Head-to-head test
EcoFlow DELTA 3000 Gen4 vs EcoFlow DELTA Pro 3Half the DELTA Pro 3's Weight, and It Can't Grow. Is That Enough?
EcoFlow DELTA 3000 Gen4 vs EcoFlow DELTA Pro 3: half the weight, but 1,024 Wh less battery, no 240 V and no way to add more. For 120 V backup from one box, buy the DELTA 4 (3000). Pick the DELTA Pro 3 only if you need 240 V or a battery bank that grows.
Black Friday · 23 days out
Price to beat:DELTA Pro 3 $2,399
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Full profiles: EcoFlow DELTA 3000 Gen4 → · EcoFlow DELTA Pro 3 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
The DELTA 4 (3000) does the DELTA Pro 3's 120 V job at half the weight.
It runs 3,600 W against the Pro 3's 4,000 W, and its rated surge is the higher of the two, 7,200 W against 6,000 W. It weighs 57.3 lb. The DELTA Pro 3 weighs 113.5 lb, a two-person lift.
What it gives up is everything that connects to something bigger.
The Pro 3 holds 4,096 Wh against 3,072 Wh, has two 240 V outlets, and takes extra batteries. The DELTA 4 (3000) has no battery port at allA6. The battery you buy is the battery you keep.
It also costs less, and less per watt-hour.
EcoFlow lists the DELTA 4 (3000) at $1,699 against $2,799 for the DELTA Pro 3. It went on sale November 4 and ships in early DecemberA10. The Pro 3 is on sale now.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
rated cycles
A fridge, a furnace blower and a sump pump start one at a time and then run together well inside 3,600 W. The loads that don't fit are the 240 V ones, on the circuits in your panel with a double-width breaker: a deep well pump, an electric dryer, a range. The DELTA 4 (3000) can't feed those at any wattage.
DELTA 4 (3000): 3,600 W continuous, 7,200 W rated surge, all outlets at 120 VA2A3DELTA Pro 3: 4,000 W continuous, 6,000 W rated surge, two 240 V outletsA motor pulls two to three times its running watts for a moment as it starts
Why it mattersList the circuits you'd want on battery. If none has a two-pole breaker, the Pro 3's best feature is one you'd never use.
solar input
In a one-night outage that gap never shows. In a three-day storm the DELTA 4 (3000) can only refill from the wall it no longer has or through one 1,000 W solar input, and it can never add a battery to bridge the gap. The Pro 3 starts deeper, takes more sun, and grows. EcoFlow kept the battery port for the bigger DELTA 4A6.
DELTA 4 (3000): 3,072 Wh, no extra-battery portA68-Hour Blackout leaves the DELTA 4 (3000) with 966 Wh and the DELTA Pro 3 with 1,837 WhSolar input: 1,000 W on one input against 2,600 W
Why it mattersIf your outages run past a night and you won't have a real array, buy the capacity now, because this box can't add it later.
Capacity
Cycled every day, that's 16.4 years against 11 by our engine's count. A box that works for a living, filling from panels at a cabin or riding along every weekend, wears through the Pro 3's rating first. A box that sits full in a closet waiting for storms barely touches either number.
DELTA 4 (3000): 6,000 cycles at 3,072 WhDELTA Pro 3: 4,000 cycles at 4,096 WhRated lifetime energy: 18,432 kWh against 16,384 kWh
Why it mattersIf it will cycle often, the DELTA 4 (3000) is the longer-lived battery as well as the cheaper one.
The specific dimensions that decide these two units — everything else is a tie.
Growth Path
Selected because: The DELTA 4 (3000) is sealed at 3,072 Wh. The DELTA Pro 3 starts at 4,096 Wh and takes extra batteries.
solar input
Here's the real weakness of my pick: 3,072 Wh is the ceiling. The DELTA 4 (3000) has no extra-battery portA6, so what arrives in December is what you'll own for as long as you own it. The DELTA Pro 3 starts at 4,096 Wh, and reviewers note it grows to 48 kWh with extra batteriesB1.
If you want room to grow but nothing runs on 240 V, look one size up. EcoFlow gave the battery port to the bigger DELTA 4 and not to this oneA6. So the Pro 3 isn't the only way out of a sealed box. It's the way out that also brings 240 V.
