Head-to-head test
EcoFlow DELTA 3800 Gen4 vs BLUETTI Elite 300Only One of These Can Grow. Will You Ever Need It To?
The Elite 300 covers a night without power for less money and 9.5 lb less to lift, and the DELTA 4 (3800) is the one with somewhere to go. I'd buy the Elite, unless you already know 3,014 Wh won't be enough.
Black Friday · 23 days out
Price to beat:Elite 300 $1,099
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Full profiles: EcoFlow DELTA 3800 Gen4 → · BLUETTI Elite 300 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
For a night without power, the Elite 300 is the better buy.
It costs $1,199 against $2,199 for the DELTA 4 (3800), weighs 58 lb to 67.5 lb, and both are rated for 6,000 cyclesA9B1. In our 8-hour blackout, both finish with battery to spare.
What the extra money buys is room to grow.
The DELTA 4 holds 3,763 Wh to the Elite's 3,014 Wh, runs 3,600 W against 2,400 WA2, and takes 2,000 W of solar across two inputs against 1,200 WA5. Then there's the port. It takes up to two of EcoFlow's extra batteries, and EcoFlow quotes 4 to 12 kWh in allA6. The Elite 300 is sealed.
I'd decide this on next year, not this week.
If a fridge, a furnace blower and the internet through one night is the whole job, the Elite does it for less. If you're already pricing a second battery in your head, the DELTA 4 is the box that takes one, and it ships in late NovemberA10.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
One DELTA 3 Max Plus battery holds 2,048 Wh by EcoFlow's figureA6, more than the DELTA 4's 1,486 Wh shortfall even after inverter losses. The Elite's answer to the same day is a second power station, with its own inverter, its own cords and its own patch of floor.
Elite 300: sealed at 3,014 Wh, no expansion portDELTA 4 (3800): up to two extra batteries, including EcoFlow's DELTA 3 Max Plus battery at 2,048 WhA6Van Life Daily needs 4,685 Wh: the DELTA 4 (3800) comes up 1,486 Wh short, the Elite 300 2,123 Wh short
Why it mattersIf your days are going to look like van life, or your house is going to need more than a night, buy the box that grows.
solar input
With 1,200 W of panels or less, both ports take everything you give them and the extra input sits idle. It pays when the battery behind it grows. A DELTA 4 with an extra battery hung off the port has much more to refill, and that's when a second solar input stops being a spec line and starts being the difference between full by evening and not.
DELTA 4 (3800): two solar inputs, 11 to 60 V, 1,000 W each, 2,000 W totalA5Elite 300: 1,200 W of solar inputDELTA 4 (3800): 3,763 Wh, and more once an extra battery is addedA6
Why it mattersCount your panels before you pay for the DELTA 4's solar, and count again if you plan to add a battery.
weight
Both get through the first night. The extra battery only pays if the outage runs on into a second evening, and even then the Elite gets you more than halfway. For $1,000 and 9.5 lb more to carry, that's a lot to spend on a night you may never have.
$1,199 for the Elite 300 against $2,199 for the DELTA 4 (3800)58 lb against 67.5 lb8-Hour Blackout: the DELTA 4 (3800) ends with 1,554 Wh, 94% of a second night; the Elite 300 with 917 Wh, 56%
Why it mattersIf your outages are one-nighters, the Elite 300 already does the job.
The specific dimensions that decide these two units — everything else is a tie.
Growth Path
Selected because: The Elite 300 is sealed at 3,014 Wh, and the DELTA 4 (3800) takes extra batteries.
solar input
This port is the one reason to pay more. It takes EcoFlow's DELTA Pro 3 extra battery or its DELTA 3 Max Plus battery, up to two of them through EcoFlow's adapterA6. EcoFlow also sells the DELTA 4 in a kit with one DELTA 3 Max Plus battery, 6 kWh in allA10. That's home backup you can build in stages.
The Elite 300 is finished the day you buy it. For 3,014 Wh of work, that's fine. Its answer to a bigger job is a second power station, and two boxes sharing a load is a wiring problem I'd rather not have.
Your Life, Your Pick
Selected because: The DELTA 4 (3800) wins the camping and blackout rows on margin, and the Elite 300 still finishes both.
Both get through every ordinary night. In our 8-hour blackout the DELTA 4 finishes with 1,554 Wh left, 94% of a second night, and the Elite with 917 Wh, 56%. The extra battery shows up on day two.
Van Life Daily is where the port earns its keep. It asks for 4,685 Wh. The DELTA 4 comes up 1,486 Wh short and the Elite 2,123 Wh short. One DELTA 3 Max Plus battery holds 2,048 Wh by EcoFlow's figureA6, more than the DELTA 4's shortfall. The Elite has nowhere to put one.
Portability & Form Factor
Selected because: 58 lb against 67.5 lb, and the cheaper unit is the lighter one.
weight
The cheaper box is also the lighter one. The Elite 300 is 58 lb, and reviewers note its certification as the smallest 3 kWh unit by volumeB2. The DELTA 4 (3800) is 67.5 lb, with a handle at each end and a folding cart sold separatelyA7.
