EcoFlow |SKU: EFWAVE3-EB

EcoFlow WAVE 3 Add-on Battery 1024Wh Portable LFP Battery for Extended Cooling

Sale price $724.95 Regular price $899.00
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Product highlights

  • 1024Wh high-capacity battery
  • Long-lasting LFP (LiFePO4) chemistry
  • 4,000 cycles to 80 percent capacity
  • Detachable and swappable design
  • Lightweight and portable
  • Seamless integration with EcoFlow WAVE 3
  • Ideal for off-grid and backup use
  • Safe, stable, and efficient power output
  • Compact for easy storage
  • Tool-free connection and removal

In the box

  • EcoFlow WAVE 3 Add-on Battery – 1024Wh Portable LFP Battery for Extended Cooling
  • EcoFlow WAVE 3 Add-on Battery Cable
  • EcoFlow Car Charging Cable
  • Safety Instructions
  • Quick Start Guide
  • Warranty Card

Free standard shipping

*Orders placed before 1 PM EST Mon - Thur will ship the same day. Orders placed beyond these hours will be shipped the next business day. Exclusions apply. See shipping policy

Free Local Pickup

Please call for store stock availability. Requests made before 2:30 PM EST can be available for next-day pickup. Learn more

Questions? We’re Here to Help

Call or email one of our experts.

Enhance your portable cooling experience with the EcoFlow WAVE 3 Add-on Battery. Designed to seamlessly integrate with the WAVE 3 portable air conditioner, this add-on battery delivers a robust 1024Wh capacity—enough to extend cooling performance for hours without relying on external power sources. Built with long-lasting LFP (LiFePO4) battery chemistry, it offers up to 4,000 charge cycles to 80 percent capacity, ensuring years of dependable use. Its detachable design allows for easy installation and removal, while the compact and lightweight form factor makes it convenient to carry or store when not in use. Whether you're off-grid, on the move, or just need extra runtime, this battery brings flexibility and power wherever you need it.

Powerful Capacity

1024Wh capacity delivers extended runtime for your WAVE 3, allowing for hours of portable cooling without needing an outlet.

Long-Lasting LFP Battery

Utilizes LiFePO4 battery chemistry, offering up to 4,000 charge cycles to 80 percent capacity for reliable, long-term performance.

Detachable Design

Easily connects to or detaches from the WAVE 3 unit, making it convenient to transport, replace, or store.

Portable and Compact

Lightweight and space-saving, it’s built for life on the go—ideal for RVs, tents, small spaces, or travel setups.

Seamless Integration

Designed specifically for the EcoFlow WAVE 3, ensuring optimal performance and compatibility.

Shipping & Returns

  • Same Day Shipping


    All orders placed by 1PM( EST), Monday through Thursday, and by 11AM (EST) on Friday, are shipped same day. Orders placed outside these times will ship the next business day. We do not ship internationally or to Puerto Rico, Guam and other US territories at this time. For more details click here.

  • Free Standard Shipping


    We offer free standard shipping on thousands of items within the continental USA (this does not include Alaska and Hawaii).



  • Easy returns


    If you're not happy with your purchase for any reason, our flexible 30-day free return policy makes it easy to get a full refund. Click here to view our return policy.


Frequently Asked Questions

How do I return an item?

Returns are incredibly simple. Please log into your account, find your item you wish to return and follow the prompts to make a return. If you do not have an account, click here to find your order and make a return.

Will I receive a full refund when I return an item?

You will receive a full refund when you return an item in its original manufacturer’s packaging, undamaged and unmarked. If the item you are returning is priced at less than $35, you will be charged a 15% restocking fee. Please note you will not be refunded any shipping charges.

How many days do I have to make a return?

You have 30 days to make a return. During the holiday season, from November 1 to December 31, we extend the return window to 60 days. 

My item was damaged in transit. How do I place a return?

If your order has been noticeably damaged in transit, we strongly recommend that you refuse delivery and notify us immediately. Claims for missing items or items damaged in transit must be made within 48 hours of delivery. If there is carrier damage, please contact support@focuscamera.com with your order number and a description of the damage. 

There’s an issue with my order, what should I do?

Oh no! Please contact our customer service team so we can resolve the issue immediately. You can call us on 1.800.221.0828, email us at support@focuscamera.com, or send us a message here.

Can I exchange an item?

We do not currently offer exchanges. Please return the item you purchased within 30 days and order what you’d like instead.

If I ordered a kit, do I have to return all the items?

If you ordered a kit, you must return all components and accessories to receive a full refund.

I ordered a product that included a free item. I’d like to return it, do I need to return the free item as well?

If you ordered a product that included a free item, you must include the free item with your return. If not, your return will not be accepted and you will not receive a full refund.

Do you offer repairs?

We currently only offer camera repairs at our Brooklyn store. The item must be dropped off and collected in person as we do not accept shipped items for repair. For more information, please call our Brooklyn store on 1.718.431.7900.

What is your return policy?

Most items can be returned within 30 days for a full refund. Click here to read our full return policy.