Head-to-head test
EcoFlow DELTA 3000 Gen4 vs EcoFlow DELTA 3800 Gen4Only One DELTA 4 Takes Extra Batteries. Will You Add One?
EcoFlow DELTA 3000 Gen4 vs EcoFlow DELTA 3800 Gen4: the same 3,600 W inverter; the 3800 adds 691 Wh, a second solar input and a battery port for 10.2 lb more. Buy the DELTA 4 (3000) unless you'll add a battery or run more than 1,000 W of panels.
Full profiles: EcoFlow DELTA 3000 Gen4 → · EcoFlow DELTA 3800 Gen4 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
The DELTA 4 (3800) is the DELTA 4 (3000) with more built around the same inverter.
Both run 3,600 W with a 7,200 W surge at 120 VA2B2, which is the full 30 A of the twist-lock outlet each one carriesA3B3. The 3800 adds 691 Wh, a second solar inputB5 and a battery portB6. It weighs 10.2 lb more.
Every job we run fits in both, bar one.
The camping weekend, the eight-hour blackout, a CPAP night, a workday and a tailgate all finish on either battery. Van Life Daily's 4,685 Wh beats both. So the 691 Wh buys margin, not a job the 3000 can't do.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
As plain battery, those 691 Wh cost more apiece than the average watt-hour in either box. By EcoFlow's own fridge figures they buy twelve more hours on the same fridge, 70 against 58A12B12. That's real, but the step only pays for itself through the port and the second input.
DELTA 4 (3000): 3,072 Wh at $1,699DELTA 4 (3800): 3,763 Wh at $2,199Both: 3,600 W continuous, 7,200 W surgeA2B2EcoFlow's fridge claims: up to 58 hours on the 3000, up to 70 on the 3800A12B12
Why it mattersIf you can't name the battery or the panels you'd add, the 3000 is the better buy.
solar input
Perfect sun is a few hours around noon, and panels rarely make their rating. With 1,000 W of panels or less, the 3800's second input sits empty and its bigger battery needs 3.8 hours of perfect sun to fill, longer than the 3000. The second input only earns its money once you own more panel than one input can take.
DELTA 4 (3000): one solar input, 11 to 60 V, up to 1,000 WA5DELTA 4 (3800): two inputs, 1,000 W each, 2,000 W in allB5Capacities: 3,072 Wh and 3,763 Wh
Why it mattersIf you'll run more than 1,000 W of panels, take the 3800; with one folding panel, buy the 3000.
One DELTA 3 Max Plus battery is 2,048 WhB6, enough to cover the 3800's van-day shortfall even after the page's 85% derate. EcoFlow already sells the 3800 in a kit with that battery, 6 kWh in allB10. The 3000 has no road there.
DELTA 4 (3000): no extra-battery port, sealed at 3,072 WhA6DELTA 4 (3800): up to two extra batteries, DELTA Pro 3 or DELTA 3 Max Plus, 4 to 12 kWh by EcoFlow's figureB6Van Life Daily needs 4,685 Wh; the 3800 comes up 1,486 Wh short
Why it mattersIf more battery is likely in the next year or two, buy the 3800 now, because a port can't be added later.
The specific dimensions that decide these two units — everything else is a tie.
Growth Path
Selected because: Only the DELTA 4 (3800) takes extra batteries; the 3000 stops at 3,072 Wh.
solar input
The battery port is the best reason to step up. The DELTA 4 (3000) has noneA6. The 3800 takes up to two of EcoFlow's DELTA Pro 3 or DELTA 3 Max Plus extra batteries, 4 to 12 kWh by EcoFlow's figureB6.
If I were wiring one into a house, I'd want the one that grows. A 3,600 W inverter feeding a transfer switch will happily run a fridge, the furnace blower and the lights together, and that's the kind of evening that empties a fixed battery. The 3000 owner who outgrows it buys a second power station. The 3800 owner buys a battery.