9.5 lb is a gallon of water and then some. Into a car, I'd barely notice it. Down basement stairs, I'd want a second pair of hands on the DELTA 4 sooner than on the Elite.
What the Specs Don't Tell You
Selected because: A heater mode that only helps heaters, and a wall charge that can use a whole circuit.
Power Lifting only helps a heater. It runs a resistive appliance rated up to 4,800 W from the Elite's 2,400 W inverter by feeding it less than it asks for. A fridge compressor gets nothing from it. For motors, the number that counts is the surge peak, and there the DELTA 4's 7,200 W beats the Elite's 4,800 W.
The DELTA 4's fastest wall charge uses the whole circuit. It charges at up to 1,800 W, which is 15 A at 120 V, the full rating of an ordinary 15 A circuitA4. On a garage circuit shared with a freezer, I'd turn it down in the EcoFlow app.
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 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.
BLUETTI Elite 300
Front panel
- 112 V car socket · 120 WOutA covered car socket printed 12V/10A; BLUETTI’s store page rates it 120 W.
- 212 V/30 A DC portOutA covered DC output printed 12V/30A. BLUETTI pitches it for an RV’s 12 V gear: lights, fans, a water pump.
- 3Solar/DC in · 1,200 WInPrinted 12V-60V/22A/1200W: up to 1,200 W of solar. BLUETTI’s store page also lists car charging: 100 W from a 12 V socket, 200 W from 24 V.
- 42× USB-C · 2× USB-AOutUSB-C printed 100W on the left and 140W on the right, with two USB-A ports between them printed 15W each (30 W together, BLUETTI says).
- 5TT-30 RV outlet · 30 AOutA NEMA TT-30 outlet, by BLUETTI’s store page: a camper’s 30 A shore-power cord plugs straight in.
- 64× 120 V outletsOutFour T-slot 120 V outlets. With the RV outlet they share 2,400 W (printed on the panel) and a 4,800 W surge.
Photo: BLUETTI · Product image, BLUETTI store · numbers and labels are ours. Ratings printed on BLUETTI’s panel and listed on BLUETTI’s US store page; the surge figure from our catalogue.
Input side
- 1AC in · 1,800 WInThe AC charging inlet, behind a cover: up to 1,800 W, 15 A at 120 V by BLUETTI’s store page.
Beside the inlet: a grounding screw and a reset button printed Circuit Protector 20A. BLUETTI’s pictures show no ports on the other side and don’t show the back. No battery port: the Elite 300 doesn’t take extra batteries.
Photo: BLUETTI · Product image, BLUETTI store · numbers and labels are ours. Port name printed on BLUETTI’s panel; the rating from BLUETTI’s US store page.
Strengths & trade-offs
EcoFlow DELTA 3800 Gen4
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$1,000) than the Elite 300.
BLUETTI Elite 300
Strengths
- +Costs $1,000 less
- +Lighter by 9.5 lb
Trade-offs
- –Weaker inverter (-1,200W) limits appliance compatibility.
- –Sealed capacity — the DELTA 3800 Gen4 can add batteries to grow past 3,014.4Wh; this one can't.
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 cover the 2,100 Wh weekend. The DELTA 4 (3800) finishes with 1,099 Wh in hand against 462 Wh, for 9.5 lb more to carry.
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 finish the night. The DELTA 4 (3800) ends with 94% of a second night left, the Elite 300 with 56%. If your outages run to two nights, that gap is the one to weigh.
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. What would separate them is fan noise, but Elite 300 doesn't publish a figure, so there's nothing to hold it to. Buy on price, weight, and whether you can live with a fan you haven't heard.
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
Both run the 670 Wh tailgate with most of the battery left. The Elite 300 is the lighter one to carry from the car.
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 on its own battery: the DELTA 4 (3800) falls 1,486 Wh short and the Elite 300 2,123 Wh short. Only the DELTA 4 can take an extra battery to close the gap.
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 12.5h.
$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 BLUETTI Elite 300
I'd buy the Elite 300, unless you already know 3,014 Wh won't be enough. At $1,199 against $2,199, it costs far less per watt-hour, weighs 58 lb to 67.5 lb, and carries the same 6,000-cycle ratingA9B1. The DELTA 4 (3800) answers with a quarter more battery, 3,600 W against 2,400 W, 2,000 W of solar against 1,200 W, and an extra-battery port that EcoFlow says reaches 4 to 12 kWhA6. That port is the one thing you can't add to the Elite later. If you're buying the first piece of a bigger system, it's worth $1,000. If you're buying a night of backup, it isn't.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of November 4, 2026. The links below open EcoFlow's and BLUETTI's current prices.
$1,199.00 · direct from BLUETTI
Last checked 31 days ago. Prices move — check before you buy.
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 3800 Gen4 rates 4.1/5 (48th percentile of 22 Home Backup-class units), and Elite 300 rates 4.6/5 (75th percentile of 29 Large-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 4 (3800): 67.5 lb on Two Handles
It carries by a handle at each end, and EcoFlow sells a folding cart separately. The Elite 300 is 9.5 lb lighter and holds less battery.
