EcoFlow DELTA 3 Smart Extra Battery
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Need more backup power without upgrading your whole system? The EcoFlow DELTA 3 Smart Extra Battery makes expanding your energy storage easy.
The EcoFlow DELTA 3 Smart Extra Battery gives you the extra capacity you need without changing your entire setup. By adding an extra 1024Wh, you can double the storage of your DELTA 3 or DELTA 3 Plus, making it ideal for home backup, RV trips, outdoor adventures, or day-to-day use. It’s a simple way to get more power when you need it most.
Even with its impressive capacity, the DELTA 3 Smart Extra Battery stays compact. It’s one-third smaller than the power station but provides the same strength and reliability. You can securely stack it on top of your power station to save space and keep your setup neat, whether you’re at home or on the road.
Key Features of the DELTA 3 Smart Extra Battery
- Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh.
- Get 10 years of daily use until it hits 80% of its original capacity. Embrace 3000+ charging cycles enabled by the LFP battery chemistry.
- Plug-and-play system. Use the EcoFlow app to monitor and control the DELTA 3 Smart Extra Battery.
- With one of the most comprehensive 5-year warranties available, we go the extra mile to give you peace of mind.
Effortless Setup, Instant Power

DELTA 3 Smart Extra Battery Specifications

10-Year Lifespan with an LFP Battery

Built with long-lasting LFP battery chemistry, this extra battery delivers more than 4000 full cycles before it reaches 80 percent capacity. That’s around 10 years of daily use, giving you a long-term, low-maintenance solution that lasts six times longer than many similar products.
Smart Control, Wherever You Are

Setup is effortless thanks to its plug-and-play design. Just connect it to your power station and you’re ready to go. You can monitor and manage the DELTA 3 Smart Extra Battery through the EcoFlow app or check the built-in screen for details like battery percentage, hours remaining, recharge time, and more.
Multiple Ways to Recharge

You also have multiple ways to recharge. Connect it through the power station’s Extra Battery port and use AC charging, portable solar panels, or the EcoFlow Smart Generator. However you choose to top up, you’ll have reliable energy stored for when you need it.
What’s in the box of DELTA 3 Smart Extra Battery?
