DELTA 3 Plus
- you’ll carry it: 27.6 lb
- your loads stay under 1,800W at 120V
- you want to start at 1kWh and add batteries later
DELTA Pro 3
- you need 240V for a well pump or a transfer switch
- you run 4,000W or 2,600W of solar
- you want 4,096Wh in one box, 12kWh later
Prices and stock checked by our price engine on November 5, 2026 at 6:30 AM EST. Each product is rechecked several times a day; the time refreshes when you load the page.
One you carry to the kitchen counter. The other you park by the electrical panel and leave there.
The EcoFlow DELTA 3 Plus stores 1,024Wh and delivers 1,800W from six outlets at 27.6 lb, with a 10ms UPS, 1,000W of solar and room for extra batteries up to about 5kWh. The EcoFlow DELTA Pro 3 stores 4,096Wh and delivers 4,000W at 120V and 240V, with an L14-30 for a transfer switch, 2,600W of solar and about 12kWh of expansion, at 113.5 lb. Prices sit $2,080 apart today. If nothing in your house needs 240V and a fridge for a day is enough, the Plus does the job; for a well pump, a dryer circuit or a panel hookup, only the DELTA Pro 3 is in the running.
Below: the differences with numbers, a 20-second calculator for your own gear, eight modeled situations, the cost of building either one up to 4kWh and beyond, a middle option, and what published tests found on each.
Different classes. The DELTA Pro 3 stores four times the energy, delivers 4,000W at 120V and 240V and takes 2,600W of solar; the DELTA 3 Plus weighs a quarter as much and covers 120V loads up to 1,800W. Prices sit $2,080 apart today.
- you carry it: 27.6 lb
- your loads stay under 1,800W
- 1kWh now, more later
- you need 240V or a panel link
- you run 4,000W
- you’ll use 2,600W of solar
The five differences that decide it
Both use LFP cells rated for 4,000 cycles to 80%, the EcoFlow app over Wi-Fi and Bluetooth, X-Boost for heating loads, a 10ms UPS and extra-battery ports; both take a DELTA Pro 3 Extra Battery. These five gaps decide it.
Will it run your setup? Check in 20 seconds
Estimates use 85% usable capacity and 70% of rated solar output. Real results vary with temperature, inverter load, shade and appliance cycling. Fridge and freezer watts are daily averages and do not include compressor startup surges.
Runtime by appliance, one at a time
Simple energy estimates, not measured runtimes. About 870Wh usable on the DELTA 3 Plus and 3,482Wh on the DELTA Pro 3; StorageReview measured 910Wh out of a DELTA 3 Plus and OutdoorGearLab 3,790Wh out of a DELTA Pro 3.
Appliance for appliance, the DELTA Pro 3 lasts 4.0 times as long as the Plus.
Same appliance, same watts: the gap is always the size of the battery.Get our Black Friday alerts for EcoFlow
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The price gap, in numbers
The EcoFlow DELTA Pro 3 costs $2,080 more than the EcoFlow DELTA 3 Plus and adds 3,072Wh: that is $0.68 per extra Wh, against $0.70 per Wh for the Plus.
Prices refresh daily from EcoFlow US.What the $2,080 buys: three times more battery (4,096Wh vs 1,024Wh), 240V and 2,200W more output.
Adding a DELTA Pro 3 Extra Battery to a DELTA 3 Plus gets you past the DELTA Pro 3’s capacity, but not its output: you stay at 1,800W and 120V, with 1,000W of solar. That battery fits both stations, so it moves with you if you trade up. EcoFlow US prices move often; the figures here are refreshed daily by our price engine.
The third option: the DELTA 3 Max Plus at $1,149
EcoFlow DELTA 3 Max Plus: $1,149 today
The middle ground if 1kWh is too little and 240V isn’t needed: 2,048Wh and 3,000W from four 20A outlets, a 30A Anderson port, 1,000W of solar, 0 to 80% from the wall in 64 minutes and expansion to about 10kWh, at 48.7 lb. It stays at 120V like the Plus. See the DELTA 3 Max Plus at EcoFlow.
Eight modeled situations, worked out
Same formula as the calculator above: 85% of the rated capacity, no extra battery. The fridge averages 60W, about 525kWh a year.
