The EcoFlow DELTA Pro Ultra Battery is a 6,144 Wh LiFePO4 module purpose-built to stack under the DELTA Pro Ultra Inverter. Each unit weighs 50.7 kg and measures 66 x 45.5 x 20.4 cm, with a 102.4 V, 60 A output that connects directly into the inverter's battery port. Up to five of these batteries can be stacked, taking the system to 30 kWh of usable capacity.

• 6,144 Wh of LiFePO4 (LFP) storage per module for a long, high-cycle service life.
• 3,500 cycles to 80% capacity thanks to the LFP chemistry and the built-in BMS.
• Stackable up to 5 batteries under a single DELTA Pro Ultra Inverter for 30 kWh total.
• IP54 dust and splash protection when all ports are closed, plus a wide operating range from -10 °C to 45 °C.
• Compatible with the DELTA Pro Ultra's PV, grid, generator and EV charging inputs, so all recharge paths of the system remain available.
• 5-year warranty on the module for long-term investment protection.

Key specs

• Capacity: 6,144 Wh, 102.4 V, 60 A
• Cell chemistry: LiFePO4 (LFP)
• Life cycles: 3,500 cycles to 80% capacity
• Weight: 50.7 kg
• Dimensions: 66 x 45.5 x 20.4 cm
• IP rating: IP54 (with all ports closed)
• Discharge temperature: -10 °C to 45 °C
• Charge temperature: 0 °C to 45 °C
• Storage temperature: -20 °C to 45 °C
• Warranty: 5 years

Ideal as a second or third module for a household that has already installed the DELTA Pro Ultra Inverter and wants to extend backup to a full weekend or longer. In practice, the LFP chemistry stays stable across the -10 °C to 45 °C discharge window, and the 66 x 45.5 x 20.4 cm footprint slides neatly into a utility cupboard when the module is idle.