

Description
EcoFlow DELTA Pro Smart Extra Battery
Expandable & Long-Lasting Energy Storage - Boost Your Energy Storage for Home Backup, RVing, and Off-Grid Power
The EcoFlow DELTA Pro Smart Extra Battery is designed to expand the capacity of DELTA Pro, delivering an additional 3600Wh of backup power. With the ability to add up to two extra batteries, you can increase total capacity to 10.8kWh, making it ideal for home emergencies, RV living, outdoor adventures, and everyday power needs.
Dependable, Scalable, and Cost-Effective Energy Storage
The EcoFlow DELTA Pro Smart Extra Battery is the ultimate solution for scalable, long-lasting, and cost-efficient power storage, providing backup power for homes, RVs, and off-grid applications.
Triple the Power at Up to 30% Lower Cost
- 3-10kWh expandable capacity, tailored to fit your energy storage requirements.
- Up to 30% more affordable than purchasing a power station of the same capacity.
Expandable Capacity for Extended Power
- Increases DELTA Pro’s capacity by 3600Wh, with the option to add up to two extra batteries for a total of 10.8kWh.
- Perfect for home backup, long-term off-grid power, and energy independence.
Seamless Charging Anytime, Anywhere
- Compatible with all of DELTA Pro’s charging methods, including 6500W MultiCharge.
- Automatically charges and discharges in sync with DELTA Pro, keeping battery levels balanced.
10-Year Lifespan with Advanced LFP Battery Technology
- Upgraded LiFePO4 (LFP) battery chemistry provides over 3,000 complete cycles before reducing to 80% capacity.
- Lasts up to 6× longer than traditional lithium-ion batteries, offering a decade of daily use.
Easy to Use & Smart Monitoring
- No setup required – simply plug into DELTA Pro for instant extra energy storage.
- Monitor and control via the EcoFlow app, allowing real-time tracking of battery percentage, charge levels, and usage.
Emergency-Ready Power Storage
- Reliable backup power for blackouts, grid failures, and natural disasters.
- Expandable design ensures extended power availability when you need it most.

Specifications
Warranty
Warranty Policy – King of Generators
At King of Generators, we are committed to ensuring you have a seamless experience with your purchase. Below is an overview of the EcoFlow warranty policy to help you understand coverage and how to make a warranty claim through King of Generators support.
Warranty Period Overview
EcoFlow provides a limited warranty on its products, starting from the date of purchase. The warranty period varies by product type:
- DELTA Series & RIVER Series: 1–5 years (depending on model)
- Solar Panels: 12 months to 10 years
- Accessories: 12 months
- Smart Generators: 1–3 years
For detailed coverage, refer to the product-specific warranty on EcoFlow’s official website or contact King of Generators support.
What’s Covered?
- Free repairs or replacements for defects in materials or workmanship
- Warranty extensions available for select products upon registration on EcoFlow’s website
What’s Not Covered?
The warranty does not cover:
- Damage due to misuse, unauthorized modifications, or external factors (e.g., water, weather)
- Products purchased from unauthorized sellers or without valid proof of purchase
- Products used outside the intended region or incompatible with local power standards
Note: EcoFlow products are designed for use in the U.S. Warranty claims for malfunctions due to use outside the country may not be covered.
How to Make a Warranty Claim
If you experience any issues, please contact King of Generators support to initiate a warranty claim.
📞 Phone: (855) 799-2943
📧 Email: info@kinggenerators.com
Our team will assist you with the claim process, including verifying your purchase, troubleshooting the issue, and coordinating with EcoFlow for repair or replacement.
Once approved, we will provide further instructions, including shipping details and estimated resolution time.
For any questions regarding warranty coverage, feel free to contact King of Generators support. We're here to help!