EcoFlow DELTA 3 Ultra Plus Portable Power Station+ DELTA 3 Max Plus Smart Extra Battery

Product Description

Pair the DELTA 3 Ultra Plus portable power station with the DELTA 3 Max Plus Smart Extra Battery for a powerful, scalable energy system. The DELTA 3 Ultra Plus delivers 3,072 Wh of energy storage and a 3,600 W rated inverter (7,200 W surge), giving you the ability to run heavy-duty appliances like refrigerators, power tools, or even an RV panel. Its Smart Output Priority feature lets you choose which circuits matter most when power is limited.

Adding the DELTA 3 Max Plus Smart Extra Battery expands total storage capacity and extends runtime, giving you the freedom to power essentials longer during outages, off-grid trips, or demanding projects. The extra battery connects seamlessly via the dedicated port and integrates fully for charging, management, and monitoring.

Together, this bundle offers high output, long-lasting performance, and the flexibility to grow with your energy needs, whether at home, on the road, or off the grid.

Key Specifications

DELTA 3 Ultra Plus (3,072 Wh)

• Capacity: 3,072 Wh (3.072 kWh)

• Rated AC Output: 3,600 W

• Surge Output: 7,200 W

• Supports devices up to approximately 4,600 W with X-Boost 3.0 technology

• Expandable capacity: from about 3 kWh up to 11 kWh

• 10 ms automatic switchover (UPS) for sensitive electronics

• Built with automotive-grade full-tab LFP battery cells rated for over 10 years of use

• Ultra-versatile charging with up to six methods, including wall, generator, and solar input

• Charges from 0–80% in as little as 48 minutes under optimal conditions

• Enhanced durability for harsh environments including humidity, salt spray, and drop resistance

• Smart Output Priority feature allows pre-setting essential loads (e.g., fridge, router) to stay powered

DELTA 3 Max Plus Smart Extra Battery

• Expands total storage capacity for longer runtime when paired with the DELTA 3 series

• Plug-and-play connection to the main unit’s extra battery port

• LiFePO₄ (LFP) battery chemistry for long life and dependable performance

• Integrated monitoring and management through the EcoFlow app and main unit display

• Compact, stackable design for easy setup in home, RV, or mobile use

• Rugged build quality designed for long-term reliability

What’s in the Box

DELTA 3 Ultra Plus

• DELTA 3 Ultra Plus Portable Power Station

• AC Charging Cable

• User Manual and Warranty Card
  

DELTA 3 Max Plus Smart Extra Battery

• DELTA 3 Max Plus Smart Extra Battery

• Extra Battery Connection Cable

• User Manual and Warranty Card
  

Bundle Benefits & Use Cases

• Extend runtime for home backup, RV travel, or off grid living by adding extra energy storage

• Run multiple high-wattage appliances at once, from kitchen devices to tools and electronics

• Keep essential circuits powered through Smart Output Priority settings on the main unit

• Scale your energy system as your needs grow without replacing the core power station

• Seamless integration between the main unit and extra battery for efficient, space-saving setup