24-hour outage, essentials only
The DELTA Pro 3 covers a day and a half; the DELTA 3 Plus gets you through the night, or about a day with one DELTA 3 Extra Battery.
A full-size fridge, nothing else
About 14 hours on the Plus, about two and a half days on the DELTA Pro 3.
CPAP, every night
Two to three nights on the Plus, more than ten on the DELTA Pro 3. OutdoorGearLab ran CPAP machines from a DELTA Pro 3 overnight without noticing its fan.
A 240V well pump
Only the DELTA Pro 3, through its L14-30 or 6-20R outlet. A 120V pump under 1,800W runs on both, if its start-up surge stays under the Plus’s 3,600W.
A space heater on high
About 35 minutes on the Plus, a little over two hours on the DELTA Pro 3. Trusted Reviews ran a 1,000W heater for almost exactly an hour on a DELTA 3 Plus.
Refill from solar, each at its maximum
The Plus fills sooner because its battery is a quarter the size; the DELTA Pro 3 banks four times the energy per sunny day, if you own 2,600W of panels.
Refill from the wall before a storm
The Plus is full in under an hour. From a 120V outlet, Digital Trends and OutdoorGearLab both needed about three hours for the DELTA Pro 3; a 240V outlet gets it to 80% in 50 minutes.
Moving it
The Plus is a one-hand carry. The DELTA Pro 3 rolls on wheels, but reviewers weighed it at 114 to 115 lb and found it hard to move around a campsite.
Nine more differences, the spec sheet and the box
Smaller gaps that rarely decide the purchase, then the full specifications and what ships in the box.
DELTA 3 Plus and DELTA Pro 3 weight, dimensions and full specifications
Weight: 27.6 lb for the DELTA 3 Plus and 113.5 lb for the DELTA Pro 3. Dimensions: 16 × 8.0 × 11 in and 16.16 × 13.43 × 27.28 in. Everything else is in the sheet below.
EcoFlow DELTA 3 Plus and EcoFlow DELTA Pro 3 full specifications
Every published figure for both units, grouped. Green marks the better value.
What’s in the box
DELTA 3 Plus
- DELTA 3 Plus power station1,024Wh, 27.6 lb
- AC charging cable
- Manuals and warranty card
- Solar cable sold separatelyincluded with the applicable solar bundles
- No extra battery, no Alternator Chargerboth sold separately; EcoFlow sells bundles
DELTA Pro 3
- DELTA Pro 34,096Wh, 113.5 lb
- AC charging cable
- Manuals and warranty card
- Extra battery sold separately
From the EcoFlow US product pages; bundles add the matching cables.
07 · ChargingHow fast each one refills
Shorter bar, faster refill. Each row is scaled to its slower unit.
DELTA 3 Plus: StorageReview measured 1,180Wh drawn from the wall for a full refillDELTA Pro 3: Digital Trends measured close to 5kWh drawn from the wall for a full refill
Our solar times assume panels deliver 70% of their rating; the brands’ figures assume ideal sun.
Every port, side by side
DELTA 3 Plus
DELTA Pro 3
Practical consequence: the DELTA Pro 3 adds the 240V outlets (L14-30 for a transfer switch, 6-20R), a TT-30 for an RV and an Anderson port. The DELTA 3 Plus keeps a car socket the DELTA Pro 3 lacks, six standard outlets and a 140W USB-C.
09 · NoiseNoise and heat: Plus vs DELTA Pro 3
The EcoFlow DELTA Pro 3 is the quieter neighbor in reviews: OutdoorGearLab ran it overnight next to CPAP machines without noticing the fan. The EcoFlow DELTA 3 Plus is rated under 30dB at 600W, but T3 and Trusted Reviews found its fans running even at light loads.
EcoFlow’s figures only; no reviewer published a dB measurement for either.Every figure we found, with its source
What reviewers heard: Fans ran once a port was on and cycled about every minute (T3); they ran even at low loads (Trusted Reviews, UK unit); the unit got warmer than expected on light loads (How-To Geek).
