DELTA 3 Ultra Plus (3072Wh) delivers 3600W rated-output (7200W surge) , with X-Boost™ 3.0 technology, it supports devices up to 4600W—effortlessly handling heavy-duty appliances. 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.
Compatible with Smart Generators for unlimited runtime
Covers essential power needs during a 4–10 hour outage—keeping food fresh, heat running, lights on, and communication devices charged. [3]
* Require connecting 1 × DELTA 3 Ultra Plus + 2 × DELTA 3 Max Plus Smart Extra Battery or 1 × DELTA 3 Ultra Plus + 2 × DELTA Pro 3 Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. The EcoFlow Extra Battery Expansion Adapter will be released US local by approximately the January, 2026.
Pair DELTA 3 Ultra Plus (3072Wh) with an EcoFlow Smart Generator [6] to achieve longer runtime—automatically switching between fuel and battery to keep you powered through multi-day outages or off-grid adventure.
1800W Input, 0-80% in 89 mins. [9] EcoFlow’s exclusive Storm Guard Mode [10] monitors severe weather alerts and automatically triggers AC charging remotely using industry-leading X-Stream fast charging tech—so it can be ready long before a disaster hits.
![6 Ways to Charge Up — Ready in Just 48 Mins <sup>[1]</sup>](https://us.ecoflow.com/cdn/shop/files/8-1-tuya.jpg?v=1758511749)
Rugged exterior and intelligent BMS for unmatched reliability
From battery chemistry to structural design, DELTA 3 Ultra Plus (3072Wh) is engineered for extreme durability, environmental resilience, and whisper-quiet performance—delivering power you can count on for over 10 years. [2]
EcoFlow’s advanced BMS uses a high-performance ARM Cortex chipset and intelligent algorithms to monitor your battery in real time. By tracking SOC, SOH, temperature, and more, it ensures peak performance, extended battery life, and worry-free operation.
Monitor your energy usage, savings, and solar generation—all with one intuitive dashboard. Easily track battery status, real-time electricity rates, and financial savings.
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Net Weight 33.7±0.6kg |
Dimensions (HWD) 613.1mm×327.71mm×394.95mm |
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Rated Capacity 3072Wh 51.2V 60Ah |
Cell Chemistry LFP(LiFePO4) |
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AC Output 120V~60Hz 3600W total (surge 7200W), |
X-Boost 4600W |
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USB-A Output USB-A(x1): 5V-3A/9V-2A/12V-1.5A, 18W Max |
USB-C Output USB-C(x1): 5/9/12/15V-3A, 20V/28V--5A, 140W Max(HID) |
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12V DC Output Port 12.6V-30A, 378W Total |
Cigarette Lighter Output Port 12.6V-10A, 126W Total |
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AC Input (Charge Only) 100-120V~15A 50/60Hz |
Maximum PV Input Power(W) 1600W |
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Optimal operating temperature 20°C to 30°C (68°F to 86°F) |
Charge Temperature 0°C-45°C(32°F-113°F) |
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Discharge Temperature -10 to 45°C(14°F-113°F) |
Storage Temperature -10 to 45°C(14°F-113°F) |
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Warranty 5-Year Warranty |
Communication Method Wi-Fi & Bluetooth |
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UPS <10ms |
[1] 0-80% in 48 minutes was measured in optimal conditions using the EcoFlow Smart Generator 4000 (Dual Fuel) and Solar Panels, total 3960W input.
[2] Based on proper product usage, DELTA 3 Ultra Plus (3072Wh) is estimated to have a lifespan of approximately 10 years, according to internal simulation test data. This information is for reference only; actual user experience may vary.
[3] Multiple appliances' backup time based on ideal conditions; actual results may vary.
[4] Require connecting 1*DELTA 3 Ultra Plus + 2* DELTA 3 Max Plus Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. The EcoFlow Extra Battery Expansion Adapter will be released soon.
[5] Require connecting 1*DELTA 3 Ultra Plus + 2* DELTA Pro 3 Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. The EcoFlow Extra Battery Expansion Adapter will be released soon.
[6] EcoFlow Smart Generators are sold separately.
[7] Manual Transfer Swith is sold separately.
[8] This accessory should be purchased separately.
[9] All charging speed data comes from EcoFlow labs and is for reference only. The actual data may vary slightly depending on the usage environment, device condition, software version, and other factors.
[10] Feature requires preset activation via the EcoFlow App.
[11] To enable this feature, connect DELTA 3 Ultra Plus (3072Wh) to the Smart Generator using the charging cable and enable the preset in the EcoFlow App. Communication is handled via Bluetooth or Wi-Fi.
[12] EcoFlow Solar Panels are sold separately.
[13] EcoFlow Alternator Charger Plus 1000 will be launched soon and it's sold separately.
[14] Compared with car cigarette port charging.
[15] Refers to the internal resistance of EF Full-Tab LFP Cells being 1.5mΩ, which is 25% lower than the 2mΩ internal resistance of the previous EF #C33 Battery Cell.
[16] A 25% reduction in single-cell internal resistance. According to the heat generation formula Q = I²Rt, under the same current, a 25% reduction in resistance leads to a proportional 25% decrease in heat generation.
[17] Unless otherwise noted, all above data comes from EcoFlow labs and is for reference only. The actual data may vary slightly depending on the usage environment, device condition, software version, and other factors.
[18] Noise levels measured at 1m under 25°C ambient: ≤25dB (600W) for charging/discharging.[19] Unless otherwise noted, all images, videos, and screen display contents about the product itself on this page are for reference only. Actual product effects (including but not limited to appearance, color, and size) and screen display contents (including but not limited to backgrounds, UI, and illustrations) may vary.
[19] Unless otherwise noted, all images, videos, and screen display contents about the product itself on this page are for reference only. Actual product effects (including but not limited to appearance, color, and size) and screen display contents (including but not limited to backgrounds, UI, and illustrations) may vary.
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.
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.
Free repairs or replacements for defects in materials or workmanship
Warranty extensions available for select products upon registration on EcoFlow’s website
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.
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!
