ECOFLOW
DELTA 3 ULTRA PLUS
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.
X-Fusion™ 3.0 Tech
When in bypass mode and connected to the grid or generator to power appliances via an AC outlet, X-Fusion overrides grid/generator electricity with inverter power
Unlike other portable power stations limited by 1800W grid input when charging, you get higher power for your appliances, enjoying full 3600W output at all times.
Smart Output Priority Tech
Pick Your Priority Outputs, Extend What Matters Most. Manage each outlet remotely from your phone. Prioritize essentials like your fridge or medical devices to extend runtime when it counts most.
Run Outdoor Gear. Power Your RV. Charge Your Essentials— One Station Powers it All
Whether you're parked at camp or on the road, the two DC ports—Anderson[3] and car cigarette port—keep 12V gear running, from portable car fridges to car vacuums and air pumps. When you need more power, the TT-30 port enables support for your entire RV setup. And for everyday use, the high-power USB-C port fast-charges laptops and phones with ease.
6 Ways to Charge Up — Ready in Just 48 Mins[4]
1800W Input, 0-80% in 89 mins. [5] EcoFlow’s exclusive Storm Guard Mode [6] 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.
1600W input, 0–80% in 101 mins. After the storm clears, just 101 mins 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. [7]
Charges at up to 3200W via smart generator—0–80% in 53 minutes. With exclusive Generator Auto Start/Stop Mode, [8] 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.
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. [9]
1000W Input, 0-80% in 142 mins. With EcoFlow Alternator Charger Plus 1000, [10] get ready in just over 2 hours while on the move—10× faster than conventional solutions. [11]
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.
Easily Scales Up—From Hours to Days
3–11kWh expandable capacity[12]
Compatible with Smart Generators for unlimited runtime
* Require connecting 1*DELTA 3 Ultra Plus (3072Wh) + 2* DELTA 3 Max Plus (2048Wh) Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. [20]
* Require connecting 1*DELTA 3 Ultra Plus (3072Wh) + 2* DELTA Pro 3 Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter.[15]
Go Hybrid—Extend Backup with a Smart Generator
Pair DELTA 3 Ultra Plus (3072Wh) with an EcoFlow Smart Generator [5] to achieve longer runtime—automatically switching between fuel and battery to keep you powered through multi-day outages or off-grid adventure.
Two Easy Ways to Connect to Your Home
Deeper Insights, Easier Control
Monitor your energy usage, savings, and solar generation—all with one intuitive dashboard. Easily track battery status, real-time electricity rates, and financial savings.
Cut Costs, Not Comfort
DELTA 3 Ultra Plus intelligently optimizes energy usage to help lower your electricity bills while powering your home sustainably. Set automated tasks to charge during off-peak evening hours and discharge during the day. To use this feature, update the software to V6.15 or above and upgradethe firmware to V7.80.99.52 or above.[16]
Long-Lasting, Durable, Always Ready for Emergencies
Automotive-Grade Full-Tab LFP Cells
Rugged exterior and intelligent BMS for unmatched reliability
Unrivaled Balance for Unmatched Battery Longevity
With 27% fewer cells per kWh, [19] our 16-cell design runs cooler, lasts longer, and delivers greater stability. Each cell is rigorously tested for capacity, voltage, and internal resistance—resulting in a highly uniform pack that protects against overcharging, imbalance, and premature wear.
Built to Last
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.
Built with a cell-to-chassis (CTC) structure, DELTA 3 Ultra Plus (3072Wh) 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. [20]
DELTA 3 Ultra Plus (3072Wh) keeps your power flowing through freezing cold, scorching heat, humid environments (95% humidity tolerance), or coastal air (5% salt spray resistance). [20]
Certified to Class B EMC standards, it won’t interfere with TVs, Wi-Fi, or other home electronics.
![25dB<sup>[21]</sup>](https://us.ecoflow.com/cdn/shop/files/10-5-tuya_a228b237-8aba-4430-b41b-050ef36164a9.jpg?v=1778846538)
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.
See It in Action
By YouTuber @SnowAndCurt
Compatibility
What's In The Box
- [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 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] DELTA 3 Ultra Plus features an Anderson port, while DELTA 3 Ultra does not.
- [4] 0-80% in 48 minutes was measured in optimal conditions using the EcoFlow Smart Generator 4000 (Dual Fuel) and Solar Panels, total 3960W input (DELTA 3 Ultra Plus). DELTA 3 Ultra supports four charging methods and reaches 0-80% in as fast as 89 minutes via AC input or theEcoFlow Smart Generator 4000 (Dual Fuel).
- [5] 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.
- [6] Feature requires preset activation via the EcoFlow App.
- [7] EcoFlow Solar Panels are sold separately.
- [8] To enable this feature, connect DELTA 3 Ultra Plus to the Smart Generator using the charging cable and enable the preset in the EcoFlow App. Communication is handled via Bluetooth or Wi-Fi.
- [9] EcoFlow Smart Generators are sold separately.
- [10] EcoFlow Alternator Charger Plus 1000 will be launched soon and is sold separately.
- [11] Compared with car cigarette port charging.
- [12] DELTA 3 Ultra Plus is expandable, while DELTA 3 Ultra is not expandable.
- [13] Backup time based on ideal conditions; actual results may vary.
- [14] Require connecting 1*DELTA 3 Ultra Plus + 2* DELTA 3 Max Plus Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. Shop Smart Extra Battery Expansion Adapter.
- [15] Require connecting 1*DELTA 3 Ultra Plus + 2* DELTA Pro 3 Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. Shop Smart Extra Battery Expansion Adapter.
- [16] To use this feature, update the software to V6.15 or above and upgrade the firmware to V7.80.99.52 or above.
- [17] 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.
- [18] 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.
- [19] Compared with the previous usage of EF #C33 Battery Cell.
- [20] 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.
- [21] Noise levels measured at 1m under 25°C ambient: ≤25dB (600W) for charging/discharging.
- [22] Manual Transfer Swith is sold separately.
- [23] This accessory should be purchased separately.
- [24] 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.
SPECS
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
12V DC Output Port
12.6V-30A, 378W Total
Anderson: 30A Max (Shared power with car cigarette lighter)
Cigarette Lighter Output Port
12.6V-10A, 126W Total
CAR:10A Max (Shared power with Anderson port)
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
UPS
<10ms