Your Life, Your Pick
Selected because: Both finish every scenario but Van Life Daily, so the 691 Wh shows up as margin rather than a job only one can do.
The extra 691 Wh shows up as a second night. Both finish the eight-hour blackout. The 3000 ends with 966 Wh, 59% of another night. The 3800 ends with 1,554 Wh, 94% of another night.
Everywhere else, the gap is slack you won't feel. A CPAP night, a workday and a tailgate barely dent either battery. The camping weekend leaves the 3000 with 511 Wh and the 3800 with 1,099 Wh, which is the difference between ignoring the app and checking it at breakfast.
Portability & Form Factor
Selected because: 67.5 lb against 57.3 lb, around the same 3,600 W inverter.
weight
The 3800 is 10.2 lb heavier, and you feel it at the trunk lip. I'd swing 57.3 lb into a trunk without planning it. At 67.5 lb I bend my knees and pick my moment. Both have a handle at each end, and EcoFlow sells a folding cart for eitherA7B7.
For a box that lives by the panel, the weight barely matters. If it moves twice a year, take the bigger battery and don't think about it. If it rides in the truck bed every weekend, the lighter 3000 earns its keep.
What the Specs Don't Tell You
Selected because: Each unit has one catch, and they land on different boxes: weight on the 3800, a fixed ceiling on the 3000.
Each unit carries one catch, and they're different ones. The 3800's is weight. The 3000's is that 3,072 Wh is the ceiling for as long as you own it.
Nothing in the fine print splits them. Same 6,000-cycle rating, same 3 years plus 2 more when registered in the appA9B9, same switchover of no worse than 10 ms. Both take the same 1,800 W from the wallA4B4, so the bigger battery simply fills slower when the grid comes back.
In the makers’ pictures
What you’d actually be living with
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 3800 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
- 12× Solar/DC in · 1,000 WInTwo inputs, each 11 to 60 V, up to 20 A, 1,000 W: 2,000 W of panels in all.
- 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.
- 3Battery portIn · OutTakes up to two of EcoFlow’s DELTA 3 Max Plus or DELTA Pro 3 extra batteries; EcoFlow quotes 4–12 kWh.
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.
Strengths & trade-offs
EcoFlow DELTA 3000 Gen4
Strengths
- +Costs $500 less
- +Lighter by 10.2 lb
Trade-offs
- –Sealed capacity — the DELTA 3800 Gen4 can add batteries to grow past 3,072Wh; this one can't.
EcoFlow DELTA 3800 Gen4
Strengths
- +Larger battery capacity
- +Faster solar charging
Trade-offs
- –Significantly heavier (+10.2 lbs), making it harder to move.
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 3800 Gen4
Both make it to Sunday. The DELTA 4 (3800) gets there with 1,099 Wh still in it against the 3000's 511 Wh, enough slack for a cold night or a friend's dead phone.
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 3800 Gen4
Both get through the night. The DELTA 4 (3800) ends with 1,554 Wh, 94% of a second night; the 3000 ends with 966 Wh, 59% of one. If the lines stay down, that's the gap.
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
A CPAP is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here. Both happen to list 40dB — the same published figure twice, not a measured tie — so there is nothing in the noise column to separate them either. Buy whichever is cheaper or easier to carry.
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, and their USB-C output is a wash — pick on weight, ports, or price.
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
Either unit
A tie on energy: both finish with most of the battery left. The 3000 is 10.2 lb lighter to carry from the truck, and that's the only thing between them here.
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 a day: the 3000 falls 2,074 Wh short and the DELTA 4 (3800) 1,486 Wh. Only the 3800 can add a battery to close it.
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 3800 Gen4 runs 15.6h vs 12.7h.
