450V, 15A, 4000W MaxLow voltage PV: 30-150V, 15A, 1600W Max
*If you connect the EcoFlow DELTA Pro Ultra to PV system circuits installed on or in buildings, according to NEC regulations, the system shall include a rapid shutdown function to ensure operation safety and reduce shock hazards for emergency responders. If you wish to connect the EcoFlow DELTA Pro Ultra to PV system circuits, a pre-purchase consultation must be completed by a qualified electrician or installer.
Can EcoFlow DELTA Pro Ultra be charged using an EcoFlow Smart Generator?
EcoFlow Smart Generator can charge EcoFlow DELTA Pro Ultra using an EcoFlow AC Charging Cable (NEMA 5-15P to C19).
EcoFlow DELTA Pro Ultra can not be charged using DC through an XT150 cable.Third-party generators can charge EcoFlow DELTA Pro Ultra using the EcoFlow AC Generator Charging Adapter. The EcoFlow Smart Generator can be auto-switched on or off through the EcoFlow app.
Does EcoFlow DELTA Pro Ultra work with an existing grid-tied system that does not have a backup feature?
Unfortunately, EcoFlow DELTA Pro Ultra cannot connect and feedback to the grid.
Can I connect EcoFlow power stations to my house electric panel directly?
Yes, but the transfer switch should be connected to the power station's AC output port. You should disconnect the circuits from the grid before the power station supports them. The total power consumption of the circuits should not exceed the output power rating. The output will not be grounded if the power station is not connected to the grid.
What are EcoFlow DELTA Pro Ultra's solar charging priorities?
Charging priority: low voltage photovoltaic > high voltage photovoltaic > 5 + 8 interfaces (including Smart Home Panel 2) > mains
Can an EcoFlow DELTA Pro Ultra Battery charge without the EcoFlow DELTA Pro Ultra Inverter?
No. The EcoFlow DELTA Pro Ultra Battery needs to be connected to an EcoFlow DELTA Pro Ultra Inverter to charge. EcoFlow DELTA Pro Ultra is not compatible with third-party inverters.
How long is the EcoFlow DELTA Pro Ultra warranty?
EcoFlow DELTA Pro Ultra Inverter Warranty: 5 Years; EcoFlow DELTA Pro Ultra Battery Warranty: 5 Years; Even then, each LFP battery's lifespan lasts for as long as 10 years with up to 3500 cycles.
What is the EcoFlow DELTA Pro Ultra weather-protection level?
The EcoFlow DELTA Pro Ultra weather-protection level is IP54. An IP54 rating means that your product will be protected against dust and other particles and water spray from all directions.
Can X-Fusion charge EcoFlow DELTA Pro Ultra from an AC outlet while it's also plugged into the Smart Home Panel 2?
X-Fusion technology ensures that all AC output sockets provide optimal output in terms of wattage and amp. In fast charging mode, the output will always be 7.2kW, no matter how much the input is.
When EcoFlow DELTA Pro Ultra is connected to Smart Home Panel 2, AC charging is disabled. 5 + 8 ports and C20 charging port mutual exclusion.
Can EcoFlow DELTA Pro Ultra charge from a 15A AC outlet while delivering 240V?
When charging EcoFlow DELTA Pro Ultra with 120V, it can output 240V normally. When charging EcoFlow DELTA Pro Ultra with 240V, it cannot output 240V. When charging at 240V using X-Stream charging via an AC inlet, AC output is not available. That is to say, when charging with high voltage 240V input voltage, all AC output is disabled.
Can EcoFlow DELTA Pro Ultra power a several-ton air conditioner?
One EcoFlow DELTA Pro Ultra can power a 3-ton central air conditioning unit. 2 × DELTA Pro Ultra can power a 4-ton central air conditioning units, while the LRA rating must be within 120A.
What is the charging power and time of a single battery?
With only one battery pack, the fastest charging input is 6200W, taking about 92 minutes to charge from 0% to 100%.When there are two battery packs, the fastest charging input is 8800W, and it takes about 1 hour and 56 minutes to charge from 0% to 100%.
Can an electrical appliance plug directly into EcoFlow DELTA Pro Ultra?
Yes. EcoFlow DELTA Pro Ultra (Inverter + Battery) works as a standalone unit powering electrical appliances of up to 7200W. There are 11 outlets on the inverter, including NEMA 5-20, TT30, L14-30 supporting 30A, USB-C, and USB-A.
What is the EcoFlow DELTA Pro Ultra Inverter's surge rating, and how long does it last?
What is the EcoFlow DELTA Pro Ultra Inverter's surge rating, and how long does it last?
Is AC passthrough possible with a 120V input?
Use the C20 outlet for a bypass mode with a 120V input. There is no bypass mode for 240V input.
What is the maximum input wattage for AC charging using a 240V load?
When using the C20 outlet and charging at 240V, the maximum charging input is 3000W. AC output is turned off at this time.
Can EcoFlow DELTA Pro Ultra/EcoFlow Smart Home Panel 2 run without the EcoFlow app?
EcoFlow Smart Home Panel 2 requires the EcoFlow app to run. EcoFlow DELTA Pro Ultra works without the EcoFlow app, but it is recommended for convenience.
What is the Bluetooth version?
EcoFlow DELTA Pro Ultra's Bluetooth version supports 4.2 and 5.0.
Can I program EcoFlow DELTA Pro Ultra to run at certain times, like during peak rate hours?
Yes, charging times can be set.
Is EcoFlow DELTA Pro Ultra compatible with third-party inverters.
EcoFlow DELTA Pro Ultra is not compatible with third-party inverters.
How long does it take to fully charge a battery?
The fastest charging power for one battery is 6200W. It takes about 92 minutes to charge one battery from 0% to 100%, but if stacked on two or more batteries, the maximum charging power can reach 8800W. It takes about 1 hour and 56 minutes to charge two batteries from 0% to 100%.
Can an EcoFlow DELTA Pro Ultra Battery charge without the EcoFlow DELTA Pro Ultra Inverter?
No. The EcoFlow DELTA Pro Ultra Battery needs to be connected to an EcoFlow DELTA Pro Ultra Inverter to charge. EcoFlow DELTA Pro Ultra is not compatible with third-party inverters.
After plugging in a smartphone, the USB symbol on the EcoFlow DELTA Pro Ultra flashes.
It probably means there is poor contact between the charger and the phone. Try plugging it in again, changing the input port, changing the charging cable, or trying a different phone.
Batteries cannot be charged in low temperatures.
The battery has a self-heating function. At sub-zero temperatures, the battery pack will heat up to above-zero temperatures. However, for improved charging and discharging performance, place the battery indoors. After enabling the battery's self-heating function, the temperature will rise to the optimal level, and each discharge cycle will consume 10% of the electricity.
Incessant battery overheating.
The battery cell will show overheating at 60 degrees. It must be stationary in a cool place for at least 2-3 hours before returning to a safe working temperature.
The EcoFlow DELTA Pro Ultra app interface does not have independent AC and DC output data.
Switch to the app's standard mode to see an EcoFlow DELTA Pro Ultra single-unit interface.
There is a 274 fault code when using a 780W/5700W dryer and charging at 1800W/120V.
A 274 fault is caused by a C20 outlet overcurrent. After a C20 overcurrent, it will switch to INV and discharge normally, as long as you have a split load. At this time, the maximum power should be 7200W. The custom charging mode does not support X-Boost. Once the output load exceeds the set charging power, it will cause the 274 fault. If the user needs to charge and discharge a dryer simultaneously, the C20 must be set to fast charging mode.