DELTA 3
- your panels add up to 500W or less
- you charge mostly from the wall (same 56 min)
- 100W USB-C covers your laptop
DELTA 3 Plus
- you’ll run more than 500W of panels (it takes 1,000W)
- your laptop wants 140W over USB-C
- a PC or NAS should shut down on its own in an outage
Prices and stock checked by our price engine on November 13, 2026 at 5:31 AM EST. Each product is rechecked several times a day; the time refreshes when you load the page.
The Plus is a DELTA 3 with a second solar port. Buy it for your roof, not for the battery.
$140 separates the EcoFlow DELTA 3 from the EcoFlow DELTA 3 Plus. It buys 1,000W of solar instead of 500W, faster USB ports and a USB link that tells a PC or NAS to shut down. The battery, inverter, outlets, weight, expansion and warranty are the same, so if your panels stay at 500W or less, the DELTA 3 does the same job.
Below: every difference with numbers, a 20-second calculator for your own gear, eight modeled situations, where the DELTA 3 Classic fits, and what published reviews found.
Same battery, inverter, outlets and weight. The Plus costs $140 more and buys three things: a second 500W solar port, faster USB ports and a USB shutdown link for a PC or NAS.
- your panels add up to 500W or less
- you recharge from the wall most of the time
- 100W per USB-C port is enough for your laptop
- you run more than 500W of solar (it takes 1,000W)
- you charge a laptop at 140W over USB-C
- a PC or NAS must shut down cleanly when the grid drops
The five differences that decide it
Everything else matches: 1,024Wh LFP battery, 1,800W inverter with 3,600W surge, six AC outlets, a 12V socket, 1,500W wall charging, expansion to about 5kWh, 27.6 lb, IP65 battery pack and a 5-year warranty, per EcoFlow US. These five gaps are the whole story.
Watch the full comparison
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. Same 1,024Wh in both, so one column serves the DELTA 3 and the Plus.
Same battery, same runtime.
The DELTA 3 and the Plus both hold about 870Wh usable, so every appliance runs just as long on either one.Get our Black Friday alerts for EcoFlow
We track live prices on 40+ models from Jackery, EcoFlow, BLUETTI and Anker SOLIX. When a deal beats the lowest price we've recorded, you'll hear from us. During Black Friday week, one short recap a day at most.
Unsubscribe in one click. We may earn a commission when you buy through our links, at no extra cost to you. Privacy Policy
The price gap, in numbers
Same 1,024Wh battery: the EcoFlow DELTA 3 costs $140 less than the EcoFlow DELTA 3 Plus.
Prices refresh daily from EcoFlow US.DELTA 3 + Extra Battery costs $140 less today.
Both are rated by EcoFlow US at 4,000 cycles to 80%, so the lifetime card only mirrors the purchase price. The lifetime figure divides the price by the rated cycles times 1.024kWh; it ignores inverter losses and gradual capacity fade, so read it as a ranking, not a bill. The third card shows the expansion route on both: the same DELTA 3 Extra Battery fits either one. EcoFlow US prices and bundles move often; our price engine refreshes the figures daily. Running offers on both, with today’s prices: EcoFlow Black Friday deals.
The third option: the DELTA 3 Classic at $479
EcoFlow DELTA 3 Classic: $479 today
Same 1,024Wh LFP battery and 1,800W inverter, but EcoFlow trims what the DELTA 3 and the Plus share: 3 AC outlets instead of 6, no 12V car socket or DC5521 barrels, no extra battery port, 1,400W wall charging instead of 1,500W, and one 500W solar input. It weighs about 26.6 lb, X-Boost goes to 2,600W, and its 5-year warranty is 3 years plus 2 after app registration. It sits $100 below the DELTA 3 today. DELTA 3 Classic vs DELTA 3 Plus, in one line: the Plus adds 500W more solar, three more outlets, the 12V socket, expansion and 5 years with no registration step, for $240 more. Pick the Classic only if three outlets and 1,024Wh will stay enough. Our DELTA 3 Classic vs DELTA 3 comparison and DELTA 3 Classic review go deeper. See the DELTA 3 Classic at EcoFlow.
Eight modeled situations, worked out
Same formula as the calculator above, with 0 extra batteries unless stated. The fridge averages 60W, about 525kWh a year, in the range printed on typical EnergyGuide labels; that average does not include compressor startup surges.
24-hour outage, essentials only
A tie. Neither covers a full day alone, and both take the same extra battery to get through the night.
CPAP, two nights
A tie: both cover two nights. With the humidifier on (75W), count about 1.5 nights.
Weekend off-grid with 400W of panels
Identical. With 500W of panels or less, the Plus’s second solar port does nothing for you.
