Runs my entire house with ease. A/C, Dryer, Furnace, lights, TVs, etc… combine it with the Smart Home Panel 2 and you won’t be in the dark, ever! - John I.

EcoFlow DELTA Pro Ultra Battery Pack

Name: EcoFlow DELTA Pro Ultra Battery Pack
Brand: EcoFlow
SKU: EFDeltaProUltra-BP-US-1
Price: 2099.0 USD
Availability: InStock

by EcoFlow

SKU: EFDeltaProUltra-BP-US-1

Save $1,200.00

$3,299.00

$2,099.00

Found a lower price?

Send us a request and we’ll beat it today — guaranteed!

1-888-976-5443 (Call/Text)

sales@outboundpower.com

Instant Live Chat

Select Number of Battery Packs

1 x Battery

2 x Batteries

3 x Batteries

4 x Batteries

5 x Batteries

Quantity

Authorized EcoFlow Dealer

Friendly Lifetime Support

Free 30-Day Returns

The EcoFlow DELTA Pro Ultra Battery Provides Scalable Power For Home Backup, RVs, Worksites, And Off-Grid Living

Designed for seamless integration with the DELTA Pro Ultra Portable Power Station, the EcoFlow DELTA Pro Ultra Battery expands your system with 6kWh of power capacity. With up to five batteries connected, you can scale your DELTA Pro Ultra power system to a massive 30kWh. It is the ultimate power solution for whole-home backup, off-grid living, and mobile applications.

The DELTA Pro Ultra Battery is built to scale alongside your energy needs. Whether you’re powering an RV, backing up your home, or preparing for anything unexpected, this smart lithium iron phosphate (LFP) battery delivers long-lasting, reliable storage.

With advanced battery management, fast recharging options, and a 10-year lifespan, the DELTA Pro Ultra Battery ensures dependable power you can count on for years to come.

Talk To A DELTA Pro Ultra Expert

Phone/Text: 1-888-976-5443
Email: sales@outboundpower.com

EcoFlow DELTA Pro Ultra Battery Highlights

One-Month Power Backup: 6kWh per battery is available for up to one-day backup, scalable to 90kWh for one-month coverage.
Space-Saving: Stack up the system in a neat, mess-free way.
One-Minute Setup: With a plug-and-play design.

EcoFlow DELTA Pro Ultra Battery Packs In Three Stacked Systems In A Garage Connected To A Smart Home Panel 2

EcoFlow DELTA Pro Ultra + Smart Home Panel 2: The World's First Smart Hybrid Whole Home Backup

With DELTA Pro Ultra and the EcoFlow Smart Home Panel 2, when the grid goes down, your power stays on. Your system can control every appliance to give you the best Power Independence plan during outages.

EcoFlow DELTA Pro Ultra Battery Warranty

The EcoFlow DELTA Pro Ultra Battery Pack includes a 5-year manufacturer warranty.

What's In The Box

1 x EcoFlow DELTA Pro Ultra Battery
1 x EcoFlow Battery Connection Cable
1 x Safety Guide

Bought some additional batteries. Super easy to install and increase the solar capacity.

Alan — thank you for the 5-star review. We’re glad to hear the additional batteries were easy to install and helped expand your solar capacity. We appreciate your continued business and are here if you need anything as you grow your system.

Best Price In Town

I do lots of research and Outbound Power had the best deal on what I needed. Surprise surprise. It shipped from the same warehouse as the manufacturer and the warranty works exactly the same. Glad to have found the site.

Hi RG,
Thank you for the kind words! We’re glad your research led you to us and that everything worked out as expected—from pricing to shipping to warranty coverage. We truly appreciate your support and hope you enjoy your new battery pack.

Best Customer Service!

Thank you for your great website and customer service. I ordered an item that didn’t meet my specific situation, so requested a return. OP responded promptly with their approval and a return shipping label. Ordered another item that met my needs and it was shipped within a week. Great job guys!

Hi Big El,

Really appreciate the awesome 5-star review! Glad we could jump on the return quickly and get you the exact setup you needed. That’s how we like to do things—fast, friendly, and zero hassle.

Thanks again for rolling with Outbound Power. If you need anything at all, we’ve got your back!

Great service. Good deal

Great customer service

Hi Ricky,

Thank you for the kind words! I’m glad to hear you felt taken care of and got a good deal. We truly appreciate you choosing Outbound Power, and we’re always here if you need anything else.

EcoFlow purchase

Purchased an EcoFlow inverter and two batteries to add to a 2 inverter/10 battery system. The new inverter is working as advertised and batteries are charging and discharging as they should with no issues. The Delta Pro Ultra system is the way to go if you want to go off grid, or just want reliable backup power during power outages.

Hi Dan,

Thank you so much for your review and for sharing details about your setup—that sounds like an impressive system! I’m glad to hear the inverter and batteries are working exactly as they should and integrating smoothly into your existing setup.

You’re absolutely right—the DELTA Pro Ultra system really shines for both off-grid living and peace-of-mind backup power. It’s exciting to see how you’re building yours out, and we’re grateful you chose Outbound Power to be a part of that journey.

If you ever need additional accessories, expansion options, or just want to talk through future upgrades, we’ll be here to help.

Wishing you reliable power and many worry-free days ahead.

EcoFlow Delta Pro Ultra battery

Good service, lowest price, tough to beat.

Hi John,

Thank you for your note and for choosing Outbound Power for your Delta Pro Ultra Battery Pack. I’m glad to hear you found both the service and pricing to be just what you were looking for—it means a lot to us to know we delivered on both.

We truly appreciate your business and look forward to helping with any future power needs you might have. If you ever have questions or want to explore additional options for your setup, don’t hesitate to reach out—I’m always happy to help.

