The EcoFlow DELTA 3 Max Plus Extra Battery is a 2,048 Wh add-on pack, roughly 16 kg and 49.4 × 23.9 × 19.6 cm, designed to double the capacity of a DELTA 3 Max Plus Power Station to 4,096 Wh for extended runtime on critical loads. The pack uses the 4+8 extra-battery connector on the host station and inherits every charging path the host offers: wall socket, solar, alternator or Smart Generator. LiFePO4 cells rated for 3,000 cycles to 80% capacity give the battery a long life for daily use.

• 2,048 Wh LiFePO4 add-on capacity dedicated to the DELTA 3 Max Plus family
• Simultaneous charge and discharge with the host station, state-of-charge stays balanced
• Slim 49.4 × 23.9 × 19.6 cm footprint that sits neatly under or beside the host
• Compatible with all Max Plus charge paths, no separate charger or configuration required
• Full protection stack: over-voltage, over-load, over-heat, short-circuit and low-temperature safeguards
• Storage guidance: discharge to 30% for long-term storage and recharge to 60% every 3 months

Key specs

• Capacity: 2,048 Wh
• Cell chemistry: LiFePO4
• Cycles: 3,000 cycles to 80% capacity
• Extra battery port type: 4+8
• Weight: approx. 16 kg
• Dimensions: 49.4 × 23.9 × 19.6 cm
• Warranty: 5 years

This pack is aimed at DELTA 3 Max Plus owners who need to keep a fridge, heating controls or a workstation running for a full day of grid outage, or who want a longer off-grid stay in a professional field setup without swapping batteries or adjusting anything on the host station.