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Ecoflow DELTA 2 Extra Battery

Ecoflow

$349.00
$799.00 $349.00
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Product Details

The EcoFlow DELTA 2 Smart Extra Battery is the single most impactful upgrade for the DELTA 2 — connecting directly to the station's expansion port to push total capacity from 1024Wh to 2048Wh. That means double the refrigerator runtime (from approximately 10 hours to 20+), two nights of CPAP instead of one, or the ability to power job site tools for a full 8-hour shift without recharging.

It also supports the DELTA Max Smart Extra Battery as an alternative expansion, which scales the system even further to 2916Wh — making the DELTA 2 one of the most scalable compact stations available. All expansion batteries charge simultaneously with the main unit via any input source.

Brand new in box

Brand new in box

5 year factory warranty

5 year factory warranty

Fast shipping (5–7 business days)

Fast shipping (5–7 business days)

Authorized EcoFlow dealer

Authorized EcoFlow dealer
  • Expands DELTA 2 from 1024Wh to 2048Wh — doubles runtime across all connected loads
  • Doubles refrigerator runtime from ~10 hours to 20+ hours of continuous operation
  • LFP chemistry: 3,000+ cycles to 80%+ capacity, matched to the DELTA 2's battery standard
  • Charges simultaneously with the DELTA 2 via AC, solar, or DC input — no separate charging step
  • Also compatible with DELTA 2 + DELTA Max bundle for further capacity expansion
  • EcoFlow BMS manages cell balancing between station and extra battery automatically

The EcoFlow DELTA 2 Smart Extra Battery is the single most impactful upgrade for the DELTA 2 — connecting directly to the station's expansion port to push total capacity from 1024Wh to 2048Wh. That means double the refrigerator runtime (from approximately 10 hours to 20+), two nights of CPAP instead of one, or the ability to power job site tools for a full 8-hour shift without recharging.

It also supports the DELTA Max Smart Extra Battery as an alternative expansion, which scales the system even further to 2916Wh — making the DELTA 2 one of the most scalable compact stations available. All expansion batteries charge simultaneously with the main unit via any input source.

This item comes with a 5-Year Factory Warranty from EcoFlow. A 3-Year Standard Warranty is included automatically from the date of original purchase, covering defects in materials, workmanship, and performance under normal use. An additional 2-Year Extended Warranty is available at no extra charge — activate it by downloading the EcoFlow App, logging into your EcoFlow account, and registering your product using the unit serial number within the standard warranty period. This gives you up to 5 years of total factory warranty coverage. Exclusions apply for damage caused by misuse, unauthorized modification, disassembly, or exposure to excessive heat or liquids. For warranty claims: support@ecoflow.com or 1-800-368-8604.