What the Specs Don't Tell You
Selected because: Rated surge is 7,200 W against 6,000 W, and only the DELTA Pro 3 has 240 V outlets.
rated cycles
On 120 V, the smaller box gives up very little. Its rated surge is 7,200 W against 6,000 W, so a fridge compressor or a sump pump that starts on the Pro 3 should start here too. Once everything is running, the Pro 3 holds 400 W more.
The Pro 3's real extra is the voltage. Its two 240 V outlets reach the circuits in your panel with a double-width breaker. The DELTA 4 (3000) has four 20 A outlets and one 30 A twist-lockA3, every one at 120 V.
Lifetime Value
Selected because: 6,000 cycles against 4,000, so the smaller battery is rated to deliver more energy over its life.
cost / lifetime kWh
The smaller battery is the cheaper one to own. Spread over its rated life, the DELTA 4 (3000) costs $0.09 per kWh against $0.17 for the DELTA Pro 3, about half as much. Half again as many rated cycles does that, on a lower price.
That only pays if you use it. A box that sits full in a closet for storms runs so few cycles that neither rating ever comes into play, and then the price on the box is the number that mattered. A box that fills from panels every day is where the rating earns its keep.
Portability & Form Factor
Selected because: 57.3 lb against 113.5 lb, for 1,024 Wh less battery.
weight
One of these goes in the car. The DELTA 4 (3000) is 57.3 lb with a handle at each end, and EcoFlow sells a folding cart for it separatelyA7. The Pro 3 is built to roll to one spot and stay there.
Half the weight changes where it lives. A box one person can carry lives in a closet and comes out for storms and camping trips. A box that needs two people tends to stay beside the panel, which is where a 240 V station belongs anyway.
Your Life, Your Pick
Selected because: Both finish one 1,645 Wh night. Only the DELTA Pro 3 has a second night left in it.
The second night is where the Pro 3 earns its battery. Our 8-hour blackout uses 1,645 Wh. The DELTA 4 (3000) finishes with 966 Wh, 59% of another night. The DELTA Pro 3 finishes with 1,837 Wh, more than a full second night.
Everything you carry goes to the DELTA 4 (3000). Weekend Camping and the tailgate go to it because the Pro 3 doesn't come along. A CPAP night and a remote workday fit in either several times over, and its 140 W USB-C port feeds a laptop that wants more than the Pro 3's 100 W.
Every port, labelled
What plugs in where, and how much it takes
EcoFlow DELTA 3000 Gen4
Front panel
- 1USB-C · 140 WOutUp to 140 W (USB-PD up to 28 V at 5 A). The port for a laptop.
- 22× USB-C · 65 WOutUp to 65 W each. EcoFlow says these two and the USB-A share 16 W when two or more are in use at once.
- 3USB-A · 36 WOutUp to 36 W (5, 9 or 12 V at 3 A).
- 430 A twist-lockOutA three-slot twist-lock marked 30A MAX, rated 30 A at 120 V on the US unit.
- 54× 20 A outletsOutFour T-slot 120 V outlets rated 20 A each, sharing 3,600 W continuous and a 7,200 W surge.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table; outlet shapes read by us from EcoFlow’s picture, taken of the Japanese unit, which shares the US panel.
Input side
- 1Solar/DC in · 1,000 WIn11 to 60 V, up to 20 A, 1,000 W.
- 2AC in · 1,800 WIn100–120 V at 15 A. Charges at up to 1,800 W, which at 120 V is the whole of an ordinary 15 A circuit.
No battery port: the 3000 doesn’t take extra batteries.
Photo: EcoFlow · Product image, EcoFlow Japan store · numbers and labels are ours. Ratings from EcoFlow’s US spec table and the panel’s own printing.
EcoFlow DELTA Pro 3
Front panel
- 12× USB-C · 100 WOutTwo USB-C ports, up to 100 W each and 200 W together.
- 22× USB-A · 18 WOutTwo fast-charge USB-A ports, up to 18 W each.
- 34× 20 A outletsOutFour NEMA 5-20 outlets, 120 V at 20 A, switched by the 120V ON/OFF button. The unit gives 4,000 W continuous and a 6,000 W surge.
- 4NEMA 6-20 · 240 VOutA 240 V outlet rated 16.7 A, switched by the 240V ON/OFF button.
- 5L14-30 · 120/240 VOutA twist-lock marked 120V and 240V, rated 16.7 A: the usual plug for a transfer switch or a generator inlet box.
The TT-30 RV outlet (120 V, 30 A), the Anderson port (30 A) and a DC5521 output (5 A) are listed in EcoFlow’s US specs but aren’t in this picture.