What reviewers heard: Ran overnight with CPAP machines and heaters without the fan being noticed; louder only near its 4,000W maximum (OutdoorGearLab). Digital Trends used it through a heat wave above 90°F.
Measured by a tester Brand figure
- The fans run hardest while fast charging, so lower the charging speed in the app at night.
Cold, heat and storage: Plus vs DELTA Pro 3
The EcoFlow DELTA Pro 3 charges from 32°F to 113°F and runs from 14°F to 113°F. EcoFlow US doesn’t publish its temperature ranges for the EcoFlow DELTA 3 Plus, so charge it above freezing too. Both battery packs are rated IP65.
Figures from EcoFlow US for the DELTA Pro 3; EcoFlow US publishes no temperature range for the DELTA 3 Plus.- In a garage in winter, bring either one inside to charge: the DELTA Pro 3 doesn’t charge below 32°F, and EcoFlow US publishes no charging range for the DELTA 3 Plus.
- For storage, keep the DELTA Pro 3 between 68°F and 86°F, EcoFlow’s recommended range.
App, UPS and smart features
The EcoFlow DELTA Pro 3 does more around the house: 240V, the Smart Home Panel 2 and automatic Smart Generator starts. The EcoFlow DELTA 3 Plus matches it on the 10ms UPS and extra batteries, and lists time-of-use and storm alerts.
Same app and same 10ms UPS. The gap is 240V and home integration.Green zone: a switch under about 16ms, which most desktop PCs ride through without restarting.
Does it deliver 240V? The EcoFlow DELTA 3 Plus is 120V only; well pumps, dryers and 240V transfer switches need the EcoFlow DELTA Pro 3.
Does it connect to a home panel? The EcoFlow DELTA Pro 3 pairs with the Smart Home Panel 2, with app control of up to 12 circuits, and feeds a transfer switch from its L14-30. EcoFlow lists no panel option for the EcoFlow DELTA 3 Plus.
Can it start a generator by itself? The EcoFlow DELTA Pro 3 starts an EcoFlow Smart Generator by itself. The EcoFlow DELTA 3 Plus charges from a Smart Generator at 1,500W through its XT150 port.
Does it work as a UPS? Both switch in 10ms; StorageReview measured just over 8ms on the EcoFlow DELTA 3 Plus.
Can you add a battery later? Both take extra batteries: the EcoFlow DELTA 3 Plus to about 5kWh, the EcoFlow DELTA Pro 3 to about 12kWh with two DELTA Pro 3 Extra Batteries. That battery fits both.
Can it charge off-peak? EcoFlow lists time-of-use settings for the EcoFlow DELTA 3 Plus and Scheduled Tasks for the EcoFlow DELTA Pro 3, so both can be set to charge off-peak.
How does the app connect? Both use the EcoFlow app over Wi-Fi and Bluetooth; the EcoFlow DELTA Pro 3 adds CAN for EcoFlow’s home system.
Warranty and support
EcoFlow’s US warranty table lists the EcoFlow DELTA 3 Plus at 5 years with no condition. It lists the EcoFlow DELTA Pro 3 at 5 years too, but the DELTA Pro 3 product page shows 3 years plus 2 on app registration, so register it.
Both reach 5 years; only the DELTA Pro 3 may need the app.Subject to each brand’s warranty terms and eligibility.
EcoFlow rates both at 4,000 cycles to 80%, about 11 years at one full cycle a day. Calendar aging and heat also reduce capacity, so read the rating as a ceiling.
- Register the DELTA Pro 3 in the EcoFlow app the day it arrives: its product page ties the last 2 years to registration.
What reviewers report
We have not lab-tested these two units. Here is what 11 published reviews found, with the source, author and date for each point. Reviews of UK and EU units are flagged: those models charge from 230V outlets and have different sockets, so their charge times and outlet findings don’t carry over to US units.
