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EcoFlow DELTA 3 Ultra Portable Power Station Solar Generator

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Top Authorized Dealer
Manufacturer Warranty Included
SKU EFDELTA3U-US

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Original price $2,499.00
Original price $2,499.00 - Original price $2,499.00
Original price $2,499.00
Current price $1,099.00
$1,099.00 - $1,099.00
Current price $1,099.00
Availability:
in stock, ready to be shipped

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Price Match Policy

Price Match

Here at OffGrid Living, we want to offer you the best prices online.

If you happen to find a lower price for the same product, we will guarantee to match their price or beat their price. Note, this does not apply to all products in the store. Please reach out to us via email or chat if you want a price match or price beat.

For the policy to apply, please send us a screenshot, link, or any other evidence of the product being priced lower than ours before making the purchase.

Refer to our Price Match Policy Rules.

Refunds & Returns Policy

At OffGrid Living, we are proud to have the best refund and return policies in the industry. If you’re not satisfied with your purchase for any reason, you may return it to us within 30 days for a refund.

If you have a problem with our order (there are missing components, damages, or the product is not functioning), please reach out to us as quickly as possible. Some of the problems can be resolved by going through the product manual or the product FAQs.

Refer to our Refunds & Return Policy for more details.

Shipping & Delivery

Order Processing

Once we receive your order, we will send you a confirmation email. Then we will process the order by confirming that the product is in stock and ready for shipment. If any of the items in your order are back-ordered, we will reach to you via email or phone and you may choose to either wait or receive a 100% refund.

Please allow 1-3 days for processing your order.

Shipping

We ship to the lower 48 continental United States only at this time.

Shipping times and shipping method will depend on the specific product and brand you purchase. If you have any shipping question, feel free to ask on the chat or email us at info@offgridlivingsolutions.com.

We will send tracking information by email the same day the shipping tracking number is created/available.

Before you sign the shipping bill, please THOROUGHLY INSPECT YOUR ITEM. Signing for the receipt of a damaged product removes the liability of the shipping company and OffGrid Living. Once you accept your shipment as non-damage, your item is your property.

Delivery time

Shipping Timeline listed above is an estimate. Please call or message the web chat for precise ETAs.

EcoFlow DELTA 3 Ultra Portable Power Station Solar Generator

DELTA 3 Ultra
1. 4 Ways to Charge, Ready in Just 89 mins: Ready in Just 89 mins (0-80%) with wall charging or generator charging, and can achieve longer runtime with an EcoFlow Smart Generator.

Common Features
1. 3600W Powerful Output: 7200W surge output. With X-Boost™ mode, supports heavy-duty appliances up to 4600W such as clothing steamers, electric dryers, lawnmowers, and electric frying pans.
2. Long-Lasting, Durable, and Reliable: Equipped with automotive-grade full-tab LFP cells, offering 10 years of reliable power, 24/7 protection BMS, Class-B certification, and EV-grade CTC structure that protects against overnight condensation and off-road bumps during transport.
3. 2 Easy Ways to Connect to Your Home: Manual Transfer Switch and Inlet Box.
4. 10ms Auto-Switch: keep critical devices like NAS systems and servers running smoothly.
5. 25dB Whisper-Quiet Operation: Ultra-low noise (≤25dB at 600W).
6. OASIS 3.0 Smart App Control: Dashboard to monitor real-time battery status, electricity prices, and savings. Storm Guard Mode automatically activates backup power before extreme weather hits. Self-Powered Mode and Scheduled Tasks save you money daily.
7. Up to 5-Year Warranty: Includes 3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration.

3600W Output—Powerful. Stable. Built to Handle It All

EcoFlow DELTA 3 Ultra delivers 3600W rated-output, with X-Boost™ 3.0 technology, it supports devices up to 4600W—effortlessly handling heavy-duty appliances[2]. The inverter samples AC voltage and current every 33μs with high precision with a DSP chip, ensuring a pure sine wave output with beyond grid-level stability—ideal for powering sensitive electronics reliably.

3600W Output—Powerful. Stable. Built to Handle It All

Go Hybrid—Extend Backup With a Smart Generator

Pair DELTA 3 Ultra with an EcoFlow Smart Generator[3] to achieve longer runtime—automatically switching between fuel and battery to keep you powered through multi-day outages or off-grid adventures.

4 Ways to Charge Up — Ready in Just 1.48 Hrs[4]

Remote charging control for added peace of mind.

4 Ways to Charge Up — Ready in Just 1.48 Hrs<sup>[4]</sup>
Long-Lasting, Durable, Always Ready for Emergencies

Automotive-Grade Full-Tab LFP Cells

Rugged exterior and intelligent BMS for unmatched reliability

Built to Last

From battery chemistry to structural design, DELTA 3 Ultra is engineered for extreme durability, environmental resilience, and whisper-quiet performance.

Built to Last

Deeper Insights, Easier Control

Monitor your energy usage and solar generation—all with one intuitive dashboard. Set timed charging/discharging missions so that you can charge during off-peak hours and discharge during peak rate periods to save costs.