$2,199 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 0–213.2hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–42.6hHigh-Draw Appliances
These reveal the real limitsscale 0–3.2h¹ 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 DELTA 3000 Gen4
I'd buy the DELTA 4 (3000), unless you'll use something only the 3800 has. Both run the same 3,600 W inverter with a 7,200 W surgeA2B2, and both finish every scenario we run except Van Life Daily, which neither does. The 3800's extra 691 Wh costs $500, which makes each added watt-hour dearer than the average one in either box. What that money really buys is a battery portB6 and a second 1,000 W solar inputB5, plus an earlier delivery: EcoFlow ships the 3800 in late November and the 3000 in early DecemberA10B10. If neither the port nor the panels are in your plan, the smaller box does every job here for less.
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 3800 Gen4 price$2,199.00 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
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 3800 Gen4 rates 4.1/5 (48th 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.
67.5 lb, Handles at Both Ends
The DELTA 4 (3800) weighs 67.5 lb, 10.2 lb more than the 3000. One person can lift it, just not casually; with a handle at each end, two people make it easy. EcoFlow sells a folding cart for either.
The DELTA 4 (3000) Stops at 3,072 Wh
The 3000 has no extra-battery port. The 3800 takes up to two of EcoFlow's extra batteries, DELTA Pro 3 or DELTA 3 Max Plus models. If more battery is anywhere in your plan, that port is the reason to step up.
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 3800 Gen4's 2.3, but that spread is the price gap, not the terms.
Full record above — the Test Desk pick is the DELTA 3000 Gen4.
Check DELTA 3000 Gen4 price →or check the DELTA 3800 Gen4 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
Both units have similar long-term ownership costs ($0.09/kWh vs $0.10/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off. One thing to know reading the table: both carry the same 6,000-cycle rating, so the lifetime rows are sticker price and capacity in disguise — the wear horizon is identical and decides nothing here.
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 3800 Gen4
EXPANDABLESupports EcoFlow expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,763Wh.
Accepts up to 2,000W 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 3800 Gen4 starts at 3,763Wh 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) in the US yet. It went on sale on November 4 and EcoFlow ships it in early DecemberA10, so everything here is EcoFlow's spec table and FAQ plus our arithmeticA1A4.
I'd want to fast-charge it on a shared kitchen circuit. At 1,800 W it draws 15 A at 120 V, the whole rating of a 15 A circuitA4. I'd plug it in beside a running fridge and see whether the app or the breaker gives first.
“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 3800 Gen4
The DELTA 4 (3800) has no owners yet either. It went on sale the same day and EcoFlow ships it in late NovemberB10. What we have is EcoFlow's spec table and FAQB1B5.
I'd want to load both solar inputs at noon. Two strings of panels, one per input, and watch how close the screen gets to EcoFlow's 2,000 WB5. That figure is half the reason to pay for the 3800, so it's the first one I'd check.
“Capacity 3,763 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3800 Gen4; buyers and the press call the pair the DELTA 4.”
Sources
us.ecoflow.co · jp.ecoflow.co
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]
- 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 3800 Gen4 · 12 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]
- A5
“Solar: one input, 11–60 V DC at up to 20 A, 1,000 W (XT60i; an XT60i-to-LP60 cable is in the box). EcoFlow lists six charging methods; its 800 W Alternator Charger is limited to 500 W through the Solar/DC port.”
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]
- A12
“Powers a refrigerator for up to 58 hours, which EcoFlow says is 17 hours (41.5%) longer than the industry average for 3 kWh portable power stations. Both figures are EcoFlow's own claims, not our measurement.”
