EcoFlow Delta 2 MAX Smart Extra Battery

More info

Expand your DELTA 2 Max’s power up to 6kWh.

Take your energy storage to the next level with the EcoFlow DELTA 2 Max Smart Extra Battery — a powerful and reliable expansion module designed to extend your backup time, double or triple your energy, and keep your home or adventures powered longer.

Double or Triple Your Capacity

Expand your DELTA 2 Max from 2048Wh up to 4096Wh with one extra battery, or up to 6144Wh with two. Perfect for home backup or long off-grid trips.

Long-Lasting LFP Battery Chemistry

Built with the same LiFePO₄ (LFP) battery cells as the main DELTA 2 Max — over 3,000 full cycles to 80% capacity for up to 10 years of daily use.

Plug-and-Play Connection

Simply connect the Smart Extra Battery to your DELTA 2 Max — it automatically syncs and charges/discharges in harmony with the main unit. No setup required.

Smart Battery Management System (BMS)

Real-time monitoring of voltage, current, and temperature ensures safety, optimal performance, and longer battery lifespan.

Dual Charging Compatibility

Charges together with your DELTA 2 Max through AC, solar, or car charging — no separate cables or power sources needed.

Clear LCD Display & App Monitoring

View battery percentage, remaining time, input/output power, and more — directly on the built-in screen or via the EcoFlow App.

Safe, Durable & Portable Design

Reinforced casing, non-slip rubber base, and ergonomic handles make it easy to move and reliable for both indoor and outdoor use.

Technical info

Box contains

• DELTA 2 Max External Battery
• AC charging cable
• User manual & warranty card