More info
EcoFlow Power Station Accessory Extra Battery / Delta 2 Max
High-capacity expansion battery for extending Delta 2 Max power storage
The EcoFlow Delta 2 Max Extra Battery is a dedicated high-capacity expansion module designed to increase the total energy storage of the Delta 2 Max power station. Built with long-lasting LFP (LiFePO₄) battery technology, it provides stable, efficient, and reliable energy extension for home backup, mobile workstations, RV setups, and off-grid use.
Connected seamlessly to the main unit, the extra battery expands available runtime for essential devices, appliances, and tools, while maintaining fast charging speeds and full compatibility with solar, AC, and vehicle charging methods. Ideal for users who need extended power autonomy without sacrificing portability.
Technical info
Battery capacity: 1024 Wh
Battery chemistry: LFP (LiFePO₄), up to 3000 cycles to 80% capacity
Nominal voltage: 51.2 V
Rated output (via main unit): Follows Delta 2 Max AC output (2400 W with X-Boost up to 3400 W)
Charging methods: AC, solar, car, generator (through Delta 2 Max)
Connectivity: Dedicated expansion port for direct integration
Use cases: Home backup, off-grid setups, van life, camping, workshops, emergency power
Color: Black / Grey
Box contains
EcoFlow Delta 2 Max Extra Battery × 1
Battery connection cable × 1
User manual × 1
Local Stock 
Fast Shipment 1-2d. 
Safe Purchase 
2 years Warranty 
