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EcoFlow Delta Pro 3 vs EcoFlow DELTA 3800 Gen4

The Delta Pro 3 is the stronger unit: 4,096Wh of LFP, 4,000W continuous with 8,000W surge, 240V output, and expansion to 24kWh. The Delta 3800 Gen4 is lighter at 67.5 lbs and simpler to move, but it tops out at 3,600W, 120V only, and 12kWh of expansion. Buy the Pro 3 for whole-home backup or 240V appliances; buy the 3800 Gen4 if you want a lighter 120V unit and don't need 240V. Owners rate the Pro 3 well (4.7/5), and both use LFP chemistry with long cycle life.

  • Choose the Delta Pro 3 if you need 240V output, 4,000W continuous power, or room to expand past 12kWh for home backup.
  • Choose the Delta 3800 Gen4 if you want a lighter, simpler 120V power station and don't need 240V or more than 12kWh.

Prices

  • EcoFlow Delta Pro 3: $939.00 at kaboole (last seen Nov 2)
  • EcoFlow DELTA 3800 Gen4: $1,699.00 at Amazon (last seen Nov 9)
  • Difference: the EcoFlow Delta Pro 3 is $760.00 cheaper than the EcoFlow DELTA 3800 Gen4 at the latest prices (Nov 2 and Nov 9)
EcoFlow
EcoFlow Delta Pro 3

EcoFlow Delta Pro 3

4.7(151 ratings)
$939.00at kabooleChecked Nov 2
See all prices and details
Visit kaboole
Pros
  • 4,096Wh LFP with 4,000 cycles to 80%
  • 4,000W continuous and 8,000W surge
  • 240V output runs well pumps and dryers
  • Expands to 24kWh with extra batteries
  • 2,600W solar input across two MPPT ports
Cons
  • About 114 lbs, hard for one person to move
  • Premium tier against the 3800 Gen4
  • Large footprint for a portable unit
EcoFlow
EcoFlow DELTA 3800 Gen4

EcoFlow DELTA 3800 Gen4

$1,699.00at AmazonChecked Nov 9
See all prices and details
Visit Amazon

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

Pros
  • 67.5 lbs, far easier to carry and store
  • Automotive-grade LFP chemistry
  • Under 10ms UPS transfer for sensitive gear
  • Low idle draw: 14W AC, 3W standby
Cons
  • 3,600W continuous is below the Pro 3
  • 120V only, no 240V appliances
  • Expansion capped at 12kWh
  • 2,000W solar input is lower

What separates them

EcoFlow Delta Pro 3EcoFlow DELTA 3800 Gen4
Battery capacity4,096Wh LFP3,763Wh automotive-grade LFP
Continuous AC output4,000W (8,000W surge, 6,000W X-Boost)3,600W (7,200W surge, 4,600W X-Boost)
Output voltage120V and 240V, two-phase120V only, pure sine wave
ExpansionUp to 24kWh with extra batteriesUp to 12kWh with extra batteries
WeightAbout 114 lbs67.5 lbs
Max solar input2,600W across two MPPT ports2,000W
UPS transfer10msUnder 10ms
Idle drawNot published14W AC no-load, 3W standby

Price history

$2,999.00$845.10
Oct 30Nov 11
  • EcoFlow Delta Pro 3: lowest $845.10 on Nov 2 at kaboole; $2,898.00 on Nov 11.
  • EcoFlow DELTA 3800 Gen4: lowest $1,699.00 on Nov 9 at Amazon; $2,999.00 on Nov 11.

Prices at every store

EcoFlow Delta Pro 3

  • Made-in-China.comNew

    In stockShips from abroad · duties may apply

    $1,600.00Checked Nov 9
    Visit Made-in-China.com
  • kabooleNew

    Availability unknown

    $939.00Checked Nov 2
    Visit kaboole
  • journeybikes.comNew

    Availability unknown

    $1,362.30Checked Nov 2
    Visit journeybikes.com
  • Made-in-China.comNew

    Availability unknownShips from abroad · duties may apply

    $1,600.00Free shippingChecked Nov 9
    Visit Made-in-China.com

Also available at

  • EcoFlowCheck price at EcoFlow
  • eBayCheck price at eBay

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All 21 stores and price history →

EcoFlow DELTA 3800 Gen4

  • EcoFlow OfficialNew

    In stock

    $2,999.00Free shippingChecked 14 h ago
    Visit EcoFlow Official
  • AmazonNew

    Availability unknown

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

    $1,699.00Free shippingChecked Nov 9
    Visit Amazon
  • eBayNew

    Availability unknownSold by jeepinbluesman (99.3% positive, 205 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $1,899.00Free shippingChecked 14 h ago
    Visit eBay

Store links may earn us a commission.