Photo: EcoFlow · Product image, EcoFlow US store · numbers and labels are ours. Port names printed on EcoFlow’s panel; outlet types and ratings from EcoFlow’s US store specs; output totals from our catalogue.
Rear panel
- 1Charge-speed switchInSwitches the AC charging speed.
- 22× Solar in · 2,600 WInSOLAR INPUT is the high-voltage port: 30–150 V, 15 A, 1,600 W. SOLAR/CAR INPUT is the low-voltage port: 11–60 V, 20 A, 1,000 W, and also takes a car cable (12 V at 8 A or 48 V at 20 A).
- 3AC power in/outIn · OutCharges from the wall at 100–240 V, 15 A. EcoFlow says this port also connects the Smart Home Panel 2 or the 50 Amp Hub.
- 4Battery portIn · OutOne of two battery ports. Two DELTA Pro 3 extra batteries take one unit to 12 kWh, by EcoFlow’s figure.
- 5Battery portIn · OutThe second battery port.
Shown with the covers closed; each marker points to the cover over the port.
Photo: EcoFlow · Product image, EcoFlow US store · numbers and labels are ours. Port names printed on EcoFlow’s covers; ratings from EcoFlow’s US store specs and FAQ.
Strengths & trade-offs
EcoFlow DELTA 3000 Gen4
Strengths
- +Costs $1,100 less
- +Lighter by 56.2 lb
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Sealed capacity — the DELTA Pro 3 can add batteries to grow past 3,072Wh; this one can't.
EcoFlow DELTA Pro 3
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$1,100) than the DELTA 3000 Gen4.
- –Significantly heavier (+56.2 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
- –Shorter-lived battery — rated for 4,000 charge cycles vs the DELTA 3000 Gen4's 6,000, so it wears out sooner.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
DELTA 3000 Gen4
Both cover the 2,100 Wh. The DELTA 4 (3000) takes it with 511 Wh to spare, because the 113.5 lb Pro 3 isn't coming camping.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
DELTA Pro 3
Both finish the 1,645 Wh night. The DELTA Pro 3 keeps 1,837 Wh, more than a second night. The DELTA 4 (3000) keeps 966 Wh, a bit over half of one.
Battery budget usedlower = more headroom
LOAD Fridge 150W×8h · Router + Modem 20W×8h · LED Lights (4 bulbs) 40W×6h · Phone Charger 15W×3h
SCN-03 · 8 hours · needs 320Wh
CPAP Overnight
Sleep therapy without interruption — the #1 medical use case
Either unit
Both run the 320 Wh night on about a tenth of the battery. Noise can't break the tie: EcoFlow rates the DELTA 4 as a ceiling at heavy load, and neither rating describes a CPAP's small draw. Choose on weight or price.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Either unit
Both power your workstation all day without strain. At these utilization levels the real difference is USB-C for direct laptop charging — 140W on the DELTA 3000 Gen4 against 100W — which beats the inverter for convenience and wastes less energy.
Battery budget usedlower = more headroom
LOAD Laptop 60W×8h · External Monitor 30W×8h · Router + Modem 20W×8h · Phone Charger 15W×2h
SCN-05 · 4 hours · needs 670Wh
Tailgate Party
Game day power for the crew
DELTA 3000 Gen4
The DELTA Pro 3 at 113.5 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the DELTA 3000 Gen4 by default — and it earns it, covering the 670Wh with 1,941Wh to spare. Capacity was never the DELTA Pro 3's problem here; getting to a tailgate was.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither covers 4,685 Wh. The DELTA Pro 3 comes up 1,203 Wh short and can add a battery. The DELTA 4 (3000) comes up 2,074 Wh short and can't.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
The Load Test
RUNTIME = (Wh × 0.85) ÷ LOAD
None of the scenarios above exactly yours? Build it. Toggle what you'd plug in; both units are tested against the combined draw.
Essentials
Comfort & Convenience
High-Draw Appliances
Test duration
8h
Continuous draw
205W
Projected runtime
For this load: DELTA Pro 3 runs 17h vs 12.7h.
$2,799 list · direct from EcoFlow
Planning for more than this? Describe your whole setup and get it sized →
Modeled from the spec record — same math as the tables below. Methodology
Runtime by appliance
Real-world runtime estimates for common appliances, modeled at 85% inverter efficiency.¹
Essentials
The basics you need runningscale 0–232.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–46.4hHigh-Draw Appliances
These reveal the real limitsscale 0–3.5h¹ Runtime = (capacity × 0.85) ÷ appliance watts. Within each group, all bars share one time scale (the group's longest runtime), so lengths are comparable across appliances; identical runtimes collapse into a single blue/orange bar. Actual runtime varies with battery age, temperature, and simultaneous loads — see methodology.
