EcoFlow DELTA Pro 3 Portable Power Station (UL9540 Certificated)

Overview

This listing is the UL9540 certificated version of the EcoFlow DELTA Pro 3, as named by the product title. It provides 120V and 240V output with up to 4000W and expands from 4 to 48kWh for extended home backup.

Planning a system? Read our guide: How to size a battery backup system for your home.

Key benefits

• Powers a 3-ton central AC and other essential appliances.
• X-Boost provides up to 6000W when needed.
• 4000W continuous output even during pass-through charging.
• Charges to 80% in 50 minutes.

Key features

• 120V and 240V output, up to 4000W.
• 4-48kWh expandable capacity.
• EV-grade LFP battery retaining 80% capacity after 4000 cycles.
• Auto recharging with the EcoFlow Smart Generator 4000.
• Plug-and-play design with wide wheels and ergonomic handle.

Ideal use

Suited to whole-home backup planning, RVs and off-grid property where certified equipment is preferred.

Key specifications

Model / SKU

EFDELTAPRO3-US

Brand

EcoFlow

Category

Portable power

Voltage

120V

Energy capacity

48 kWh

Rated power

4,000 W

From the manufacturer

Expandable Capacity: 4–48 kWh, from 1 day to week of home power during outages. Powerful and Versatile: Delivers both 120V and 240V outputs with up to 4000W in a single unit, capable of powering a 3-ton central AC and all other essential appliances. Exclusive X-Boost technology allows the unit to exceed its rated output, providing up to 6000W of power when needed. Continuous Output While Charging: Provides stable, uninterrupted power at 120/240V with a maximum continuous output of 4000W, even during pass-through charging. Endless energy: Compatible with portable generators, auto recharging when connecting with EcoFlow Smart Generator 4000. Longer Life Cycle: Retains 80% capacity even after 4000 cycles, thanks to advanced EV-grade LFP battery technology. Energize All Scenarios: Wide wheels, ergonomic handle & compact design — seamless portability for homes, RVs, and off-grid energy. Easy to Use: Plug-and-play design for hassle-free setup. Forget Refueling: Fast solar/car/outlet charging, charges to 80% in just 50 minutes, refueling with no worries. *Note: Smart Home Panel 2 requires installation before use, and the specific fee will depend on the assessment, and 'EcoFlow DELTA Pro 3 + Smart Home Panel 2 + Installation' includes installation services.

Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.

Before you order

We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.

Ask our team to confirm UL9540 documentation for this DELTA Pro 3 listing. Message our team on WhatsApp.