Weekend off-grid with 800W of panels
This is where the Plus pulls ahead: 60% more energy from the same panels, enough to refill the battery twice on a good day.
Refill from empty with 1,000W of panels
Half the wait on the Plus. In a short winter day or between clouds, that is the difference between a full battery and a half-full one.
A 140W laptop over USB-C
Both charge it. Under heavy load the DELTA 3’s 100W port may only slow the battery’s decline; the Plus can feed the full 140W. Through the AC outlet and the laptop’s own charger, both run it at full speed, with some inverter loss.
Home office with a NAS through an outage
Same runtime and the same 10ms switchover. The difference is what happens at the end: EcoFlow documents HID over USB on the Plus, so a NAS running NUT can shut down cleanly before the battery runs out.
Two nights in an RV or van
A tie on one charge: both run the fridge from their 12V socket. With 800W of panels on the roof, the Plus banks about 1,050Wh more per sunny day.
Nine things that match, the spec sheet and the box
These specs are identical on the two units, per EcoFlow US. They matter if you compare either one with another brand, not with each other.
DELTA 3 and DELTA 3 Plus weight, dimensions and full specifications
Weight: 27.6 lb (12.5 kg) for both. Dimensions: 15.7 × 8.0 × 11.2 in for the DELTA 3 and 16 × 8.0 × 11 in for the Plus, per EcoFlow US; in millimeters both measure about 398 × 202 × 284. Everything else is in the sheet below.
EcoFlow DELTA 3 and DELTA 3 Plus full specifications
Every published figure for both units, grouped. Green marks the better value.
What’s in the box
DELTA 3
- DELTA 3 power station1,024Wh, 27.6 lb
- AC charging cable
- Manuals and warranty card
- Solar cable sold separatelyEcoFlow Solar to XT60i cable
- No extra battery, no Alternator Chargerboth sold separately; EcoFlow sells bundles
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 solar bundles
- No extra battery, no Alternator Chargerboth sold separately; EcoFlow sells bundles
Bundles with a panel, an extra battery or a charger come with the matching cables. Check the bundle list on EcoFlow US before you order.
07 · ChargingHow fast each one refills
Shorter bar, faster refill. Each row is scaled to its slower unit.
Both: wall and solar together, solar first, 1,500W max combinedBoth: charging speed limiter in the app
Our solar times assume panels deliver 70% of their rating, which is typical on a clear day. EcoFlow’s own figures assume ideal sun. Panel sizing and wiring for each: DELTA 3 solar setup and DELTA 3 Plus solar setup.
Every port, side by side
DELTA 3
DELTA 3 Plus
Practical consequence: the outlet count is the same, so the choice comes down to the second solar input and the USB wattage. OutdoorGearLab and TechRadar both note that only three of the six AC outlets take grounded three-prong plugs; the layout is the same on both.
09 · NoiseNoise and heat: DELTA 3 vs Plus
Same rating on paper: EcoFlow puts the EcoFlow DELTA 3 and the EcoFlow DELTA 3 Plus under 30dB at 600W and under 40dB at 1,200W. Several reviewers heard the Plus’s fans run at low loads; we found no such report for the DELTA 3.
No reviewer published a dB reading for either. Fan behavior on the Plus seems to vary by unit and firmware.Every figure we found, with its source
What reviewers heard: Fans ran with little or nothing plugged in and cycled about every minute as a UPS (T3); fans ran at low loads (Trusted Reviews, UK unit); audible over a 700W vacuum and warmer than expected at light loads (How-To Geek).
Measured by a tester Brand figure
- Cap the AC charging speed in the app: a slower charge runs cooler and quieter overnight.
Cold, heat and storage: DELTA 3 vs Plus
The EcoFlow DELTA 3 charges from 32°F to 113°F and runs from 14°F to 113°F, per its manual. EcoFlow US publishes no window for the EcoFlow DELTA 3 Plus. Both battery packs are rated IP65.
DELTA 3 figures from its user manual (EF-DL-H10-3). Not published for the Plus on EcoFlow US.- In a garage or a vehicle in winter, bring either one inside to charge.
- For storage, keep it between 68°F and 86°F with some charge left, and run a full charge and discharge every three months.
App, UPS and smart features
The EcoFlow DELTA 3 Plus adds one thing: a USB link that tells a PC or NAS to shut down. The EcoFlow DELTA 3 matches it on expansion, UPS speed, off-peak charging, storm alerts and generator control.
Same app, same 10ms UPS. The gap is HID over USB.Green zone: a switch under about 16ms, which most desktop PCs ride through without restarting.
Can it tell a PC or NAS to shut down? The EcoFlow DELTA 3 Plus supports HID over USB with EcoFlow PowerManager and a NUT server; EcoFlow lists no such link for the EcoFlow DELTA 3.
