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Ecoflow DELTA Pro Ultra X Battery

Ecoflow

$2,099.00
$2,799.00 $2,099.00
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Product Details

The EcoFlow DELTA Pro Ultra X Battery adds 6144Wh of LiFePO4 storage per unit to the DELTA Pro Ultra X Whole-Home Backup system. Each battery module connects directly to the Ultra X Inverter, expanding total system capacity for longer backup duration during extended outages.

Available in quantities from 1 to 5 batteries, the modular design lets you scale the system to match your household energy requirements — from essential circuit backup with a single battery to multi-day whole-home independence with five. LFP chemistry delivers 6,500+ cycles to 80% capacity for over a decade of daily use.

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
  • 6144Wh per battery module — scale from 6.1kWh to 30.7kWh with up to 5 batteries
  • LiFePO4 chemistry: 6,500+ cycles to 80% capacity for 10+ years of daily cycling
  • Direct connection to DELTA Pro Ultra X Inverter — no additional hardware or wiring
  • Available in 1–5 battery configurations for flexible system sizing
  • Self-heating for cold-weather operation down to -4°F (-20°C)
  • IP54-rated enclosure for indoor and protected outdoor installation
  • Integrated BMS with full protection: overcharge, over-discharge, temperature, short circuit

EcoFlow DELTA Pro Ultra X Smart Extra Battery

Product Description

The EcoFlow DELTA Pro Ultra X Smart Extra Battery expands the storage capacity of your DELTA Pro Ultra X system, adding an additional 6,144 Wh per unit. Featuring EV-grade LiFePO₄ battery chemistry, dual BMS protection, and a three-level safety system, it provides enhanced durability, stability, and long-term performance.

With its plug-and-play design, the Smart Extra Battery easily connects to your existing DELTA Pro Ultra X setup, no complex installation or wiring required. Built for scalability, it’s the ideal solution for extending backup runtime, increasing off-grid autonomy, or preparing for higher future energy demands.

Key Specifications

  • Expandable Capacity: Adds 6,144 Wh per battery module

  • Battery Chemistry: LiFePO₄ (Lithium Iron Phosphate) for long cycle life and superior safety

  • Protection System: Dual BMS (Battery Management System) with 3-level safety architecture

  • Compatibility: Designed exclusively for the DELTA Pro Ultra X system

  • Connection Type: Plug-and-play expansion, no tools required

  • Durability: Built with automotive-grade components for extended service life

  • Warranty: 5 years (manufacturer standard)

Product Benefits & Use Cases

  • Expandable Energy Storage: Add more battery capacity to your DELTA Pro Ultra X setup for longer backup or off-grid operation.

  • Long-Lasting Performance: Advanced LiFePO₄ chemistry ensures stable power output and thousands of charge cycles.

  • Smart, Safe, Reliable: Dual BMS and multi-layer safety systems protect against overcharge, overheating, and short circuits.

  • Effortless Integration: Plug-and-play connection makes expansion fast and simple, no professional installation required.

  • Scalable Design: Add multiple Smart Extra Batteries as your energy needs grow, building a robust whole-home backup system.

What's in the box?

  • Delta Pro Ultra X extra Battery (1)
  • Battery Connection Cable (1)
  • User Manual & Warranty Card

Specs

Battery Chemistry

LFP

Warranty

5 years

Battery Temperature

Operating & Storage temp: −4°F to 113°F (−20°C to 45°C)

Inverter Temperature

Operating & Storage temp: −4°F to 122°F (−20°C to 50°C)

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.