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DELTA 3 Ultra Plus+DELTA 3 Max Plus Extra Battery - King of Generators
Availability:
in stock, ready to be shipped
by EcoFlow

DELTA 3 Ultra Plus+DELTA 3 Max Plus Extra Battery

$1,899.00 - $1,899.00
$1,899.00
$1,899.00 - $1,899.00
$1,899.00
SKU D3UP-D3MPEB

Description

3kWh Portable Power Station with Smart Output Priority Tech

EcoFlow DELTA 3 Ultra Plus (3072Wh)

Long-Lasting Portable Home Backup. Exceptional Performance.

3600W Output & 7200W Surge - Power for Every Situation

The DELTA 3 Ultra Plus (3072Wh) provides a stable 3600W continuous output and up to 7200W surge power. With X-Boost™ 3.0, it can support devices requiring up to 4600W, making it suitable for heavy-duty appliances. Its high-precision inverter uses a DSP chip that analyzes AC voltage and current every 33μs, delivering a pure sine wave with exceptional stability, safe for powering sensitive electronics.

Expandable Backup Power - From Hours to Multiple Days

Easily increase total capacity from 3–11kWh, giving you extended runtime during outages or off-grid use. The system also works with EcoFlow Smart Generators for virtually unlimited backup power.

Under typical conditions, it can cover essential devices for 4–10 hours, keeping refrigerators cold, heating systems active, lights on, and communication devices powered. 33

Expansion requires 1 × DELTA 3 Ultra Plus and either 2 × DELTA 3 Max Plus Smart Extra Batteries or 2 × DELTA Pro 3 Smart Extra Batteries, using the EcoFlow Smart Extra Battery Expansion Adapter. The adapter is expected to be available in the U.S. around January 2026.

Hybrid Backup with Smart Generator Support

Combine the DELTA 3 Ultra Plus (3072Wh) with an EcoFlow Smart Generator 66 to extend runtime even further. The system can automatically shift between battery power and fuel to keep you running through prolonged outages or remote adventures.

Simple Home Integration + Ultra-Fast Charging

Choose from two easy home-connection options. With six charging methods, the DELTA 3 Ultra Plus rapidly recharges, reaching 80% in roughly 89 minutes with 1800W AC input. 99

EcoFlow’s Storm Guard Mode 1010 automatically boosts AC charging when severe weather alerts are detected, ensuring the unit is fully ready before an emergency. With X-Stream fast-charging, the system can be fully charged in as little as 48 minutes under optimal conditions. 11

Engineered for Long-Term Reliability

Built with automotive-grade full-tab LFP cells, a durable exterior, and an intelligent BMS, this unit is designed for long operational life and enhanced safety. Its structure and internal components support over a decade of dependable use when maintained properly. 22

The advanced ARM Cortex–powered BMS monitors temperature, SOH, SOC, and more in real time, improving efficiency, protecting the battery, and extending its lifespan.

Smart Monitoring & Complete Control

Track power consumption, solar production, and cost savings in an intuitive dashboard. View battery levels, live electricity rates, and real-time usage stats directly through the EcoFlow app.

3600W Output, 7200W Surge—Powerful. Stable. Built to Handle It All

6 Ways to Charge Up — Ready in Just 48 Mins <sup>[1]</sup>
Built to Last


Specifications

Net Weight: 33.7±0.6kg
Dimensions (H × W × D): 613.1mm × 327.71mm × 394.95mm

Rated Capacity: 3072Wh (51.2V, 60Ah)
Cell Chemistry: LFP (LiFePO4)

AC Output

  • 120V~60Hz, 3600W total (7200W surge)

  • 20A × 4 max per port

  • 30A × 1 max per port

X-Boost: 4600W supported load

USB Outputs

USB-A (x1): 5V–3A / 9V–2A / 12V–1.5A (18W max)

USB-C:

  • 1× (HID): 5/9/12/15V–3A, 20V/28V–5A (140W max)

  • 2×: 5/9/12/15V–3A, 20V–2.25A (45W max per port, 45W total)

DC Ports

12V DC Output:

  • 12.6V–30A (378W total)

  • Anderson: 30A max (shared with car port)

Cigarette Lighter Port:

  • 12.6V–10A (126W total)

  • CAR: 10A max (shared with Anderson)

AC Input (Charging)

100–120V~15A, 50/60Hz

Solar (PV) Input

Max Input: 1600W

Temperature Ranges

  • Optimal Operating: 20°C–30°C (68°F–86°F)

  • Charging: 0°C–45°C (32°F–113°F)

  • Discharging: -10°C–45°C (14°F–113°F)

  • Storage: -10°C–45°C (14°F–113°F)

Warranty

5 years total
(3-year standard + 2-year extension via EcoFlow App)

Connectivity

Wi-Fi & Bluetooth

UPS Transfer Time

<10ms


What's in the Box

  1. The 0–80% charging time of 48 minutes was recorded under optimal conditions using the EcoFlow Smart Generator 4000 (Dual Fuel) together with solar panels, delivering a combined input of 3960W.

