EcoFlow DELTA 3 Series Smart Extra Battery | 1,024Wh Expansion Module

More Runtime. Same Great Station.

The EcoFlow DELTA 3 Series Smart Extra Battery is the easiest way to double the capacity of your DELTA 3 or DELTA 3 Plus. With a plug-and-play 1,024Wh LiFePO₄ module, it snaps on in seconds — no tools, no fuss — and instantly extends your runtime for camping, home backup, or off-grid living. Built to last up to 10 years with 3,000+ charge cycles, it's a long-term investment in your energy independence.

Why You'll Love It

• 1,024Wh LiFePO₄ Capacity — Effectively doubles your DELTA 3 or DELTA 3 Plus runtime
• Plug-and-Play Installation — Connects in seconds with no tools or cables required
• Compact & Stackable — About one-third the size of the main station, stacks neatly for a tidy setup
• 3,000+ Charge Cycles — Retains 80%+ capacity for up to 10 years of daily use
• EcoFlow App Integration — Monitor battery health and charge status from your phone
• 5-Year Warranty — EcoFlow's best-in-class coverage

Compatible With

• EcoFlow DELTA 3
• EcoFlow DELTA 3 Plus

You're two days into a camping trip and your DELTA 3 Plus is running low. With the Smart Extra Battery already stacked on, you've got another full day of power in reserve — enough to keep the fridge cold, the devices charged, and the good times rolling. That's what an extra 1,024Wh feels like in the real world.

Specifications

• Capacity: 1,024Wh
• Battery Type: LiFePO₄
• Cycle Life: 3,000+ cycles to 80% capacity
• Lifespan: ~10 years of daily use
• Connection: Plug-and-play
• Warranty: 5 years