Can you add a battery later? Both take the DELTA 3, DELTA 2, DELTA 2 Max or DELTA Pro 3 Extra Battery, up to about 5kWh.
Does it work as a UPS? Both switch to battery in under 10ms; StorageReview measured just over 8ms on the EcoFlow DELTA 3 Plus.
Can it charge off-peak? Both spec tables list time-of-use settings in the EcoFlow app.
Does it prepare for storms? Both top up the battery when a severe weather alert hits your area, once you turn it on in the app.
Can it start a generator by itself? Both start and stop EcoFlow’s Smart Generator 3000 (Dual Fuel) on their own and charge from it at 1,500W.
Can it run a heater or kettle above its rating? Both run resistive loads up to 2,200W with X-Boost, per their spec tables.
Warranty and support
The EcoFlow DELTA 3 and the EcoFlow DELTA 3 Plus carry the same 5-year warranty from EcoFlow US, with nothing to register.
Same terms, same 4,000-cycle rating. Warranty doesn’t separate them.Subject to each brand’s warranty terms and eligibility.
EcoFlow rates both at 4,000 cycles to 80% capacity, about 11 years at one full cycle a day. Heat and age also wear a battery, so read the rating as a ceiling.
- Keep the receipt and the serial number: neither needs app registration for its 5 years.
What owners and reviewers report
We have not lab-tested these two units. Here is what 6 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: OutdoorGearLab (July 2026)DELTA 3 Plus: StorageReview (January 2025), Trusted Reviews (February 2025, UK unit), How-To Geek (January 2025), T3 (January 2025), TechRadar (February 2025)
Usable capacity
- DELTA 3Reviewer OutdoorGearLab measured 870Wh of usable AC energy from the 1,024Wh pack, about 85 percent. OutdoorGearLab, Kenji Mowrey, July 2026
- 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
Charging
- DELTA 3Reviewer A full wall charge took 50 minutes in their test, a little faster than the 56 minutes EcoFlow advertises. OutdoorGearLab, Kenji Mowrey, July 2026
- 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
- PlusReviewer The 800W car charging input did not reach 800W on the reviewer’s older car. How-To Geek, Mark LoProto, January 2025
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
- PlusReviewer Fans ran constantly once a port was on, even with nothing plugged in, despite the sub-600W quiet claim. T3, Matt Kollat, January 2025
- PlusReviewer Fans cycled on rhythmically about every minute, which hurts its use as a quiet desk UPS. T3, Matt Kollat, January 2025
UPS and output
- DELTA 3Reviewer It kept a refrigerator running overnight in their use. OutdoorGearLab, Kenji Mowrey, July 2026
- 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
Daily use and issues
- DELTA 3Reviewer Only three of the six AC outlets are grounded three-prong sockets, which limits multi-appliance setups. OutdoorGearLab, Kenji Mowrey, July 2026
- DELTA 3Reviewer Measured weight was 28.1 lbs, slightly heavy and long for the 1,000Wh class. OutdoorGearLab, Kenji Mowrey, July 2026
- 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
Practical limits before you buy
- The Plus is not a bigger battery. Same 1,024Wh, same runtime. Its premium pays for solar input and USB, not hours.
- The second solar port only helps above 500W. With one 400W panel, the two units harvest exactly the same energy.
- The weight is the same. EcoFlow US lists 27.6 lb for both; figures above 30 lb seen elsewhere for the Plus don’t match EcoFlow’s spec sheet.
- Extra battery cable: EcoFlow’s Plus page says the compatible extra batteries connect via an Alternator Charger XT150 output cable. Check which cable ships with the battery or bundle you buy.
- Only three of the six AC outlets are grounded three-prong sockets on these units, as OutdoorGearLab and TechRadar note. Check your plugs.
- X-Boost is for heating loads only. Motors need the 1,800W continuous rating; the 3,600W surge covers short startups.
- Neither ships with a solar cable. Order the EcoFlow solar to XT60i cable with your panels, or buy a solar bundle.
- DELTA 3, per its US documentation: Single solar input: 11-60V, 500W max (the DELTA 3 Plus has two).
- DELTA 3, per its US documentation: AC charging and Smart Generator charging capped at 1500W; full charge in 56 minutes.
- DELTA 3, per its US documentation: USB-C limited to 100W per port and USB-A to 18W (lower than the DELTA 3 Plus: 140W and 36W).
- DELTA 3, per its US documentation: Expandable to 5kWh with DELTA 3, DELTA 3 Plus, DELTA Pro 3, DELTA 2 or DELTA 2 Max extra batteries.
- DELTA 3 Plus, per its US documentation: AC and Smart Generator charging capped at 1500W; solar 2 x 500W (11-60V).
