Ecoflow DELTA 3 Max Portable Power Station - Gray

Name: Ecoflow DELTA 3 Max Portable Power Station - Gray
Brand: EcoFlow
SKU: EFD3M-G-US
Price: 899.0 USD
Availability: InStock

BY: EcoFlow

SKU: EFD3M-G-US

| Availability: In stock

$1,499.00

$899.00

You Save: $600.00

Product Highlights

2,048Wh of stored energy for portable and backup power
2,400W rated AC output for compatible appliances
Recharge from AC or compatible solar panels
EcoFlow app helps you monitor and manage power remotely

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Ecoflow DELTA 3 Max

The EcoFlow DELTA 3 Max is a next-generation backup power and outdoor power solution that delivers massive power in a compact design, giving owners a dependable power source for the home and beyond. With a 2400W rated output (3400W X-Boost), expandable capacity from 2–10kWh, and ultra-fast charging, it's built to keep your home and essential appliances running during outages or off-grid adventures.

EcoFlow DELTA 3 Max Features

2400W Output, 3400W X-Boost – Runs high-powered appliances like fridges, ovens, and workshop tools with stable, pure sine wave inverter power.

Expandable Capacity (2–10kWh) – Add extra batteries for longer runtime and additional energy storage during outages or extended trips.

Ultra-Fast Charging Options – Recharge from 0–80% in just 1.7 hours via AC, or pair solar panels with generator charging for even faster results in the field. For extended trips or off-grid stays, the EcoFlow Smart Generator (sold separately) offers reliable recharging during multi-day outages, and EcoFlow lists it as compatible with the DELTA series.

Smart App Control with EcoFlow OASIS – Monitor usage, set charging schedules, and manage circuits with advanced AI insights. Stay connected through built-in Wi-Fi and Bluetooth for dependable connectivity wherever you're working or camping.

Industrial-Grade UPS (<10ms) – Keeps sensitive electronics, security systems, and other connected loads running instantly when grid power fails, reducing safety hazards from unstable power during outages.

Built to Last – LFP battery with up to 10 years lifespan, built for drop resistance and weather tolerance in any environment, from job sites to backcountry camps.

EcoFlow DELTA 3 Max Applications

Home backup – Seamless backup power supply during blackouts, keeping the essentials running until the grid comes back.
Outdoor adventures – Keep lights, cooking gear, and tools running on a camping trip or anywhere off the grid.
Workshops and job sites – Reliable power for heavy-duty tools and sustained loads on the job site.
Emergency preparedness – Keep medical equipment, security systems, and other critical essentials running.
Mobile businesses – Ideal for food trucks, mobile studios, and event setups with intermittent loads that spike on and off throughout the day.

Whether you're supporting off-grid living full-time or just prepping for the next storm, the DELTA 3 Max adapts to how you use it.

What's Included

Everything you need is included right out of the box:

1 x EcoFlow DELTA 3 Max Portable Power Station
1 x AC Charging Cable
1 x Manual
1 x Warranty Card

Warranty

5-Year Warranty

*Includes 3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration.

EcoFlow DELTA 3 Max Specifications

This unit supports expansion up to 10kWh, so your system can grow with your needs. It's built to perform without issues across a wide range of conditions, as shown in the specs below.

Specification	Details
Net Weight	20.3+0.4kg
Dimensions (HWD)	494mm×239mm×305mm
Rated Capacity	2048Wh 51.2V 40Ah
Cell Chemistry	LFP (LiFePO4)
AC Output	120V 60Hz 2400W total, 20A (x4) Max per port
X-Boost	3400W
USB-A Output	USB-A (x1): 5V-3A/9V-2A/12V-1.5A, 18W Max
USB-C Output	USB-C (x1): 5/9/12/15V-3A,20V--5A, 100W Max \| USB-C (x2): 5/9V-3A, 15V-2A,30W Max per port, total 30W
Cigarette Lighter Output Port	12.6V, 10A, 126W Max
AC Input (Charge Only)	100-120V~15A 50/60Hz
Maximum PV Input Power(W)	500W
Charge Temperature	0°C-45°C (32°F-113°F)
Discharge Temperature	-10 to 45°C (14°F-113°F)
Operating Humidity	20%-95%
Warranty	5-Year Warranty \| *Includes 3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration.
Communication Method	Wifi 2.4GHz/ Bluetooth5.0
EMC	Class B
UPS	<10ms

Frequently-Asked Questions

How long does it take to charge the DELTA 3 Max?

Using AC charging, it reaches 80% in about 1.7 hours. Solar charging is slower and depends on conditions, with the unit accepting up to 500W of PV input.

Can it power my entire home during an outage?

Yes, when paired with additional batteries (up to 10kWh), it can keep major home appliances running for days during extended outages.

Is it safe for sensitive electronics?

Absolutely. DELTA 3 Max provides pure sine wave inverter output and has an ultra-fast <10ms UPS function to keep computers, security systems, and medical devices safe from damage.

Can I control and monitor the unit remotely?

Yes, after a quick Wi-Fi setup in the EcoFlow app, you get remote access to check battery status, schedule charges/discharges, and adjust power settings from anywhere.

What makes its battery last 10 years?

The LiFePO4 chemistry combined with AI-driven BMS and 40+ protective layers ensures long cycle life and enhanced durability.

It's easy to see why customers love how durable and dependable the DELTA 3 Max is: a smart way to keep the power on when you need it most.

Manual

Ecoflow DELTA 3 Max Manual

Shipping & Easy Returns

Shipping is free across the Lower 48. No fuel surcharges, no residential fees, and no liftgate charge on freight orders. The price you see is the price you pay. Read our full Shipping Policy here.

Most orders leave the warehouse in 1 to 2 business days and arrive within 3 to 10 business days. We send tracking the moment it ships.

Anything that ships on a pallet goes freight with liftgate and pallet jack included, so the driver gets it off the truck and onto the ground at your address. The carrier will call you directly to schedule a delivery window.

Returns are 30 days from delivery. For freight deliveries, inspect the shipment before you sign for it. If something is damaged in transit, note it on the delivery receipt and we handle the freight claim, not you. Read more about our Returns Policy here.

Why Buy From Us

Buying solar online should not mean guessing your way through the install. Here’s what you get with Off-Grid Source.

We size the system, not just sell it. Call before you order and a sales engineer will check the kit against your actual loads, tell you if you’re buying too much or too little, and list the site-specific parts your install will need.
A+ rated by the Better Business Bureau. Another trust signal that you’re buying from a real company that stands behind the sale.
Free shipping across the Lower 48. No hidden freight charges, residential fees, or liftgate surprises at checkout.
Guaranteed best prices. Find the same product for less elsewhere and we’ll match it.
30-day easy returns. If it is not the right fit, we’ll help you get it sent back.
A real person on the phone. Product questions, sizing, install planning, warranty help: call us at +1 (877) 556-3347.

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I was a DIY solar power wannabe... that is 'til I connected with Manny... The man's a prince! He not only knows his stuff; he walked me through all things electrical. To make sure I had all I needed... he gave me his cell phone # to text him anytime I got confused... nights and weekends included. The prices were very competitive... definitely go with Manny -- you won't go wrong!

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I would personally like to thank Manny... I purchased the inverter and decided I needed to return it... Manny was very understanding and went out of his way to help me return the product and not even have to pay for shipping return. He gives this company reputation, honor and quality customer service!

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I have been talking with Manny the owner... He has not only helped me design a system but he's been assisting with the install and components. I am super pleased so far with the assistance.

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