EcoFlow US store, us.ecoflow.com/products/delta-3000-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [positive]
- B1
“Capacity 3,763 Wh, LFP (LiFePO4) cells. EcoFlow sells it as the DELTA 3800 Gen4; buyers and the press call the pair the DELTA 4.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B2
“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-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B3
“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-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B4
“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-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B5
“Solar: two inputs, 11–60 V DC at up to 20 A and 1,000 W each, 2,000 W total (XT60i; two XT60i-to-LP60 cables are in the box). EcoFlow lists six charging methods; its 800 W Alternator Charger is limited to 500 W through the Solar/DC port.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B6
“Extra Battery Port: up to two extra batteries through EcoFlow's Smart Extra Battery Expansion Adapter. Compatible: the DELTA Pro 3 Smart Extra Battery and the DELTA 3 Max Plus (2,048 Wh) Smart Extra Battery. EcoFlow quotes 4–12 kWh of expandable capacity.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B7
“Weight 67.5 lb (30.6 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 (3–4 kWh and 3,600 W).”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B9
“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-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B10
“On sale at us.ecoflow.com from November 4, 2026 at $2,199; EcoFlow says it ships in late November. Kits: with two 160 W solar panels $2,899; with a DELTA 3 Max Plus extra battery (6 kWh in all) $2,999. EcoFlow also sells it in Japan, where it went on sale October 30 at ¥240,900.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- B12
“Powers a refrigerator for up to 70 hours, which EcoFlow says is 17 hours (32.6%) longer than the industry average for 3–4 kWh portable power stations. Both figures are EcoFlow's own claims, not our measurement.”
EcoFlow US store, us.ecoflow.com/products/delta-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [positive]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3000 Gen4 if you…
- →One box is the whole plan. 3,072 Wh covers every scenario here but Van Life Daily.
- →You'll carry it. 57.3 lb against 67.5.
- →You have one panel or one string. Its single input takes up to 1,000 W at 11 to 60 VA5.
- →You'd rather keep the difference. $500 buys a lot of panel.
Buy the DELTA 3800 Gen4 if you…
- →You'll add a battery. It takes up to two EcoFlow extra batteriesB6; the 3000 takes none.
- →You'll run more than 1,000 W of panels. Two inputs, 2,000 W in allB5.
- →Your outages run two nights. It ends the eight-hour blackout with 94% of a second night still in it.
- →You want it before December. EcoFlow ships it in late November, ahead of the 3000A10B10.
If neither fits
If a well pump or a dryer has to run, close this tab. Neither DELTA 4 has a 240 V outlet, so look at a split-phase home unit instead. And if all you need is a weekend camping box, 57.3 lb is a lot to haul for it; a smaller station will do.
The Bottom Line
I'd buy the DELTA 4 (3000) and keep the difference. Same inverter, same outlets, 10.2 lb lighter, and every scenario the 3800 finishes, it finishes too.
Pay the $500 only for a feature you can name. A battery next year, or more than 1,000 W of panels. If either is in the plan, buy the 3800 now, because a battery port is the one thing you can't add later.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
What's the difference between the DELTA 4 (3000) and the DELTA 4 (3800)?
The 3800 holds 3,763 Wh against 3,072 Wh, has two solar inputs instead of one and takes up to two extra batteries. Both run 3,600 W with a 7,200 W surge. The 3800 weighs 67.5 lb and the 3000 weighs 57.3 lb.
Can you add a battery to the DELTA 4 (3000)?
No. It has no extra-battery port. The DELTA 4 (3800) takes up to two EcoFlow extra batteries, the DELTA Pro 3 or DELTA 3 Max Plus models, for 4 to 12 kWh by EcoFlow's figure.
How much do the DELTA 4 (3000) and DELTA 4 (3800) cost?
EcoFlow lists the DELTA 4 (3000) at $1,699 and the DELTA 4 (3800) at $2,199, a difference of $500. Both are on sale at EcoFlow's US store now.
When do the DELTA 4 (3000) and DELTA 4 (3800) ship?
EcoFlow says the 3800 ships in late November and the 3000 in early December. Both went on sale on November 4.
Is the DELTA 4 (3800) more powerful than the 3000?
No. Both run 3,600 W continuously and surge to 7,200 W. The 3800 has a bigger battery and a second solar input, not a bigger inverter.
Where to buy
EcoFlow DELTA 3000 Gen4Pick
$1,699.00
$1,699.00 · direct from EcoFlow
EcoFlow DELTA 3800 Gen4
$2,199.00
$2,199.00 · direct from EcoFlow
Prices may vary by retailer and are subject to change.