Conclusion
November 4, 2026
Verdict: the EcoFlow DELTA 3000 Gen4
For a 120 V outage plan in one box, I'd buy the DELTA 4 (3000). It runs 3,600 W against 4,000 W, carries the higher rated surge, weighs 57.3 lb against 113.5 lb and costs $1,100 less. EcoFlow rates it for 6,000 cycles against 4,000. The DELTA Pro 3 holds 1,024 Wh more, has two 240 V outlets, takes 2,600 W of solar and grows to 48 kWhB1. If a 240 V circuit has to stay on, or your outages run past one night without much sun, the Pro 3 is the box. It also ships now, while the DELTA 4 (3000) ships in early DecemberA10.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 4, 2026. The links below open EcoFlow's current price.
$1,699.00 · direct from EcoFlow
or check the DELTA Pro 3 price$2,799.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated November 4, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, Tailgating, Apartment Balcony.
Full specifications
ᵈ Derived: price ÷ rated capacity. See the data behind our comparisons →
Comparison ToolAdd more power stations, side by sideOpen Tool →How these numbers are produced
Numeric verification
Every figure on this page traces to our spec database or arithmetic on it — no estimated numbers.
Owner claims
Statements about owner experience are cited to published reviews — see Sources & Research Notes below.
Runtime model
Runtime = (rated capacity × 0.85 inverter efficiency) ÷ device wattage. Solar recharge estimates assume panels deliver 70% of rated output. Cold weather, battery age, and stacked loads reduce real-world results.
Power Score
Computed from 14 published spec dimensions, weighted per use-case bench. Higher is better; a unit must meet a bench's minimum threshold to be rated.
See the full weight table and data sourcing on our methodology page →Class ranking (the star rating)
Each unit's star score is a category ranking, not customer reviews — no buyer opinions feed it. We score every station on size-independent quality (value, output, portability, endurance, ports, warranty, and more), then percentile-rank it against the other units in its capacity class, so a class-leading compact unit and a class-leading whole-home unit can both earn 5★. Here, DELTA 3000 Gen4 rates 4.8/5 (86th percentile of 29 Large-class units), and DELTA Pro 3 rates 3.9/5 (33rd percentile of 22 Home Backup-class units).
How the class ranking is computed →Test Notes & Caveats
Hidden gotchas and advantages we spotted that you won't find on the product page.
DELTA Pro 3: 113.5 lbs Is a Commitment
At 113.5 lbs, this is a two-person lift. Plan your placement carefully. Once it's set up, you won't want to move it. It's a semi-permanent appliance. Pick your spot.
The DELTA 4 (3000) Stops at 3,072 Wh
It has no extra-battery port, so the battery you buy is the battery you keep. The DELTA Pro 3 starts at 4,096 Wh and can add EcoFlow batteries. If your needs might grow, only one of these two follows them.
Surge Power: Inverter Quality Indicator
The DELTA 3000 Gen4 has a 2× surge-to-continuous ratio vs the DELTA Pro 3's 1.5×, and the higher absolute ceiling with it — 7,200W against 6,000W. At 2× it clears the 2× rule of thumb for absorbing motor startups — fridges, AC compressors and power tools briefly draw 2-3× their rated wattage. What decides whether a given motor starts is the ceiling, not the ratio: the DELTA Pro 3 still surges to 6,000W, so check the startup draw of the heaviest thing you plan to run against that figure rather than assuming it trips.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. Both figures are maximums rather than guarantees — they depend on registering the unit in the EcoFlow app, which adds two years to a three-year standard term. Worth saying because the per-dollar framing can suggest otherwise: the DELTA 3000 Gen4 works out at 2.9 years of cover per $1,000 spent against the DELTA Pro 3's 1.8, but that spread is the price gap, not the terms.
Battery Lifespan in Real Years
The DELTA 3000 Gen4 is rated for 6,000 cycles vs 4,000. In real life: at daily use, that's 16.4 vs 11 years. At weekend use (twice a week), it's 58 vs 38 years. One caution reading years across different sizes: a cycle is 3,072Wh on the DELTA 3000 Gen4 and 4,096Wh on the DELTA Pro 3, so count lifetime energy — roughly 18,432 kWh against 16,384 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Full record above — the Test Desk pick is the DELTA 3000 Gen4.
