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Ecoflow DELTA Pro Ultra X Battery

Ecoflow DELTA Pro Ultra X Battery

BY: EcoFlow | SKU: EFDELTAPROUXEB Availability: In Stock
$3,299.00
$2,399.00
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Ecoflow DELTA Pro Ultra X Battery

Power your home, RV, or business with the EcoFlow DELTA Pro Ultra X Battery — a high-capacity 6kWh LiFePO₄ module designed for long-lasting energy storage and intelligent performance. Engineered to pair seamlessly with the DELTA Pro Ultra X Inverter, this modular battery delivers robust safety, superior power density, and reliable operation across demanding environments.

Built with advanced BMS protection, stackable design, and smart connectivity, it’s the perfect companion for hybrid solar setups, whole-home backup, and expandable off-grid systems.

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EcoFlow DELTA Pro Ultra X Battery Features

High Energy Density - Each battery provides 6.14kWh of storage (102.4V/60Ah), allowing you to scale up your energy capacity for full-day power coverage or long-term backup.

Durable LFP Chemistry - Equipped with LiFePO₄ cells, the DELTA Pro Ultra X Battery ensures excellent thermal stability, long cycle life, and consistent performance even under heavy daily use.

Comprehensive Safety System - Integrated overvoltage, overload, short-circuit, and temperature protections safeguard both your inverter and connected devices.

Smart Modular Design - Expand your setup by pairing multiple battery modules — ideal for larger households, RV systems, and hybrid solar applications.

Wide Operating Range - Performs reliably from -4°F to 113°F, making it suitable for both indoor and outdoor energy systems.

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EcoFlow DELTA Pro Ultra X Battery Applications

  • Whole-home backup systems – Ensure uninterrupted power during outages and high-demand periods.
  • Off-grid solar setups – Store renewable energy for sustainable, 24-hour independence.
  • RV and mobile living – Compact, high-capacity design for extended off-grid adventures.
  • Commercial energy storage – Power critical systems and reduce grid reliance for businesses.
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What's Included

Everything you need is included with your product.

  • 1 x Ecoflow Smart Extra Battery (DELTA Pro Ultra X)
  • x Ecoflow Battery Connection Cable (0.65ft)
  • 1 x User Manual & Warranty Card
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Warranty

  • 5 years Warranty

EcoFlow 6kWh Battery ( DELTA Pro Ultra / Ultra X) Specifications

Specification Details
Model EFYJ751-BP
Net Weight Approx. 50.5 kg (111.3 lb)
Dimensions Approx. 660 × 455 × 204 mm (26 × 18 × 8 in.)
Capacity 102.4V⎓60A 6,144Wh
Cell Material LFP（LiFePO4）
Protection Type Overvoltage protection, Overload protection, Overtemperature protection, Short circuit protection, Low temperature protection, Low voltage protection, Overcurrent protection
Operating Temperature －20℃ to 45℃ (－4℉ to 113℉)
Storage Temperature －20℃ to 45℃ (－4℉ to 113℉)
Operating Humidity ＜90%
Altitude ＜3000m

Frequently Asked Questions

Can the DELTA Pro Ultra X Battery be used independently?

No. It is designed to work in conjunction with the EcoFlow DELTA Pro Ultra X Inverter as part of a complete energy system.

How many batteries can I connect?

You can connect up to 10 batteries per inverter, allowing up to 61.4kWh total capacity with one unit and 184.32kWh with three inverters.

What protections are built in?

The integrated BMS provides overvoltage, overcurrent, temperature, and short-circuit protection to ensure long-term safety and performance.

Is it suitable for off-grid or hybrid solar use?

Yes — the battery pairs perfectly with hybrid solar systems for both grid-tied and off-grid operation.