3600W Output, 7200W Surge—Powerful. Stable. Built to Handle It All
DELTA 3 Ultra Plus 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.

EcoFlow DELTA 3 Ultra Plus Common Features
- 3600W Powerful Output: 7200W surge output. With X-Boost™ mode, it supports heavy-duty appliances up to 4600W, such as clothing steamers, electric dryers, lawnmowers, and electric frying pans.
- 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.
- 2 Easy Ways to Connect to Your Home: Manual Transfer Switch and Inlet Box.
- 10ms Auto-Switch: keep critical devices like NAS systems and servers running smoothly.
- 25dB Whisper-Quiet Operation: Ultra-low noise (≤25dB at 600W).
- 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.
- Up to 5-Year Warranty: Includes a 3-year standard warranty and a 2-year extended warranty available upon EcoFlow App registration.
Go Hybrid—Extend Backup with a Smart Generator
Pair DELTA 3 Ultra Plus with an EcoFlow Smart Generator to achieve longer runtime—automatically switching between fuel and battery to keep you powered through multi-day outages or off-grid adventures.

EcoFlow DELTA 3 Ultra Plus Specifications
| Net Weight | 33.7±0.6kg | Dimensions (HWD) | 613.1mm×327.71mm×394.95mm |
| Rated Capacity | 3072Wh 51.2V 60Ah | Cell Chemistry | LFP (LiFePO4) |
| AC Output | 120V~60Hz 3600W total (surge 7200W), 20A(x4) Max per port, 30A(x1) Max per port | X-Boost | 4600W |
| 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) USB-C(x2): 5/9V/12V/15V-3A 20V-2.25A, 45W Max per port, total 45W |
| Cigarette Lighter Output Port | 12.6V, 10A, 126W Max | AC Input (Charge Only) | 100-120V~15A 50/60Hz |
| Maximum PV Input Power(W) | 1600W | Optimal operating temperature | 20°C to 30°C (68°F to 86°F) |
| Charge Temperature | 0°C-45°C(32°F-113°F) | Discharge Temperature | -10 to 45°C(14°F-113°F) |
| Storage Temperature | -10 to 45°C(14°F-113°F) | Warranty | 5-Year Warranty *Includes 3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration. |
| Communication Method | Wi-Fi & Bluetooth | EMC | Class B |
| UPS | <10ms | ||
6 Ways to Charge Up — Ready in Just 48 Mins
- Wall Charging
1800W Input, 0-80% in 89 mins. EcoFlow’s exclusive Storm Guard Mode 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. - Generator Charging
Charges at up to 3200W via smart generator—0–80% in 53 minutes. With exclusive Generator Auto Start/Stop Mode, the EcoFlow Smart Generator 4000 (Dual Fuel) recharges DELTA 3 Ultra Plus automatically when battery levels run low—delivering hands-free backup power for storms, outages, and off-grid use. - Solar Charging
1600W input, 0–80% in 101 mins. After the storm clears, just 101 minutes of sunlight is all it takes to recharge DELTA 3 Ultra Plus. Pair it with EcoFlow 400W Solar Panels (25% high-efficiency) for reliable power during camping trips, van life, or off-grid living. - Alternator Charging
1000W Input, 0-80% in 142 mins. With EcoFlow Alternator Charger Plus 1000, get ready in just over 2 hours while on the move—10× faster than conventional solutions. - Solar + Generator Dual Charging
3960W Input, 0-80% in 48 mins. Fastest charge in just 48 mins with 3960W dual input from solar panels and the Smart Generator 4000. - Solar + Alternator Dual Charging
2600W Input, 0-80% in 60 mins. Dual input from 1600W solar and 1000W alternator charging keeps you powered faster than ever, even on the go.
EcoFlow DELTA 3 Ultra Series
| Model Name | Early Price | Details | |
|---|---|---|---|
![]() | EcoFlow DELTA 3 Ultra | View Product | |
![]() | EcoFlow DELTA 3 Ultra Plus | View Product | |
![]() | EcoFlow DELTA 3 Max | View Product | |
![]() | EcoFlow DELTA 3 Max Plus | View Product | |
![]() | EcoFlow DELTA 3 Classic | $599.00 – $409.00 | View Product |
Built to Last
From battery chemistry to structural design, DELTA 3 Ultra Plus is engineered for extreme durability, environmental resilience, and whisper-quiet performance—delivering power you can count on for over 10 years.
- Battery Protection
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. - CTC Structure
Built with a cell-to-chassis (CTC) structure, DELTA 3 Ultra Plus is drop-resistant (0.2m) —protecting against overnight condensation and off-road bumps during transport. You get stable power even in the most demanding conditions. - Durable Qualities
DELTA 3 Ultra Plus keeps your power flowing through freezing cold, scorching heat, humid environments (95% humidity tolerance), or coastal air (5% salt spray resistance). - Class B Certified
Certified to Class B EMC standards, it won’t interfere with TVs, Wi-Fi, or other home electronics. - 25dB
Powered by X-Quiet™ 3.0, EcoFlow’s stepless fan control adjusts airflow smoothly to maintain precise thermal regulation—keeping your home or workspace peacefully quiet, even under heavy loads.
What’s in The Box
- EcoFlow DELTA 3 Ultra Plus 1x
- AC Charging Cable 1x
- Manuals & Warranty Card 1x
EcoFlow Stores
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