Check DELTA 3000 Gen4 price →or check the DELTA Pro 3 priceOwnership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The DELTA 3000 Gen4 wins on both sticker price and long-term value. At $0.09/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Growth path
DELTA 3000 Gen4
FIXED CAPACITYFixed at 3,072Wh — a sealed, complete system rather than a starting point. There's no expansion port, so that figure is the ceiling: check it against your longest unplugged stretch before you buy.
Accepts up to 1,000W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
DELTA Pro 3
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 4,096Wh.
Accepts up to 2,600W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are EcoFlow-specific. You're investing in the EcoFlow ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The DELTA 3000 Gen4 is sealed at 3,072Wh, which is fine if that covers you. The DELTA Pro 3 starts at 4,096Wh and can grow beyond it with EcoFlow expansion batteries — real headroom the DELTA 3000 Gen4 doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
EcoFlow DELTA 3000 Gen4
Nobody owns a DELTA 4 (3000) yet. EcoFlow put it on sale on November 4 and says it ships in early DecemberA10. I went through EcoFlow's US spec table and FAQ, and everything here comes from those plus our own arithmeticA1A2A9.
I'd want to leave it in an unheated garage on a January night. EcoFlow says it runs down to 14°F but only charges from 32°FA9. I'd plug it in at dawn and see whether it takes a charge before the garage warms up.
“Capacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.”
Sources
us.ecoflow.co · jp.ecoflow.co
EcoFlow DELTA Pro 3
What exists comes from reviewers and retailers, not long-term ownersB0. They praise the 4,096 Wh pack, the 240 V output and expansion to 48 kWhB1. The charging gets the most attention: 0 to 80% in about 50 minutes with up to 7,000 W of combined inputB3.
Reviewers love it and still mention the weight. They call it a gold-standard home backup unit and note it weighs about 113.5 lbB4. Its pack is rated for 4,000-plus cycles to 80%B2, fewer than the DELTA 4 (3000)'s rating.
“4,096Wh LFP battery with 4,000W continuous AC output (6,000W with X-Boost) and dual-voltage 120V/240V, expandable to 48kWh.”
Sources
ecoflow.com · amazon.com · homedepot.com · thepowerpick.com · outboundpower.com · techradar.com · thesolarlab.com
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Launch-day ledger: every entry is EcoFlow's own US store and documentation, or our labelled arithmetic. No owner or reviewer evidence exists yet. [DELTA 3000 Gen4 · 12 entries]
- Huge 4,096Wh LFP capacity, 4,000W dual-voltage output, very fast charging, and big expandability are the standout praise; it's heavy at ~113 lbs. [DELTA Pro 3 · 2 entries]
- A1
“Capacity 3,072 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3000 Gen4; buyers and the press call the pair the DELTA 4.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A2
“US unit: 120 V AC, 60 Hz; rated 3,600 W continuous with a 7,200 W surge. It supports X-Boost (EcoFlow refers to the manual for the US X-Boost figure); X-Boost is unavailable while the unit charges from the wall or runs in bypass.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A3
“AC outlets: 5 total, four rated 20 A max and one rated 30 A max (on EcoFlow's product images, four T-slot outlets and a three-slot twist-lock). USB-A: one port, 36 W max. USB-C: one at 140 W max and two at 65 W max; the two 65 W ports share circuitry with the USB-A, limited to 16 W total when used together. No 12 V car socket.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A4
“AC input 100–120 V, 15 A, 50/60 Hz; X-Stream charging up to 1,800 W from a US wall outlet. Our arithmetic: 1,800 W at 120 V is 15 A, the full rating of an ordinary 15 A circuit, so on a shared circuit you would set the charge rate lower in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A6
“No extra-battery port. EcoFlow lists expansion only for the DELTA 3800 Gen4 (two extra batteries through its expansion adapter); the 3000 is sealed at 3,072 Wh.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A7
“Weight 57.3 lb (26 kg); 16.77 × 11.36 × 12.09 in without handles, 18.76 in long with them. A handle at each end; EcoFlow sells a folding transport cart separately ($109 at launch, listed at $199). EcoFlow calls it the smallest and lightest portable power station in its class (3 kWh and 3,600 W).”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A9
“Rated for 6,000 cycles (EcoFlow: "15+ years"). Charges at 32–113°F (0–45°C), runs at 14–113°F (−10–45°C). Wi-Fi and Bluetooth with the EcoFlow app. Warranty: 3 years plus a 2-year extension when registered in the EcoFlow app.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A10
“On sale at us.ecoflow.com from November 4, 2026 at $1,699; EcoFlow says it ships in early December. Kit with two 160 W solar panels $2,299. EcoFlow also sells it in Japan, where it went on sale October 30 at ¥179,900.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B1
“4,096Wh LFP battery with 4,000W continuous AC output (6,000W with X-Boost) and dual-voltage 120V/240V, expandable to 48kWh.”
