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Deal.ai › EF EcoFlow › Solar Generators
EF EcoFlow
EF EcoFlow DELTA 3 Max Black Portable Power Station

EF EcoFlow DELTA 3 Max Black Portable Power Station

4.4(61 ratings)

Best price now

$878.99at AmazonChecked 35 min ago

Compared across 14 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $878.99 at Amazon (checked Nov 12, 2026).
  • Checked at 14 stores.

Our take on the EF EcoFlow DELTA 3 Max Black Portable Power Station

The EcoFlow DELTA 3 Max is a 2,400W portable power station with a 170,660 mAh (about 1.7 kWh) battery, aimed at home backup, RV trips and job sites. Its X-Boost 3.0 mode lets it run resistive loads up to 3,400W, and EcoFlow claims a 0–80% recharge in 68 minutes across four charging methods. It sits below the DELTA Pro line in capacity and above the smaller DELTA 3, so it suits buyers who want serious output without the largest, heaviest units. Owners rate it well overall, though a few complain about weight and fan noise under heavy load.

Best forHome backup for fridges, routers and lightsRV and van life powerJob sites and outdoor eventsRunning high-wattage appliances via X-Boost
Pros
  • 2,400W AC output with 3,400W X-Boost headroom
  • Large ~1.7 kWh capacity for its class
  • Fast recharge: 0–80% in about 68 minutes
  • Pure sine wave output for sensitive electronics
  • Four charging methods, including solar
Cons
  • Heavy for one person to carry
  • Fan noise under sustained heavy load
  • X-Boost wattage is for resistive loads, not motors
  • Solar recharge is slower than wall charging

EF EcoFlow DELTA 3 Max Black Portable Power Station prices at every store

  • Home DepotNew

    In stock

    $879.00Free shippingChecked 35 min ago
    Visit Home Depot
  • HVACDirect.comNew

    In stock

    $899.00+ $39.00 shippingChecked 35 min ago
    Visit HVACDirect.com
  • Macy'sNew

    In stock

    $1,499.00Free shippingChecked 35 min ago
    Visit Macy's
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $878.99Free shippingChecked 35 min ago
    Visit Amazon
  • WalmartNew

    Availability unknownSold by EcoFlow Technology Inc.

    $879.00Checked 35 min ago
    Visit Walmart
  • ShopSolar.comNew

    Availability unknown

    $879.00Checked 35 min ago
    Visit ShopSolar.com
  • SolarTownNew

    Availability unknown

    $879.00Checked 35 min ago
    Visit SolarTown
  • Outbound PowerNew

    Availability unknown

    $879.00Checked 35 min ago
    Visit Outbound Power
  • Compass CamperNew

    Availability unknown

    $879.00Checked 35 min ago
    Visit Compass Camper
  • Off Grid StoresNew

    Availability unknown

    $879.00Checked 35 min ago
    Visit Off Grid Stores
  • Renewable OutdoorsNew

    Availability unknown

    $879.00Checked 35 min ago
    Visit Renewable Outdoors
  • AdoramaNew

    Availability unknown

    $899.00Checked 35 min ago
    Visit Adorama
  • eBayNew

    Availability unknownSold by lifestylebyfocus

    $919.95Checked 35 min ago
    Visit eBay
  • Satellite Phone StoreNew

    Availability unknown

    $1,054.80Checked 35 min ago
    Visit Satellite Phone Store

Also available at

  • WalmartCheck price at Walmart

Store links may earn us a commission.

EF EcoFlow DELTA 3 Max Black Portable Power Station price history

Lowest price we've seen: $878.99 on Nov 12 at Amazon. Tracked across 14 stores since Nov 12.

What reviewers say

  • 4.4 / 561 ratings

Owners rate the DELTA 3 Max around 4.4 out of 5. They praise its output, fast recharge and build, and some find it heavy and noisy under load.

What people mention
  • OutputPraisedOwners say it runs fridges, microwaves and power tools without trouble.
  • Recharge speedPraisedReviewers highlight the fast wall recharge to 80%.
  • WeightCriticisedSeveral owners say it is heavy and awkward to carry alone.
  • Fan noiseMixedThe fan is quiet at low draw but audible under sustained heavy load.
  • BuildPraisedOwners describe the unit as solid and well made.

About the EF EcoFlow DELTA 3 Max Black Portable Power Station

The EcoFlow DELTA 3 Max is a portable power station with a 2400W AC rated output. X-Boost 3.0 technology lets it support devices up to 3400W.

Its inverter uses a DSP chip to sample AC voltage and current every 33μs. This produces a pure sine wave output, which suits sensitive electronics.

It can be charged 4 ways. A charge from 0 to 80% takes 68 minutes.

Brand
EF EcoFlow
Color
Black
Battery capacity
170660 mAh
AC rated output
2400W
X-Boost output
Supports devices up to 3400W
Output waveform
Pure sine wave
Charging
4 ways to charge; 0-80% in 68 minutes

Specifications

battery_capacity
170660 mAhSource
color
BlackSource

Questions and answers

How long will it run a fridge?
At roughly 1.7 kWh, expect about a day of typical fridge cycling, less in hot weather or with frequent door openings.
Can it run a microwave or space heater?
Yes. X-Boost 3.0 covers resistive loads up to 3,400W, so most microwaves and small heaters work, though runtime is short at that draw.
How fast does it recharge?
EcoFlow claims 0–80% in 68 minutes on AC. Solar and car charging are slower.
Is it safe for laptops and TVs?
Yes. It outputs a pure sine wave, which suits sensitive electronics.
How does it compare with the DELTA Pro?
It has less capacity and output than the DELTA Pro but is smaller and easier to move. It is a step up from the standard DELTA 3.
Where is the EF EcoFlow DELTA 3 Max Black Portable Power Station cheapest?
At Amazon, for $878.99, as of our latest check.
What do buyers say about the EF EcoFlow DELTA 3 Max Black Portable Power Station?
Rated 4.4 out of 5 from 61 ratings.
Where can I buy the EF EcoFlow DELTA 3 Max Black Portable Power Station?
14 stores we checked sell it, including Walmart, Amazon, Home Depot, ShopSolar.com, SolarTown.

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Stores we've priced the EF EcoFlow DELTA 3 Max Black Portable Power Station at

  • Adorama deals and prices
  • Home Depot deals and prices
  • Macy's deals and prices
  • Walmart deals and prices

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