DELTA 3 Plus: StorageReview (January 2025), Trusted Reviews (February 2025, UK unit), How-To Geek (January 2025), T3 (January 2025), TechRadar (February 2025)DELTA Pro 3: Digital Trends (June 2024), OutdoorGearLab (January 2026), TechRadar (March 2025), RV.com (July 2024), The Gadgeteer (October 2024), Techspective (July 2025)
Usable capacity
- PlusReviewer A full discharge delivered 910Wh from the 1,024Wh pack, about 89 percent. StorageReview, Dylan Dougherty, January 2025
- PlusReviewer A 1,000W heater ran almost exactly one hour and drew 888Wh, about 87 percent of rated capacity. Trusted Reviews, Harry Duncton, February 2025, UK unit
- DELTA Pro 3Reviewer Averaged 3.7kWh of discharge over several cycles, a little under the 4kWh rating. Digital Trends, Simon Sage, June 2024
- DELTA Pro 3Reviewer Test jig measured 3,790Wh from the 4,096Wh battery, over 93%, well above average for power stations. OutdoorGearLab, Kenji Mowrey, January 2026
Charging
- PlusReviewer Refilling from empty took 1,180Wh from the wall, about 87 percent charging efficiency. StorageReview, Dylan Dougherty, January 2025
- PlusReviewer A full mains charge at 1,500W took 55 minutes and used 1,109Wh, about 92 percent efficient. Flag: UK 230V charging. Trusted Reviews, Harry Duncton, February 2025, UK unit
- PlusReviewer AC input peaked at 1,500W but mostly held 1,350 to 1,400W; the battery was full within an hour. How-To Geek, Mark LoProto, January 2025
- DELTA Pro 3Reviewer A full charge from empty drew close to 5kWh from the wall and took about three hours. Digital Trends, Simon Sage, June 2024
- DELTA Pro 3Reviewer Never reached the full 1,800W input on a 15A outlet: peak near 1,600W, average 1,293Wh per hour, full charge within 3 hours. OutdoorGearLab, Kenji Mowrey, January 2026
Noise and heat
- PlusReviewer Fans tended to run even at low loads, which the reviewer found distracting. Trusted Reviews, Harry Duncton, February 2025, UK unit
- PlusReviewer With a 700W vacuum running, the station fan was still audible over the vacuum. How-To Geek, Mark LoProto, January 2025
- PlusReviewer The unit got warmer than expected even on light loads, and the reviewer questions its temperature control. How-To Geek, Mark LoProto, January 2025
- DELTA Pro 3Reviewer Used through an East Coast heat wave, routinely above 90 degrees F, which let the reviewer test its operating limits. Digital Trends, Simon Sage, June 2024
- DELTA Pro 3Reviewer Ran overnight with CPAP machines and heaters without the fan being noticed; fan gets louder only near its 4,000W maximum. OutdoorGearLab, Kenji Mowrey, January 2026
UPS and output
- PlusReviewer Measured UPS transfer time was just over 8ms with a workstation load, inside EcoFlow’s 10ms claim. StorageReview, Dylan Dougherty, January 2025
- PlusReviewer In simulated outages the router, modem, computer and monitor stayed on without any blips. TechRadar, Collin Probst, February 2025
- DELTA Pro 3Reviewer Reviewer pushed it to add charge to a Tesla, and says it can run an industrial popcorn machine for hours. TechRadar, Collin Probst, March 2025
- DELTA Pro 3Reviewer Used as a UPS and home backup; the reviewer cites EcoFlow’s 10ms switchover for critical appliances. TechRadar, Collin Probst, March 2025
- DELTA Pro 3Reviewer Powers a garage gym circuit including a 12,000 BTU air conditioner, TV, treadmill and other gear, kept topped up from a 120V 20A outlet. The Gadgeteer, Julian Perry, October 2024
Daily use and issues
- PlusReviewer The app showed the unit charging at about 1.45kW against its 1500W rating. StorageReview, Dylan Dougherty, January 2025
- PlusReviewer Only three of the AC outlets are three-pronged, listed as the main drawback. TechRadar, Collin Probst, February 2025
- DELTA Pro 3Reviewer At 115 lb, the reviewer says it barely counts as portable. Digital Trends, Simon Sage, June 2024
- DELTA Pro 3Reviewer Measured weight 114.1 lb, versus 97.5 lb for the original DELTA Pro. OutdoorGearLab, Kenji Mowrey, January 2026
- DELTA Pro 3Reviewer Weight listed as the main drawback alongside price. TechRadar, Collin Probst, March 2025
Practical limits before you buy
- The DELTA 3 Plus has no 240V. Well pumps, dryers and 240V transfer switches need the DELTA Pro 3.