ecoflow.com / amazon.com — DELTA Pro 3 · 2026 · [positive]
- B2
“LiFePO4 rated for 4,000+ cycles to 80% (10+ years), with an IP65 battery rating.”
homedepot.com / thepowerpick.com — DELTA Pro 3 review · 2026 · [positive]
- B3
“Multi-charge technology reaches 0-80% in about 50 minutes using up to 7,000W input, with a full charge in roughly 90 minutes; up to 2,600W solar.”
outboundpower.com / techradar.com — DELTA Pro 3 review · 2026 · [positive]
- B4
“Weighs about 113.5 lbs; reviewers call it a gold-standard whole-home backup unit for 2026.”
techradar.com / thesolarlab.com — DELTA Pro 3 review · 2026 · [positive]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3000 Gen4 if you…
- →Your outage list runs on 120 V. A fridge, a furnace blower, a sump pump and the router fit inside 3,600 W.
- →It lives in a closet and comes out for storms. 57.3 lb with a handle at each endA7.
- →You'll cycle it often. EcoFlow rates it for 6,000 cycles against the Pro 3's 4,000.
- →You're sure 3,072 Wh is enough. It can't add a battery laterA6, so be honest with yourself on this one.
Buy the DELTA Pro 3 if you…
- →You're feeding a panel through a transfer switch with 240 V circuits on it.
- →You want to grow toward whole-house backup. Reviewers note it expands to 48 kWhB1.
- →You'll live on solar between outage nights. It takes 2,600 W against 1,000 W.
- →You need it before December. It's on sale now at $2,799, and the DELTA 4 (3000) ships in early DecemberA10.
If neither fits
If you want room to grow and nothing in your house runs on 240 V, skip both. The bigger DELTA 4 has the battery port this one lacksA6, without paying for 240 V you'd never use.
The Bottom Line
If your outage plan runs on 120 V and fits in 3,072 Wh, I'd buy the DELTA 4 (3000). It does the Pro 3's 120 V job at half the weight, costs less, and is rated for more cycles.
If you need 240 V, a full second night, or a bank that grows, buy the DELTA Pro 3. The DELTA 4 (3000) is sealed, and no accessory changes that.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Can the EcoFlow DELTA 4 (3000) take extra batteries?
No. It has no extra-battery port, so 3,072 Wh is all it will ever hold. The DELTA Pro 3 starts at 4,096 Wh and takes EcoFlow's expansion batteries. EcoFlow's bigger DELTA 4 also takes extra batteries.
How much is the DELTA 4 (3000), and when does it ship?
EcoFlow lists it at $1,699 on its US store, and it ships in early December. The DELTA Pro 3 sells for $2,799 and is on sale now.
Does the DELTA 4 (3000) have 240 V outlets?
No. Its five outlets are all 120 V: four rated 20 A and one 30 A twist-lock. The DELTA Pro 3 has two 240 V outlets.
Which one charges faster?
The DELTA Pro 3 on solar: it takes up to 2,600 W against 1,000 W on the DELTA 4 (3000)'s one input. Reviewers put the Pro 3 at 0 to 80% in about 50 minutes with up to 7,000 W of combined input. The DELTA 4 (3000) charges from the wall at up to 1,800 W.
Is the DELTA 4 (3000) powerful enough to replace a DELTA Pro 3?
For 120 V loads, nearly. It runs 3,600 W against 4,000 W, and its rated surge is 7,200 W against 6,000 W. It can't feed 240 V circuits, and it holds 1,024 Wh less with no way to add more.
Where to buy
EcoFlow DELTA 3000 Gen4Pick
$1,699.00
$1,699.00 · direct from EcoFlow
EcoFlow DELTA Pro 3
$2,799.00
$2,799.00 · direct from EcoFlow
Last checked 31 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.