Backup power

As expected. At a good price and fast delivery.

Hi Joe,

Thank you so much for your 5-star review! I’m glad to hear your EcoFlow DELTA Pro Ultra Battery Pack arrived quickly and at a great price. It’s wonderful to know everything met your expectations.

We truly appreciate your trust in Outbound Power and look forward to serving you again whenever you need us.

Outbound Power rules

I’ve purchased a variety of hardware from several different vendors and truly, Outbound Power is the best of them.

Hi Timothy,

Thank you for the incredible feedback! It means a lot to hear that Outbound Power stands out among your experiences with other vendors. We work hard to deliver the best service and value possible, and your kind words make it all worth it.

We truly appreciate your continued support — we’re always here when you're ready for your next upgrade!

Quick, efficient, best pricing.

I'm very pleased and this is a second purchase. Growing my system and would like to keep everything with one vendor. You guys rock!

Hi Norman,

Thank you so much for the kind words — we really appreciate your trust and loyalty!

It’s great to hear you’re expanding your system, and we’re honored to be your go-to vendor. We’ll keep working hard to earn that spot with every order.

If there’s ever anything else you need or have questions about, just reach out — we’re here to help.

You rock, too!

I’m a repeat customer :)

I added a third battery to my EcoFlow Delta Pro Ultra last week. I decided to order it from the same place where I made the original purchase. They offer good prices, prompt shipping and good communication. Everything went well!

Hi William,

Thank you so much for your kind message — and for coming back to us for your third EcoFlow Delta Pro Ultra battery! We’re thrilled to hear everything went smoothly and that our pricing, shipping, and communication met your expectations once again.

Your continued support truly means a lot to us. If you ever have questions about your setup or need help with anything down the road, we’re always here to help.

1 2 3

Rich Solar Anderson Adapter to Solar Connectors

My connectors arrived on time, were a perfect fit, and after running them through a couple trial runs have performed exceptionally well. Thank you!

Victor — thank you for the 5-star review and for sharing your experience. We’re glad to hear the connectors arrived on time, fit perfectly, and performed well during your testing. We appreciate your business and look forward to supporting you again in the future.

Works great

I purchased this cable to connect my Ecoflow DPU Ultra inverter with 5 batteries battery, to the 2nd port of my Ecoflow SHP-2, after purchasing a new inverter from Outbound power. (A new inverter, does not come with a dedicated SHP-2 cord) Works as intended with enough reach. Would buy again.

Thank you so much for taking the time to leave a review. We're so glad to hear that the cable is working great for you. Please let us know if there is ever anything else we can do to be of service!

Power bank we didn’t know we needed

We received the Trail as a free gift of the EcoFlow Black Friday promotion. We live in an off-grid cabin, and have a couple small 1 watt fans for moving air - the Trail has been perfect for this use. It has almost as much juice as our much heavier and bulkier Jackery 300. We love it.

Hi Kate,

Thank you so much for sharing this! We’re thrilled to hear the EcoFlow TRAIL 200DC has been such a great fit for your off-grid cabin. It’s awesome to know it’s delivering that kind of performance in such a compact package—and even holding its own against a larger unit.

We really appreciate you taking the time to leave a review, and we’re glad the Black Friday promo turned into something genuinely useful for you. If you ever need anything else or have questions down the road, we’re always here to help.

Thanks again for choosing Outbound Power!
Best regards,
Bill

Awesome

Hi Michael,

Thank you for the awesome feedback! We’re glad to hear you’re happy with the Solar Panels from Jackery. Stay blessed and Happy holidays in advance.

Thank you for the awesome feedback! We’re glad to hear you’re happy with the Jackery Battery Pack 1000 Plus. If you ever have questions or need anything down the road, we’re always here to help.

Repeat offender

Gotcha with the title, I have purchased several items from OBP, like a repeat offender. I’m glad I stumbled across their website, every product I purchased has arrived on time and in great condition. As long as I have a need for their products, I will always be a customer, or repeat offender.

Hi Homer,

This made our day — we love the “repeat offender” title. Thank you for coming back to Outbound Power and for trusting us with multiple purchases. We’re glad everything has arrived on time and in great condition, every time.

We truly appreciate your loyalty and support, and we’ll be here whenever you’re ready for the next “offense.”

Thanks again for being such a great customer.
Best regards,
Bill

Fast delivery...competitive pricing.

I've been looking all over for this cable connector. So, kudos for actually having it in stock. Delivery was fast and the connector works great.

Hi T.R.,

Thank you for taking the time to leave a review — we really appreciate it. We’re glad we had the connector you were looking for and that it arrived quickly and worked exactly as expected.

Thanks again for choosing Outbound Power. Please don’t hesitate to reach out if you need anything else in the future.

Very well designed

I haven’t installed as of now but will edit and repost once installed.

Hi Jeffrey,

Thank you for the 5-star review! We’re glad to hear your first impression of the EcoFlow Smart Home Panel 3 has been a positive one so far. We look forward to hearing how the installation goes once everything is up and running.

If you have any questions or need assistance during setup, our team is always here to help.

Thanks again for choosing Outbound Power,
Bill & the Outbound Power Team

This is my second Delta Pro Ultra! Bought to expand our home backup. Both units are connected to the Smart Home Panel 2

Thank you so much for the incredible 5-star review — and for being a returning customer! We’re honored that you chose a second DELTA Pro Ultra to expand your home backup system. Connecting both units to the Smart Home Panel 2 is an excellent setup for maximizing reliability and whole-home coverage.

We truly appreciate your trust and support. If you ever need assistance optimizing your configuration or adding accessories, our team is always here to help.