All 3 stores and price history →

Specs compared

SpecEcoFlow Delta Pro 3EcoFlow DELTA 3800 Gen4
Weight114.6 lbs67.5 lbs
Capacity4,096 Wh—
Output4,000 W—
UPS10ms—
ExpandableUp to 24 kWh—
Power SourceSolar—
Power Output8 kilowatts—
Battery4,096 Wh LFP (LiFePO₄), long cycle life—
Solar inputUp to 2,600 W via dual MPPT—
Width (")16.1—
PhasesTwo-Phase—
Output Power (W)6000—
Show all 34 specsShow fewer specs
SpecEcoFlow Delta Pro 3EcoFlow DELTA 3800 Gen4
Height (")13.4—
Voltage (V)240.0—
FeaturesUSB - Type C—
Voltage Outlet120 V, 240 V—
Length (")27.3—
Weight (lb)114.0—
AC output4,000W continuous, 8,000W surge, 6,000W with X-…—
Cycle life4,000 cycles to 80%—
TypePortable—
With InverterYes

What reviewers say

EcoFlow Delta Pro 3

  • 4.7 / 5151 ratings

Rated 4.7 out of 5 from 151 ratings. Owners treat it as a serious whole-home backup unit rather than a camping battery. The main complaints are its weight and price.

What people mention
  • WeightCriticisedAt about 114 lbs it is hard to move without help or a cart.
  • OutputPraisedOwners report it runs 240V appliances like central AC and well pumps.
  • PriceCriticisedBuyers call it a premium purchase, and expansion batteries push the cost higher.
  • Charging speedPraisedAC fast charging to 80% in about 50 minutes is a commonly noted strength.

EcoFlow DELTA 3800 Gen4

Owners of the DELTA 3800 line praise the big LFP capacity, strong surge handling and fast solar charging, and many use it as a home backup unit. The main complaints are weight and size, plus the cost of expanding to the full 12kWh.

What people mention
  • CapacityPraisedOwners like that 3,763Wh covers long outages and expands to 12kWh.
  • WeightCriticisedAt 67.5 lbs it is hard to lift and move without help.
  • Surge powerPraisedThe 7,200W surge starts motors and pumps that stall smaller stations.
  • Solar inputPraisedUp to 2,000W of solar recharges it quickly on sunny days.

Questions and answers

Which is better for running a home during an outage?
The Delta Pro 3. Its 240V output and 4,000W continuous power can run a well pump or dryer, and it expands to 24kWh. The 3800 Gen4 is 120V only and caps at 12kWh.
Which is easier to move around?
The Delta 3800 Gen4 at 67.5 lbs. The Delta Pro 3 weighs about 114 lbs, so plan on two people or a cart.
Do both handle sensitive electronics?
Yes. Both list UPS transfer of 10ms or under, so a desktop or router can ride through a brief outage on either.
Is the Delta Pro 3 worth stepping up to?
If you need 240V, more than 3,600W, or expansion past 12kWh, yes. If you only charge phones, laptops and a fridge on 120V, the 3800 Gen4 covers it in a lighter package.
Which lasts longer?
Both use LFP cells. EcoFlow rates the Pro 3 at 4,000 cycles to 80% capacity; the 3800 Gen4 uses automotive-grade LFP but doesn't publish a cycle count, so the Pro 3 has the clearer longevity figure.
Which charges faster from solar?
The Delta Pro 3, at 2,600W across two MPPT ports versus 2,000W on the 3800 Gen4.

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—
Battery Capacity4,096 Wh battery—
Base Battery Capacity—3,763Wh
Battery Chemistry—Automotive-Grade LFP (LiFePO4)
Expandable Battery Capacity—Up to 12kWh (with extra batteries)
Rated AC Output—3,600W (X-Boost up to 4,600W)
Surge Power—7,200W
Output Voltage—120V Pure Sine Wave
Max Solar Input—2,000W
UPS Transfer Time—< 10ms
No-Load AC Power Draw—14W
Standby Power Draw—3W
Dimensions & Volume—37.74 liters