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EcoFlow DELTA 2 Max Smart Extra Battery

$1,034.99 $1,190.99

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Eligible for returns: Yes

Time frame allotted: 30 days from the date of delivery

*Item(s) must be in new and unused condition to be eligible

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Expandable capacity

Increase the capacity of DELTA 2 Max with an extra 2046Wh.

Triple the power

2-6kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 2 Max Smart Extra Batteries to hit a capacity of 6144wh. Ideal for home backup, caravanning, outdoors or even everyday use.

Run 99% of Appliances with X-Boost.
Power pretty much anything with up to 3400W Output
DELTA Max powers almost all the devices you need with a large 2400W AC output. Plus, with X-Boost proprietary technology, run appliances with an output of up to 3400W. Compared with other power stations, DELTA 2 Max can power more devices, while still preventing overloading and overheating.

  • X-Boost Mode up to 3400W
  • Safe and Stable Battery Chemistry
  • Run Even More Heavy-Duty Appliances

Power through outages
Plug-and-play home back up power solution.

Power your essential appliances with a hefty 2400W AC output by connecting DELTA 2 Max (2kWh) and up to two Smart Extra Batteries (6kWh) with your home's transfer switch for partial home backup. With a plug-and-play design, it's easier than ever to prepare for blackouts.
  • 120V Home Backup Soluion
  • 2400W Huge AC output
  • 6kWh Connect up to 2 EcoFlow Smart Extra Batteries

Power for the entire family. 2048Wh Capacity
A generous 2048Wh capacity makes DELTA 2 Max ideal for home backup, running your essentials for hours. Using your transfer switch, or plugged in directly, keep your fridge on and stop food from spoiling for up to 14 hours. With its lightweight design, DELTA 2 Max is portable enough to grab and go on the next camping trip.

*Data based on a 120W referigerator.
Home Backup
RVing & Outdoors

DIY Projects

Filmmaking & Photography

Expandable up to 6kWh. Triple the Power

Take DELTA 2 Max with you anywhere as a solo unit or connect it with two
Extra Batteries for up to 6kWh of home backup.
  • 2048wh DELTA 2 Max
  • 4096Wh DELTA 2 Max + 1 × Extra Battery
  • 6144Wh DELTA 2 Max + 2 × Extra Battery

As Quiet as 30 dB
Peaceful charging.
At only 30 dB, DELTA 2 Max is quieter than other 2kWh power stations on the market.

*From a distance of approximately 20 in., noise level is 30 dB (with low input and 500W output)
vs. other power stations with 55 dB or higher.

Fuel Up 80% in Only 43 Mins*
Experience the world's fastest 43 minute recharge
With DELTA 2 Max's upgraded tech, combine up to 1000W solar input
with AC for world-leading charging speeds. In only 43 min get an 80%
charge. Or stick with AC for an 80% charge in a speedy 1.1 hour.

*When combined AC and solar input is 2400W using 1800W AC input and a minimum of 600W solar input. In only 43 min get an 80% charge

Maximize solar generation during the daylight hours.
99% MPPT Efficiency
EcoFlow's smart (MPPT) algorithm automatically detects voltage and current in real time to give you optimum solar generation throughout the day, even during cold and cloudy days.

Up to 1000W solar input
With a solar input of 1000W, connect up to 2 EcoFlow 400W
Portable Solar Panels or 4 sets of 220W Bifacial Solar Panels.

Durable, Safe, Lightweight

10-year long-lasting LFP battery
With its upgraded LFP battery chemistry, DELTA 2 Max has a lifespan of 3000 complete cycles until it reduces to 80% capacity. You'll get pretty much 10 years of power, even if you use it every day. That's 6× longer than other power stations with a similar capacity and output.

LFP Battery Chemistry
That's 6× longer than other power stations with a similar capacity and output.
Advanced BMS Protection
A built-in battery management system regulates vitals, including voltage,

current, and temperature, keeping DELTA 2 Max safe, secure, and built to
stand the test of time.
Protective Layers Inside and Out
With LFP cells, DELTA 2 Max is safe, durable, and highly efficient.
A rubber anti-slip base and a highly-rated UL94-5VA fire-resistant casing
offer multiple layers of protection.
Robust Design
Made with a sturdy one-piece design, DELTA 2 Max is designed for the rough and tumble of portability. Each port is reinforced, protecting them against wear and tear.
Industry's Lightest 2400W LFP Solar Generator
Even with its upgraded LFP battery, DELTA 2 Max is still 30% lighter than similar 2kWh LFP power stations on the market.
*Weight 23kg

Customized In-App Energy Management
Take control of your power.

Smart Automatic Control.
Save more on electricity billsCustomize the working time of DELTA 2 Max to avoid peak rates.Customized In-App Energy Management
AC Always-on. Experience peace of mind during power outages With our all-new AC Always On Mode, the AC power button stays on, even during a power outage or after the grid power is back, keeping your appliances powered no matter what.
Energy Management. Easily adjust power Easily adjust AC or Solar input to fit your needs: backup power reserve or energy savings.Prioritize solar energy input via the EcoFlow app when using X-Stream AC + solar dual charging.

Low Battery Reminder. Always power readyGet a notification via the app when the battery hits a low.

Save more on electricity bills
Customize the working time of DELTA 2 Max to avoid peak rates.

DELTA 2 Series
Expandable LFP Battery Power Solution

DELTA 2 offers capacities of 1-3kWh, while DELTA 2 Max provides energy storage from 2-6kWh. Get 10 years of daily use before hitting 80% of its original capacity. That’s down to its LiFePO4 battery chemistry, giving you 3000 full cycles for a 6× longer life.

Frequently Asked Questions

What battery does the product use?

It uses a high-quality LFP battery.

How do i know if the product is charging?

When it's charging, the remaining charging time will be shown on the LCD Screen. Meanwhile, the cahrging indicator icon begins to rotate with the remaining battery percentage and the input power shown on the right of the circle.

How do i clean the product?

Please gently wipe it with a dry, soft, clean cloth or paper towel.

How do i store the product?

Before storing, please turn off the product first, and then store it in a dry, ventilated place at room temperature. Do not place it near water resources . For long-term storage, please discharge and recharge the product every three months to extend its battery life,

Can i take teh product on a plane?



EcoFlow DELTA 2 Max Smart Extra Battery


EcoFlow DELTA 2 Max Smart Extra Battery

Output Port51.2V, 3200W Max
Dimension464 × 235 × 283 mm (18 × 9 × 11 in)
What’s in the boxExtra Battery Cable User Manual Warranty Card
Input Port51.2V, 2000W Max
BatteryLFP chemistry, 3000 cycles to >80% capacity
Weight19kg (42lbs)
Compatible withDELTA 2 / DELTA Max 2000/ DELTA 2 Max

What's Included

DELTA 2 Max Smart Extra Battery

1 x

AC Charging CAble

1 x

Car Charging Cable

1 x

DC5521 to DC5525 Cable

1 x

User's Manual & Warranty Card

1 x

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