  2. When used appropriately, the DELTA 3 Ultra Plus (3072Wh) is projected—based on internal simulation testing—to offer an approximate 10-year lifespan. Actual results may differ for individual users.

  3. Backup runtime estimates for multiple appliances are based on ideal laboratory testing; real-world performance may vary.

  4. Expanding the system with 1 × DELTA 3 Ultra Plus and 2 × DELTA 3 Max Plus Smart Extra Batteries requires the EcoFlow Smart Extra Battery Expansion Adapter, which will be available soon.

  5. Expansion with 1 × DELTA 3 Ultra Plus and 2 × DELTA Pro 3 Smart Extra Batteries also requires the forthcoming EcoFlow Smart Extra Battery Expansion Adapter.

  6. EcoFlow Smart Generators are sold separately.

  7. The Manual Transfer Switch is sold separately.

  8. This accessory is not included and must be purchased separately.

  9. All charging-speed specifications originate from EcoFlow Labs and are intended for reference. Actual performance can vary depending on environmental conditions, device status, software version, and other usage factors.

  10. Storm Guard and related features require activation in the EcoFlow App before use.

  11. To enable this function, connect the DELTA 3 Ultra Plus (3072Wh) to a Smart Generator using the designated charging cable and activate the preset in the EcoFlow App. Communication is supported via Bluetooth or Wi-Fi.

  12. EcoFlow Solar Panels are sold separately.

  13. The EcoFlow Alternator Charger Plus 1000 is coming soon and will be sold separately.

  14. Performance comparison is based on charging via a standard vehicle cigarette-lighter port.

  15. EF Full-Tab LFP Cells feature an internal resistance of 1.5mΩ, which is 25% lower than the 2mΩ resistance of the previous EF #C33 cell.

  16. A 25% reduction in internal resistance leads to a proportional 25% reduction in heat generation, according to the equation Q = I²Rt under the same current conditions.

  17. Unless otherwise indicated, all data is provided by EcoFlow Labs for reference only. Actual performance may vary based on environmental and operational factors.

  18. Noise measurements were taken at a 1-meter distance in a 25°C environment, recording ≤25dB (600W) during both charging and discharging.

  19. Unless otherwise specified, all product images, videos, and on-screen visuals are for reference only. Actual product appearance, color, size, interface, and display content may differ.


Warranty

Warranty Policy – King of Generators

At King of Generators, we are committed to ensuring you have a seamless experience with your purchase. Below is an overview of the EcoFlow warranty policy to help you understand coverage and how to make a warranty claim through King of Generators support.

 

 

Warranty Period Overview

EcoFlow provides a limited warranty on its products, starting from the date of purchase. The warranty period varies by product type:

  • DELTA Series & RIVER Series: 1–5 years (depending on model)

  • Solar Panels: 12 months to 10 years

  • Accessories: 12 months

  • Smart Generators: 1–3 years

For detailed coverage, refer to the product-specific warranty on EcoFlow’s official website or contact King of Generators support.

 

 

What’s Covered?

  • Free repairs or replacements for defects in materials or workmanship

  • Warranty extensions are available for select products upon registration on EcoFlow’s website

 

 

What’s Not Covered?

The warranty does not cover:

  • Damage due to misuse, unauthorized modifications, or external factors (e.g., water, weather)

  • Products purchased from unauthorized sellers or without valid proof of purchase

  • Products used outside the intended region or incompatible with local power standards

Note: EcoFlow products are designed for use in the U.S. Warranty claims for malfunctions due to use outside the country may not be covered.

 

 

How to Make a Warranty Claim

If you experience any issues, please contact King of Generators support to initiate a warranty claim.

📞 Phone: (855) 799-2943
📧 Email: info@kinggenerators.com

Our team will assist you with the claim process, including verifying your purchase, troubleshooting the issue, and coordinating with EcoFlow for repair or replacement.

Once approved, we will provide further instructions, including shipping details and estimated resolution time.

 

 

For any questions regarding warranty coverage, feel free to contact King of Generators support. We're here to help!

 

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