The EcoFlow DELTA Pro 3 Smart Extra Battery gives your power station an instant upgrade with 4096Wh of clean, scalable energy. Expand your system up to 12kWh, perfect for off-grid setups, emergency home backup, or longer outdoor adventures. Built with ultra-durable LiFePO4 battery cells, this stackable unit is your plug-and-play solution to uninterrupted power.
Pair your EcoFlow DELTA Pro 3 with up to two Smart Extra Batteries for triple the runtime. Perfect for critical appliances, extended blackouts, and mobile setups. Whether you're at home or off the grid, expandable power is at your fingertips.
Main Battery Capacity: 4096Wh
Expandable: Up to 12kWh total with two Smart Extra Batteries
Plug-and-play setup – no tools or apps required
Inside is a lithium iron phosphate (LFP) battery built to last for over 4000 cycles to 80% capacity. That’s years of daily use with minimal degradation—making this one of the most durable portable power expansions on the market.
Battery chemistry: LiFePO4 (LFP)
Cycle life: 4000+ cycles
Temperature resistance: Operates from -10°C to 45°C
Connecting is as simple as plug and power. This extra battery for the EcoFlow DELTA Pro 3 includes all necessary cables and instructions, so you can install it in minutes—no tools or tech skills required.
Includes 0.85m Flat Link Cable
Setup takes less than 2 minutes
Safe, secure connection for home or RV setups
Everything you need for seamless setup and reliable performance:
EcoFlow DELTA Pro 3 Smart Extra Battery
EcoFlow Extra Battery Flat Link Cable (0.85m)
Quick Start Guide
Safety Guide
Warranty Card
| Feature | Specification |
|---|---|
| Capacity | 4096Wh |
| Weight | 33kg |
| Dimensions | 694mm × 295mm × 215mm |
| Input Port | 40V–58.4V ⎓ 80A Max |
| Output Port | 40V–58.4V ⎓ 100A Max |
| Operating Temp (Discharge) | -10°C ~ 45°C |
| Charge Temp | 0°C ~ 45°C |
| Storage Temp | -10°C ~ 45°C |
| Display | LED Array |
| Compatibility | EcoFlow DELTA Pro 3 only |
We offer free UK delivery, read more in our shipping policy.
We offer 100-day returns, we'll even pay the postage. Read more about our refund policy.
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Call us on 02080642643
