








Real discussions from product enthusiasts
Whole-Home Power: 7200W Output Meets 240V Needs
The DELTA Pro Ultra delivers a substantial 7200W continuous output with 120/240V split-phase capability, enabling it to power heavy household appliances, including a 3-ton central air conditioner. This positions it as a robust solution for home backup scenarios.
Scalable Power: From 6kWh to 90kWh Capacity
Designed for flexibility, the system starts with a 6.1kWh battery but offers extensive expandability. Users can add battery modules to reach a maximum capacity of 90kWh, catering to diverse and long-term power requirements for residences.
Rapid Recharging: 2-Hour Full Charge Capability
The 6.1kWh battery unit can be fully recharged in approximately 2 hours. This rapid replenishment is achievable through multiple input sources, including AC wall outlets, EV chargers, and solar power integration.
Expert answers based on real user experience
Users report the 7200W continuous output, supporting 120/240V split-phase, effectively powers demanding appliances. Testimonials indicate it can run a 3-ton central air conditioner without issue, demonstrating its capability to manage significant loads during power outages. The seamless 0-20ms auto-switchover, particularly when paired with the Smart Home Panel 2, ensures uninterrupted operation for key home circuits, providing peace of mind during grid failures.
r/Ecoflow_community, Review Sites
The DELTA Pro Ultra is designed for rapid replenishment. With its 6.1kWh LiFePO4 battery, users can achieve a full charge in approximately 2 hours. This is facilitated by various charging inputs, including standard wall outlets, dedicated EV charging ports, and solar panels, allowing for flexible power recovery, even during extended outages and ensuring readiness for emergencies.
Review Sites, Product Pages
The modular design allows significant scalability. The base unit provides 6.1kWh, but it can be expanded with additional battery modules, reaching up to a total capacity of 90kWh. This configuration caters to diverse power requirements, from basic emergency backup to powering an entire household for days, offering flexibility for long-term resilience and future-proofing energy needs.
DIY Solar Power Forum, Review Sites
Community discussions have surfaced issues where battery charge levels appeared to drift apart or uneven discharging occurred, possibly due to firmware. While some users reported these challenges, customer service and firmware updates have been cited as resolutions, aiming to ensure consistent battery performance across connected modules and maintain overall system reliability.
r/Ecoflow_community
Reports indicate potential Radio Frequency Interference (RFI) from the unit, even in an off state. While a Faraday cage was suggested by support, its practical application for a whole-home system is complex. Further analysis suggests RFI can stem from high-frequency switching in the inverter circuitry. Effective mitigation might involve careful placement away from sensitive electronics and ensuring solid shielding in the installation environment, though specific RFI suppression standards for this consumer-grade unit are not widely published.
r/Ecoflow_community
The DELTA Pro Ultra utilizes Lithium Iron Phosphate (LiFePO4) cells, known for their extended cycle life, typically exceeding 3,000 cycles before significant degradation (e.g., to 80% of original capacity). Under a scenario of daily partial discharge and recharge cycles, expect minimal capacity loss year-over-year. For home backup use, where cycles are less frequent, the lifespan could extend well beyond a decade, maintaining reliable power delivery.
EF ECOFLOW
Get notified when the price drops
EF ECOFLOW EF ECOFLOW Power Station DELTA Pro Ultra 6144Wh, 120/240V 7200W AC Output, Lifepo4 Home Battery Backup Expandable to 90kWh, 2H to Full Charge, Solar Generator for Home Use, Emergency, Camping, RV. Features: One Powers All. The unit of DELTA Pro Ultra whole house generator includes an....
| UPC | 842783132918 |
| ASIN | B0CQXMZ5BK |
| Colour | Silver |
| Runtime | 2 hours |
| Voltage | 120 Volts (AC) |
| Wattage | 7200 watts |
| Frequency | 50 Hz |
| Fuel Type | Battery, Solar |
| Brand Name | EF ECOFLOW |
| Model Name | EFYJ751 |
| Engine Type | Inverter |
| Is Electric | Yes |
| Item Weight | 84.55 kg |
| Manufacturer | Ecoflow |
| Model Number | EFYJ751 |
| Power Source | Battery Powered |
| Material Type |
-99%Club House
Club House, Quality Natural Herbs & Spices, Signature Blend, Roasted Garlic&Pepper 144g
-99%Welch's
Welch's Fruit Snacks, Mixed Fruit & Berries 'N Cherries, Bulk Pack, Gluten Free, Individual Single Serve Bags, 22g (Pack of 72)
-99%Old Bay
Old Bay
-98%Ivanhoe Nothing But Cheese
Ivanhoe Nothing But Cheese
Product Specifications, Expert Analysis
| Metal, LFP, Plastic, Rubber, Copper |
| Item Type Name | portable power station |
| Output Wattage | 7200 |
| Running Wattage | 7200 Watts |
| Starting Wattage | 12000 Watts |
| Additional Features | Dual Voltage, Expandable Capacity |
| Included Components | DELTA Pro Ultra |
| Total Power Outlets | 9 |
| Engine Power Maximum | 21.6 Kilowatts |
| Ignition System Type | Electric |
| Warranty Description | 5 Year |
| Manufacturer Part Number | EFYJ751-BP |
| Item Dimensions L x W x H | 69L x 48.1W x 21.4H Centimetres |
| Recommended Uses For Product | Residential |
| Manufacturer Contact Information | EcoFlow |
| Global Trade Identification Number | 00842783132918 |