Product Specifications

EcoFlow DELTA 3 Ultra Portable Power Station Solar Generator Product Specifications

Product Manual

EcoFlow DELTA 3 Ultra Product Manual

Product Warranty

EcoFlow Product Warranty

Please note that the warranty period may vary according to local laws and regulations. Some countries, states, and provinces do not allow limitations on how long an implied warranty may last, so the limitation described above may not apply to you. You may have other rights from state to state, province, or country.

DO NOT USE YOUR PRODUCTS UNTIL YOU HAVE READ THE TERMS OF THE WARRANTY.

All EcoFlow products purchased come with a limited warranty. BY USING ECOFLOW PRODUCTS, YOU AGREE TO BE BOUND BY THE TERMS OF THE ECOFLOW LIMITED WARRANTY.

The warranty period started when the original purchaser received the products.

Warranty extension 

You can extend the warranty for products purchased between January 1, 2022, and August 31, 2022, by registering on the official website on or before October 15, 2022. 

Warranty cannot be extended for products purchased before January 1, 2022.

Customers who have purchased products on or after September 1, 2022 will enjoy the warranty period (with warranty extension) listed in the table above. Customers are advised to complete registration as early as possible.

Exclusions and Limitations

This warranty does not apply:

  • Non-quality related issues;
  • Items purchased from unauthorized resellers;
  • Purchases without valid proof of purchase;
  • Items that have been refunded;
  • Items that have expired their warranty period;
  • Any defects or damages caused by misuse of products, unauthorized modification, dis-assembly or operation not in accordance with the official instructions or manuals;
  • Any defects or damages caused by exposure to excessive heat, liquids or other external causes;
  • Any defects or damages caused by reliability or compatibility issues when using unauthorized third-party parts;
  • Lost or stolen products;
  • Free products.

Cross-Regional After-Sales Service

EcoFlow does not provide a global product warranty, and the warranty service can only be obtained at a designated EcoFlow repair center.

To repair the product in an EcoFlow repair center when the product was purchased in another region, depending on part availability, customers can obtain a cross-regional repair service at an additional charge. (Some products do not support cross-regional repair even if the customer is willing to pay for the service. For more details, please contact EcoFlow Support.)

A cross-regional replacement service is not available for different versions of the same product.

The customer will need to bear customs duties, taxes, customs clearance, and other costs incurred for a cross-regional repair, regardless of whether it is the warranty or paid repair service. 

Valid Proof of Purchase

  • A purchase order number made through ecoflow.com;
  • Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.

Warranty Registration

  • Register your warranty at https://www.ecoflow.com/us/support/warranty 

Return Material Authorization (RMA) process

  • Contact EcoFlow Customer Service Team at support@ecoflow.com or +1 (800)-368-8604 (this number supports English service only. International charges apply if calling from outside of the US).
  • If your item is eligible for an EcoFlow Warranty, you will receive a prepaid shipping label. Please follow the instructions provided by EcoFlow Support to properly pack the products and return them safely.
  • Please note that we can only provide return shipping labels for return packages in United States. For returns in other countries and areas, please contact EcoFlow Support at support@ecoflow.com for more details.

Replacement 

  • In case of replacement, delivery of the replacement item will be arranged within 15 business days (subject to changes caused by force majeure) after confirming that the defective item has been received at our warehouse. The final resolution is subject to the availability of the replacement items.
  • The replacement warranty will be covered by a period equal to the remaining warranty period of the original item. 

Product FAQs

When using instruments to measure the AC power output, why are the L and N measurements reversed?

The portable power station is a floating-ground system, meaning that this type of detection equipment is likely to be ineffective. The detection equipment is designed to detect grounded output from grid power. The voltage difference between neutral and ground in the grid is very small, which is why there is a distinction between positive and reverse wiring. The device's AC output is generated by boosting the internal battery voltage through an inverter. Since there is no reference ground, testers may indicate reversed wiring. Furthermore, in the portable power station, both L and N are energized. When operating in inverter-only mode, the two wires can be regarded as equivalent, so the concept of reversed wiring does not apply. Think of it like this: AC voltage follows a sine wave pattern and its direction changes. As a result, the electric potential of L and N change relative to each other. On a microscopic timescale, current flows from high potential to low potential. However, since AC operates at 50 Hz, with 50 direction change cycles per second, the frequency is too high to distinguish. On a macroscopic level, the two wires appear the same during inversion. Many instruments will show the same peak voltage for both wires, so they can be regarded as equivalent with no distinction.

Does the Delta 3 Ultra or Delta 3 Ultra Plus support UPS-HID, and how does it establish communication with electronic devices?

Support. 1. Make sure the device (e.g., NAS device, PC, or laptop) supports UPS functionality. 2. Use a data cable to connect the USB-C-140W output port of the portable power station to the USB port of the device (supports USB 2.0 protocol). 3. After the connection is successful, go to the settings page for the device (e.g., NAS) and adjust the relevant settings.

What should I do if the device won't turn on?

1. Long-press the power supply button for at least 3 seconds to check whether the display turns on. 2. Connect an input to charge the device and check whether there is input power. If there is no response after 10 minutes, contact the after-sales team for assistance.

How much does DELTA 3 Ultra or DELTA 3 Ultra Plus weigh?

The DELTA 3 Max main unit weighs approximately 32.7kg The DELTA 3 Max main unit weighs approximately 33.7kg.