The EcoFlow DELTA 3 Smart Extra Battery is the ultimate upgrade for your DELTA 3 or DELTA 3 Plus power station. If you love your current unit but find yourself needing just a little more juice for long weekends or extended blackouts, this is the solution.
By simply plugging this into your main unit, you instantly double your capacity, giving you more hours of fridge runtime, more laptop charges, and more peace of mind —without having to buy a whole new generator.
Key Features:
🔋 Double Your Capacity (1024Wh): Add an extra 1kWh of energy storage to your system. When connected to a DELTA 3 Plus (1024Wh), you get a massive 2048Wh total capacity, rivalling much larger and heavier units.
⚡ Fast Charging Integration: No need to charge it separately. When connected to your main unit, the Extra Battery charges simultaneously via AC (wall outlet) or Solar, utilizing EcoFlow’s industry-leading fast charging speeds.
🛡️ Built to Last 10 Years: Powered by premium LiFePO4 (LFP) battery cells, this unit is rated for 3,000+ cycles before hitting 80% health. It’s built to handle daily use for a decade.
🧱 Stackable & Space-Saving: Designed to sit perfectly on top or underneath your DELTA 3 unit. Its ergonomic design saves floor space in your caravan, garage, or car boot.
📱 Smart App Monitoring: Check battery levels, discharge rates, and charging status in real-time via the EcoFlow app.
🔌 Easy Plug-and-Play: No technical setup required. Just plug the included Extra Battery Cable into the port on your DELTA 3 series unit, and it works instantly.
What Can It Add?
Mini Fridge: +16-24 hours of runtime
CPAP Machine: +3-4 nights
Smartphones: +70+ recharges
LED Lights: +80+ hours
Expandable Capacity
Increase the capacity of DELTA 3 Plus/DELTA 3 with an extra 1024Wh. Double the capacity to meet your energy storage needs—ideal for home backup, RVing, outdoor adventures, and everyday use.
Compact Design
1/3 smaller than the power station, but with the same power. It can also be securely stacked on top of the power station to save space and reduce clutter.
10-Year Lifespan with an LFP Battery
The LFP battery chemistry enables 4000+ complete cycles until it reaches 80% capacity. That means about 10 years of daily use—6× longer than other power stations with similar capacity and output.
Easy to Use
A plug-and-play system with no setup required. Simply connect it to your power station for more energy storage. Use the EcoFlow app to monitor and control the DELTA 3 Smart Extra Battery with ease.
Control From Anywhere
Get all the details—battery percentage, remaining recharge time, hours left, and more—right on the built-in screen or from the EcoFlow app, wherever you are.
Convenient Recharging
Recharge the Extra Battery by connecting it to the power station's Extra Battery port. Use AC outlets, portable solar panels, or the Smart Generator for versatile charging options.
Specifications
Capacity: 1024Wh
Battery Chemistry: LiFePO4 (LFP)
Cycle Life: 4000 cycles to 80%+ capacity
Compatibility: EcoFlow DELTA 3 & DELTA 3 Plus
Dimensions: Compact & Stackable Design
Weight: Approx. 9.5kg (TBC)
Connectivity: Wired connection to main unit (Cable included)
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Shipping
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Manufacturing
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
