Rechargeable battery for EcoFlow DELTA Pro Ultra
Drone service
Rental
Reliability
Trust
Own warehouse 
Warranty
EcoFlow DELTA Pro Ultra Battery
Be ready for unexpected outages, cut your electricity bills, and keep your essential home devices running no matter what. The EcoFlow DELTA Pro Ultra EB is a high-capacity battery module designed for a next-generation power system. When paired with a compatible inverter (sold separately), it becomes a flexible and scalable energy solution with impressive performance, letting you power selected appliances for extended periods. The battery itself offers a 6 kWh capacity, expandable up to 30 kWh. It’s a great choice for anyone who wants more energy independence, reliable home backup, or a smarter way to use stored power. Please note: this battery operates only when connected to an inverter.
Why choose the EcoFlow DELTA Pro Ultra EB?
- 6 kWh battery capacity, expandable up to 30 kWh
- Designed to work with the EcoFlow DELTA Pro Ultra inverter
- Modular setup for easy system expansion
- Ideal for home backup power, off-grid use, and energy cost savings
- LFP battery chemistry for long lifespan and dependable performance
- Supports advanced energy management through the EcoFlow app
- Built for demanding environments with IP54 protection and auto-heating
Scalable up to 30 kWh – build the setup you need
Each DELTA Pro Ultra EB battery provides 6 kWh of capacity, giving you plenty of energy for essential devices and longer backup times. Need more? You can connect up to five units for a total of 30 kWh. Thanks to the modular design, expanding your setup is quick and convenient, without the need for complicated tools or a difficult installation process.
Flexible charging options for everyday convenience
The EcoFlow DELTA Pro Ultra system offers highly flexible charging possibilities, so you can top up your energy storage in the way that best suits your situation. Depending on the system configuration, charging can be supported via solar panels, EV charging stations, a generator, or a standard wall outlet. Dual-source charging is also possible, helping the system reach very high input power for faster energy recovery. This means less waiting and more readiness when you need backup power the most.
Easy integration with your home power setup
When used with a compatible manual transfer switch (sold separately), the DELTA Pro Ultra system can support your home electrical installation with greater flexibility. It allows you to switch between grid power and the EcoFlow system with ease, making it easier to use stored solar energy during the evening or at night. This can help reduce your reliance on the grid while also giving you extra peace of mind during outages.
Reliable UPS backup for critical devices
Power outage? No problem. In a complete setup with the inverter, the DELTA Pro Ultra supports online UPS functionality with switchover in as little as 20 ms. That helps keep important devices such as refrigerators, computers, and other essential electronics running smoothly during sudden interruptions.
Smart control with the EcoFlow app
The EcoFlow app makes daily operation simple and intuitive. You can monitor energy flow, battery level, and power usage in real time, create charging and discharging schedules, adjust operating modes, and optimize your entire energy system. The app also works with selected smart home ecosystems and compatible brands, making it easier to build a more connected setup.
Ready for demanding conditions
The EcoFlow DELTA Pro Ultra is built to perform in tough environments. It features auto-heating for cold-weather operation and can work in temperatures from -20°C to 45°C. X-Cooling technology helps maintain efficient thermal performance, while the IP54 rating offers protection against dust and splashes. Inside, the high-grade LFP battery delivers strong durability, supported by a BMS and cell-balancing technology for stable long-term operation.
Surprisingly quiet operation
Despite its serious energy capabilities, the EcoFlow DELTA Pro Ultra system can operate very quietly. At loads below 2000 W, the noise level can be as low as 0 dB, making it a practical choice for use at night, while working, or anywhere quiet operation matters.
Well-thought-out design for home, cabin, and beyond
This battery module is designed for versatile use across many scenarios, from single-family homes and vacation cabins to mobile and professional applications. With its modular construction and an optional transport trolley available separately, the system can be moved more easily wherever power is needed. It’s also a strong fit for workshops, offices, film sets, events, and other places where dependable backup energy makes a real difference.
Use energy smarter and save on bills
As part of an intelligent energy storage setup, the DELTA Pro Ultra EB can help reduce electricity costs. Self-powered operation allows you to prioritize stored solar energy before drawing power from the grid. Combined with charging and discharging schedules, this gives you more control over your energy usage and can help lower everyday power expenses.
What’s in the box
- DELTA Pro Ultra EB battery
- Battery connection cable (0.2 m)
General Specifications
| Model | EFYJ751-BP |
|---|---|
| Name | Rechargeable Li-ion battery pack |
| Weight | 50.7 kg |
| Dimensions | 660 × 455 × 204 mm |
| Capacity | 102.4 V = 60 Ah, 6144 Wh |
Battery
| Cell Type | LFP |
|---|---|
| Cycle Life | ≥80% SOH after 3500 cycles at 25°C (0.5C/0.5C) |
| Protection | Overvoltage, overload, overheat, short-circuit, low-temperature, low-voltage, and overcurrent protection |
Additional Information
| Discharge Temperature | -20°C to 45°C |
|---|---|
| Charge Temperature | -20°C to 45°C |
| Storage Temperature | -20°C to 45°C (optimal: -20°C to 45°C) |
| Maximum Operating Altitude | ≤3000 m |
| Ingress Protection Rating | IP54 |
Specification Rechargeable battery for EcoFlow DELTA Pro Ultra
Get expert advice