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EcoFlow DELTA Pro 3 Smart Extra Battery

EcoFlow DELTA Pro 3 Smart Extra Battery | 4096Wh
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$2,399.00
$2,399.00 - $2,399.00
$2,399.00
$1,899.00
$1,899.00 - $1,899.00
$1,899.00
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EcoFlow DELTA Pro 3 Smart Extra Battery 4096Wh

EcoFlow DELTA Pro 3 Smart Extra Battery (4096Wh)

This doubles a DELTA Pro 3's stored energy: another 4096Wh of automotive-grade LFP capacity in a unit that plugs straight into the main power station. No tools, no electrician, no reconfiguration — connect the included cable and the system recognises the extra capacity.

One thing worth being clear about: an extra battery changes how long you can run, not how much you can run at once. Your output ceiling stays at the DELTA Pro 3's 4000W. If you need to run more appliances simultaneously, that's a second DELTA Pro 3 in parallel rather than a battery. A DELTA Pro 3 takes up to two of these, taking total capacity past 12kWh.

  • Doubles Your Runtime: Another 4096Wh per battery — two takes a DELTA Pro 3 system past 12kWh of total storage.
  • Genuinely Plug-and-Play: Connects to the main unit with the included cable. No tools, no electrician, no setup.
  • Automotive-Grade LFP Cells: The same cell technology as the main unit, with a 5-year warranty behind it.
  • Built to Move: Wide wheels, an ergonomic handle, and a compact footprint — not a fixture you have to site permanently.
  • 100A Output, 80A Input: High-current ports (40–58.4V) so the battery can deliver and absorb power at the rate the main unit expects.
  • LED Array Display: State of charge visible on the battery itself, as well as through the EcoFlow app.

Renewable Outdoors is an authorized EcoFlow dealer. Our Lowest Price Guarantee applies to every order — call us at (303) 876-7654 if you're unsure which part fits your setup and we'll check it for you.

Smart Extra Battery Specifications

Capacity 4096Wh
Cell Chemistry Automotive-grade LFP (LiFePO4)
Compatible With EcoFlow DELTA Pro 3 (up to 2 batteries per unit)
Output Port 40–58.4V, 100A max
Input Port 40–58.4V, 80A max
Charge Temperature 32°F to 113°F
Discharge Temperature 14°F to 113°F
Storage Temperature 14°F to 113°F
Display LED array
Dimensions 27.3" × 11.6" × 8.5" (694 × 295 × 215mm)
Weight ~72.8 lbs (33 kg)
In the Box Battery, EcoFlow extra battery cable, guides
SKU EFDELTAPRO3EB
Warranty 5-Year Warranty

This battery is specific to the DELTA Pro 3. It is not interchangeable with DELTA Pro, DELTA Pro Ultra, or DELTA 3 series extra batteries — each generation uses its own pack and cable. Note also that EcoFlow lists the DELTA 3 and DELTA 3 Ultra as able to accept DELTA Pro 3 extra batteries, so this unit has wider use than its name suggests. Call us at (303) 876-7654 with your power station model and we'll confirm the pairing before you order.

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