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EcoFlow DELTA Pro Ultra Battery Pack

Scale Your Home Backup With Modular LFP Storage

Restaurant-grade performance — sear at 1,000°F+ with infrared burners

304 stainless steel construction — rust-resistant, built to last decades

Ships fully assembled — wheel it out, fire it up same day

10-year warranty standard — industry-leading coverage on all burners

Price range: $1,842.95 through $4,825.95

EcoFlow DELTA Pro Ultra Battery Pack

$1,842.95 – $4,825.95

Number of Batteries

Clear

🔒 100% Secure Checkout

Free Returns 30-day hassle-free returns.

Free Delivery Every order, every time.

Ships in 3–5 Days Heavy-duty crating included.

4.9/5 Stars 2,400+ verified reviews.

Scale Your Home Backup With Modular LFP Storage

The EcoFlow DELTA Pro Ultra Battery delivers 6.144kWh of off-grid proven energy storage per unit, expandable up to 90kWh for serious home backup. This vetted LFP battery module integrates seamlessly with the DELTA Pro Ultra system, giving you the flexibility to scale your power as your needs grow. With a 3,500-cycle lifespan at 80%+ state of health, IP54 protection, and an operating range from −4°F to 113°F, it's built for real-world demand. A smart investment for anyone building a grid-independent home — financing available. Ships free.

FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT

6.144kWh Per Unit

3,500 Cycle Life

IP54 Protected

LFP Cell Chemistry

6.144kWh

Capacity Per Unit

90kWh

Max Expandable Capacity

102.4V

System Voltage

Feature. . This ensures long-lasting durability and consistent performance in demanding conditions. Professional-grade materials and expert engineering come together to deliver a product you can rely on day after day, job after job. Every detail has been carefully considered to maximize your satisfaction and minimize downtime.

Compatibility & Sizing

Confirm your space and system setup before ordering.

Compatible with EcoFlow DELTA Pro Ultra system only
Requires minimum 26 in × 18 in × 8 in clearance per unit
Supports 1, 2, or 3 battery configurations

Built For Real Demand

Where this battery earns its place.

Whole-Home Backup Power

Solar Storage Expansion

Off-Grid Cabin Living

Full specifications

At a glance

Dimensions: 26 × 18 × 8 in
Power: 102.4V
Surface: LFP

Full specifications11 data points across 4 categories

Dimensions

Dimensions (ea)	26 × 18 × 8 in
Weight (ea)	111.8 lb

Power & Performance

Capacity	6.144kWh per unit
Voltage	102.4V
Cycle Life	The battery maintains 80%+ SOH (state of health) after 3,500 cycles at 0.5C/0.5C at 25°C (77°F)
Discharging Temp	−4°F to 113°F
Charging Temp	−4°F to 113°F

Materials

Cell Material	LFP

Compliance & Warranty

IP Rating	IP54
Protection Type	Overvoltage protection, overload protection, overtemperature protection, short circuit protection, low temperature protection, low voltage protection, overcurrent protection
Storage Temp	−4°F to 113°F

The Off Grid Vault Promise

What you expect from us — no surprises.

Vetted QualityEvery product is rigorously evaluated for real-world performance before it earns a spot in our catalog.

Free ShippingShips free to your door — no minimums, no fine print.

30-Day ReturnsNot the right fit? Return it within 30 days, hassle-free.

★★★★★

“Outstanding quality and performance. The EcoFlow exceeded my expectations in every way.”

First L.United States

DELTA Pro Ultra Battery Pack

The EcoFlow DELTA Pro Ultra Battery is a high-capacity, modular energy storage solution designed to provide reliable backup power for your home. With a 6kWh base capacity, this advanced lithium iron phosphate (LiFePO4) battery is expandable up to 90kWh, ensuring uninterrupted energy for extended outages or off-grid living.

Designed for seamless integration with the EcoFlow DELTA Pro Ultra system, this battery supports scalable power needs, whether you’re running essential appliances or powering your entire home. Its long lifespan, fast charging capabilities, and intelligent energy management make it an ideal choice for homeowners seeking energy independence, solar storage, or emergency backup power.

Stay prepared for anything with the EcoFlow DELTA Pro Ultra Battery, a reliable and expandable energy storage solution built for long-term performance.

Included: EcoFlow DELTA Pro Ultra Battery, EcoFlow Battery Connection Cable (DELTA Pro Ultra) 0.2m, and Safety Guide.

EcoFlow DELTA Pro Ultra Battery Specs

Weight (ea): 111.8 lb
Dimensions (ea): 26 × 18 × 8 in
Capacity: 6.144kWh per unit
Voltage: 102.4V
Cell Material: LFP
Cycle Life: The battery maintains 80%+ SOH (state of health) after 3,500 cycles at 0.5C/0.5C at 25°C (77°F)
Protection type: Overvoltage protection, overload protection, overtemperature protection, short circuit protection, low temperature protection, low voltage protection, overcurrent protection
IP Rating: IP54
Discharging Temp: −4°F to 113°F
Charging Temp: −4°F to 113°F
Storage Temp: −4°F to 113°F

Your Satisfaction with EcoFlow is Guaranteed:

5-Year Limited Warranty
Lowest Price Guarantee

Additional information

Number of Batteries	1 x DELTA Pro Ultra Battery, 2 x DELTA Pro Ultra Batteries, 3 x DELTA Pro Ultra Batteries

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Frequently Asked Questions

Do grills ship assembled or in pieces?

All grills ship fully assembled in heavy-duty crating. Just remove the packaging, add propane or charcoal, and cook. No tools required.

What is your return policy?

We offer free 30-day returns on all grills. If you're not completely satisfied with your purchase, contact us and we'll arrange a free pickup.

Do you offer financing?

Yes — 0% interest financing is available on eligible purchases. Split into 4, 6, or 12 monthly payments with no hidden fees.

Are replacement parts available?

Yes. We carry a full catalog of OEM replacement parts including grates, burners, igniters, and heat shields for every brand we carry.

Can I use these grills year-round?

Absolutely. Our grills are built for all-weather use. The 304 stainless steel construction is designed to handle temperature extremes from -20°F winters to 110°F summers.

SKU: EFDeltaProUltra-BP-US Category: Expansion Batteries Brand: ecoflow

The Off Grid Vault Promise

What you expect from us — no surprises.

Vetted Quality Every product is rigorously evaluated for real-world performance before it earns a spot in our catalog.

Free Shipping Ships free to your door — no minimums, no fine print.

30-Day Returns Not the right fit? Return it within 30 days, hassle-free.

About ecoflow Expansion Batteries

ecoflow is a trusted manufacturer of premium expansion batteries. OffGridVault is an authorized dealer offering the full ecoflow lineup with free delivery, price match guarantee, and expert support.

View all ecoflow products →

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EcoFlow DELTA Pro Ultra Battery Pack

Scale Your Home Backup With Modular LFP Storage

Compatibility & Sizing

Built For Real Demand

Full specifications

At a glance

Dimensions

Power & Performance

Materials

Compliance & Warranty

The Off Grid Vault Promise

DELTA Pro Ultra Battery Pack

EcoFlow DELTA Pro Ultra Battery Specs

Your Satisfaction with EcoFlow is Guaranteed:

Additional information

Reviews

Frequently Asked Questions

The Off Grid Vault Promise

Related products

About ecoflow Expansion Batteries

Related Categories

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