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.
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.
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.
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.
Wall Charging
1800W Input, 0-80% in 89 mins. [7] EcoFlow’s exclusive Storm Guard Mode [8] 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, [9] 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.
Alternator Charging
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]
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.
Easily Scales Up—From Hours to Days
3–11kWh expandable capacity
Compatible with Smart Generators for unlimited runtime
Half-Day Outage
1-Day Outage
2-Day Outage
* Require connecting 1*DELTA 3 Ultra Plus (3072Wh) + 2* DELTA 3 Max Plus (2048Wh) Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. The EcoFlow Extra Battery Expansion Adapter will be released soon.
3-Day Outage
* Require connecting 1*DELTA 3 Ultra Plus (3072Wh) + 2* DELTA Pro 3 Smart Extra Battery with EcoFlow Smart Extra Battery Expansion Adapter. The EcoFlow Extra Battery Expansion Adapter will be released soon.
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.
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, 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 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.
Compatibility