Frequently asked questions
What is the difference between the EcoFlow DELTA 3 and the DELTA 3 Plus?
The Plus takes 1,000W of solar on two ports instead of 500W on one, its USB-C ports reach 140W instead of 100W, its USB-A ports 36W instead of 18W, and EcoFlow documents HID over USB so a PC or NAS can shut down cleanly. Battery, inverter, outlets, weight, expansion and warranty are the same.
Is the DELTA 3 Plus worth the extra money?
Only if you’ll use what it adds: more than 500W of panels, a 140W laptop on USB-C, or automatic NAS shutdown. For wall-charged home backup, a CPAP or camping with one panel, the DELTA 3 does the same job. The price section has today’s gap.
Do they have the same battery?
Yes. Both store 1,024Wh in LFP cells rated at 4,000 cycles to 80% capacity, per EcoFlow US. Runtime is identical: about 14.5 hours for a fridge averaging 60W.
Is the DELTA 3 Plus heavier than the DELTA 3?
No. EcoFlow US lists both at 27.6 lb (12.5 kg), with the same footprint of about 398 × 202 × 284 mm.
How much faster does the Plus charge from solar?
Twice as fast, if you own more than 500W of panels: EcoFlow says 70 minutes on 1,000W against 2 hours on 500W. At a realistic 70% of panel rating, count about 1.5 and 2.9 hours.
Can both expand to 5kWh?
Yes. EcoFlow lists the DELTA 3, DELTA 2, DELTA 2 Max and DELTA Pro 3 Extra Batteries for both, up to about 5kWh. The Plus page adds that they connect via an Alternator Charger XT150 output cable.
DELTA 3 Classic vs DELTA 3 Plus: what changes?
The Plus adds 500W more solar, three more AC outlets (6 against 3), a 12V car socket, two DC5521 barrels, battery expansion, 1,500W wall charging instead of 1,400W, and 5 years of warranty with no registration step. The Classic is about 1 lb lighter. See the Classic box above.
DELTA 3 vs DELTA 3 Classic: which one?
The DELTA 3 keeps six outlets, the 12V socket and expansion; the Classic drops them, along with 100W of wall charging. Both take 500W of solar. Our DELTA 3 Classic vs DELTA 3 comparison goes through it.
How does the DELTA 3 Max compare with the DELTA 3 Plus?
The Max doubles the battery (2,048Wh) and delivers 2,400W from four AC outlets, but takes 500W of solar on one port, can’t be expanded and weighs about 44.8 lb, per EcoFlow US. Its 5-year warranty needs app registration. The Plus is the lighter, expandable 1kWh with twice the solar input.
Is there a DELTA 3 Pro?
Not on EcoFlow US. The closest name is the DELTA Pro 3, a much larger 4,096Wh unit.
Do both work as a UPS?
Yes, both switch to battery in under 10ms. StorageReview measured just over 8ms on the Plus. Only the Plus adds the HID link that tells a computer or NAS to shut down.
Can the DELTA 3 charge a 140W laptop?
Yes, at up to 100W per USB-C port, which may slow charging while the laptop works hard. Plugging the laptop’s own charger into an AC outlet gets full speed on either unit, with some inverter loss.
Can I charge them below freezing?
No. The DELTA 3 manual allows charging from 32°F and discharging down to 14°F. EcoFlow US publishes no window for the Plus; follow the same limits.
Will third-party solar panels work?
Yes on both, through the XT60i input: 11 to 60V per port. Stay under 60V open-circuit voltage when you wire panels in series. The DELTA 3 takes one string, the Plus two.
Related comparisons and reviews
How we compared and sources
Research-based comparison. We have not physically tested these two units. Specs come from EcoFlow US documentation; usage observations are attributed to named reviewers. Prices and availability were checked on November 1, 2026.
- Specs: EcoFlow US, DELTA 3 and EcoFlow US, DELTA 3 Plus, read on November 1, 2026.
- Temperature windows of the DELTA 3: EcoFlow DELTA 3 user manual, model EF-DL-H10-3.
- Third option and FAQ: EcoFlow US, DELTA 3 Classic and EcoFlow US, DELTA 3 Max, read on November 1, 2026.
- Reviewer reports on the DELTA 3: OutdoorGearLab, Kenji Mowrey, July 2026; 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.
- Runtime = capacity × 0.85 ÷ watts. Solar harvest = min(panel watts, max input) × sun hours × 0.70. Cost per lifetime kWh = price ÷ (cycles × 1.024kWh).
Same 1,024Wh, 1,800W and 27.6 lb. The Plus adds a second solar port and faster USB for $140 more.
Prices checked November 13, 2026 at 5:31 AM EST
Looking at other models? Browse all power station comparisons, or pick any two models on the hub and we point you to the right duel.
Originally published: March 22, 2026