The EcoFlow DELTA Pro Additional Battery (1ECO3603, EU) expands the capacity of the DELTA Pro power station up to 10.8 kWh, providing long-lasting, scalable energy storage with smart monitoring and a 5-year warranty.
The EcoFlow DELTA Pro Additional Battery (1ECO3603, EU) expands the capacity of the DELTA Pro power station up to 10.8 kWh, providing long-lasting, scalable energy storage with smart monitoring and a 5-year warranty.
The EcoFlow DELTA Pro Additional Battery is designed to significantly expand the energy capacity of your EcoFlow DELTA Pro power station. By connecting one additional battery, the total capacity increases from 3.6 kWh to 7.2 kWh, while connecting two units boosts capacity up to an impressive 10.8 kWh. Once connected, the system ensures simultaneous and balanced charging and discharging across the station and all additional batteries, maximizing efficiency and battery lifespan.
This additional battery fully supports EcoFlow’s MultiCharge technology, allowing flexible charging from solar panels, AC outlets, or EV charging stations anytime and anywhere. Equipped with a clear front-facing LCD display, it provides real-time information on battery status, input/output power, remaining capacity, and time to full charge. For added convenience, monitoring and control are also available via the EcoFlow mobile application. Built using durable LFP battery technology and backed by a 5-year warranty, the DELTA Pro Additional Battery is ideal not only for emergency home backup but also for workshops, outdoor work, and events where reliable power is essential.
Note: This model is functionally equivalent to item 1ECO3602.
Key Features
Expands EcoFlow DELTA Pro capacity up to 10.8 kWh
Supports connection of up to two additional battery units
Balanced, simultaneous charging and discharging
Compatible with EcoFlow MultiCharge (solar, AC, EV charging)
Integrated LCD display for real-time status monitoring
Remote monitoring and control via EcoFlow mobile app
Long-life LFP battery technology
5-year manufacturer warranty
1 × EcoFlow DELTA Pro Additional Battery
1 × Connecting cable
1 × Handle cover
1 × User manual
Battery Specifications
Model: EcoFlow 1ECO3603 (EU)
Battery capacity: 3600 Wh
Cell type: LFP (LiFePO₄)
Lifespan:
6500 cycles to 50% capacity
3500 cycles to 80% capacity
Charge retention: Up to 1 year after full charge
Physical Specifications
Dimensions: 63.5 × 28.5 × 41.6 cm
Weight: 38 kg