- The DELTA Pro 3 weighs 113.5 lb. It rolls, but reviewers found it hard to move around a campsite; plan where it lives.
- The DELTA Pro 3’s fastest charging needs a 240V outlet. On 120V it takes about three hours, and OutdoorGearLab never saw the full 1,800W on a 15A outlet.
- The DELTA Pro 3 has no car socket. 12V gear plugs into its Anderson port or DC5521, 378W total.
- Only three of the DELTA 3 Plus’s outlets are three-prong, per TechRadar.
- X-Boost is for heating loads only. Motors need the continuous rating: 1,800W or 4,000W.
- Register the DELTA Pro 3 in the app: its product page ties the last 2 years to registration.
Frequently asked questions
What is the difference between the EcoFlow DELTA 3 Plus and the DELTA Pro 3?
Class. The DELTA Pro 3 stores 4,096Wh and delivers 4,000W at 120V and 240V, with 2,600W of solar, at 113.5 lb. The DELTA 3 Plus stores 1,024Wh and delivers 1,800W at 120V, with 1,000W of solar, at 27.6 lb.
Can the DELTA 3 Plus run a well pump?
A 120V pump under 1,800W, yes, if its start-up surge stays under 3,600W. A 240V pump needs the DELTA Pro 3.
Can they share extra batteries?
Yes: EcoFlow lists the DELTA Pro 3 Extra Battery for both. On the DELTA 3 Plus it brings the total to about 5kWh; the DELTA Pro 3 takes two, for about 12kWh.
How long will each run a refrigerator?
At a 60W average: about 14.5 hours on the DELTA 3 Plus and about 58 hours on the DELTA Pro 3.
Which one charges faster?
From a 120V outlet, the DELTA 3 Plus: 56 minutes to full against about three hours. From a 240V outlet, the DELTA Pro 3 reaches 80% in 50 minutes.
Can either connect to my home’s panel?
The DELTA Pro 3 feeds a transfer switch from its L14-30 and pairs with EcoFlow’s Smart Home Panel 2. The DELTA 3 Plus has no 240V or 30A outlet for that.
How much do they weigh?
27.6 lb for the DELTA 3 Plus and 113.5 lb for the DELTA Pro 3; reviewers weighed the DELTA Pro 3 at 114 to 115 lb.
Is there a middle option?
The DELTA 3 Max Plus: 2,048Wh and 3,000W at 120V, 1,000W of solar and expansion to about 10kWh, at 48.7 lb.
Related comparisons and reviews
How we compared and sources
Research-based comparison. We have not physically tested these two units. Specs come from the EcoFlow US product pages and warranty table; usage observations are attributed to named reviewers. Prices and availability were checked on October 31, 2026.
- Specs: EcoFlow US, DELTA 3 Plus, and EcoFlow US, DELTA Pro 3, read on October 31, 2026; warranty terms from the EcoFlow US warranty policy.
- Reviewer reports on the DELTA 3 Plus: StorageReview, Dylan Dougherty, January 2025, Trusted Reviews, Harry Duncton, February 2025, UK unit, How-To Geek, Mark LoProto, January 2025, T3, Matt Kollat, January 2025, TechRadar, Collin Probst, February 2025; on the DELTA Pro 3: Digital Trends, Simon Sage, June 2024, OutdoorGearLab, Kenji Mowrey, January 2026, TechRadar, Collin Probst, March 2025, RV.com, Kraig Becker, July 2024, The Gadgeteer, Julian Perry, October 2024, Techspective, Tony Bradley, July 2025.
- Runtime = capacity × 0.85 ÷ watts. Solar harvest = min(panel watts, max input) × sun hours × 0.70. Cost per lifetime kWh = price ÷ (cycles × capacity in kWh).
1,024Wh and 1,800W at 27.6 lb against 4,096Wh, 4,000W and 240V at 113.5 lb. Prices sit $2,080 apart.
Prices checked November 5, 2026 at 6:30 AM EST
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Originally published: November 4, 2026