The Elite 300 Is Sealed at 3,014 Wh
There's no expansion port. If 3,014 Wh covers you, nothing is lost. If it won't, the DELTA 4 (3800) takes EcoFlow's extra batteries and grows from there.
Elite 300: Power Lifting to 4,800W
The Elite 300 has BLUETTI's Power Lifting mode, which runs a resistive appliance rated up to 4,800W from its 2,400W inverter. It does that by delivering less power than the appliance asks for, not more than the inverter has: the heater still works, it just heats more slowly. Two things follow. BLUETTI scopes the mode to purely resistive loads — a heater, a kettle, an incandescent lamp — so it does nothing for a fridge compressor, a pump or a power tool; for motor loads the figure to read is the Elite 300's separate 4,800W surge peak, not this one. And it is not a reason to size down, because running a load that big from 3,014Wh is a short session either way. Genuinely useful if a heater or a kettle is why you're buying; beside the point otherwise. EcoFlow's X-Boost works the same way, running a resistive load past the inverter's rating at reduced power, but our record for the DELTA 3800 Gen4 carries no X-Boost figure, so check EcoFlow's spec sheet before comparing the two ceilings.
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: EcoFlow's depends on registering the unit in the EcoFlow app, which adds two years to a three-year standard term; BLUETTI's on buying direct from BLUETTI or registering the unit, since reseller purchases carry a shorter term. Worth saying because the per-dollar framing can suggest otherwise: the Elite 300 works out at 4.2 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.
Elite 300: Noise Level Not Disclosed
The DELTA 3800 Gen4 publishes its noise level (40dB); the Elite 300 doesn't publish one. That isn't evidence the Elite 300 is louder — it means there's no figure to hold it to, and no way to compare the two on this without hearing them. If you're buying for a bedroom, a CPAP, or an apartment, treat the DELTA 3800 Gen4's 40dB as the only published number on the table — a spec-sheet figure, not a measurement — and look for hands-on reports of the Elite 300 before deciding.
Full record above — the Test Desk pick is the Elite 300.
Check Elite 300 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
The Elite 300 wins on both sticker price and long-term value. At $0.07/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner. 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.
Brand trust
EcoFlow
Ecosystem
Largest in portable power — 12-15 models across DELTA Pro, DELTA 3, and RIVER 3 series, plus solar panels and smart home panels
Support
US-based phone/email/chat support (1-800-368-8604). Experiences are polarized — many report hassle-free prepaid-label replacements, but others report long waits and refurbished units sent for new claims. Pro tip: buying from Costco or Amazon gives you a stronger return safety net.
Community
Largest community in the space — Reddit r/Ecoflow_community (~31K members), multiple Facebook groups, and an official community forum
App experience
Rated 4.6/5 iOS (~8,400 ratings) · 4.2/5 Android (~17,000 ratings)
Unique strength
Fastest-charging technology (X-Stream), deepest product ecosystem, and most active innovation cadence. At the top of the range sit two whole-home paths: the TITAN line, one 5 kWh unit that grows to 30 kWh, and the DELTA Pro Ultra platform, which stacks batteries and inverters further — flagship paths, not line-wide features.
Worth knowing
Tested subscription paywalls for advanced app features in early 2025 before community backlash paused the plan. No parts or service offered out of warranty.
BLUETTI
Ecosystem
One of the broadest lineups — 15-20+ models from budget (AC2A) to flagship portable (Apex 300, 2764.8Wh). Includes specialized products: vehicle solar hubs, sodium-ion cold-weather units, and balcony storage systems.
Support
The most inconsistent support in the space. Heavily email-based with China timezone delays. Some users get smooth, efficient service; others report weeks of troubleshooting runarounds, being offered discounts on new units instead of repairs, and confusing third-party purchase claim processes. Buying direct from Bluetti's website tends to produce better support outcomes.
Community
Active and growing — Reddit r/bluetti has a dedicated community. Second-largest after EcoFlow in engagement.
App experience
Rated 4.5/5 iOS and Android — tied for best app experience in the category. V3.0 UI redesign was well-received.
Unique strength
Among the best capacity-to-price ratios available — several Elite and Apex units are the lowest $/Wh in the catalog. Widest product diversity including industry-firsts like sodium-ion cold-weather units and dual solar+alternator vehicle hubs. LFP across the rest of the range, though rated cycle life spans 2,500 (EB3A) to 6,000, and it varies WITHIN the Elite range rather than tracking it — the Elite 300 and Elite 200 V2 are rated 6,000 while the Elite 30 V2, Elite 10 Mini, Elite 320 and Elite 400 are rated 3,000+ and the Elite 100 V2 4,000+, so check the specific model. Dual-voltage (120V/240V) in flagships.
Worth knowing
Customer support inconsistency is the #1 risk factor. Older/discontinued units may become unrepairable — no spare parts policy for some models. Some reports of erratic communication from support agents.
Analyst note
EcoFlow positions itself as a mid-to-premium brand with stronger support infrastructure, while BLUETTI competes on value. The question is whether the EcoFlow ecosystem and support premium is worth it for your use case.
Growth path
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.
Elite 300
FIXED CAPACITYFixed at 3,014Wh — 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 1,200W of solar. Enough for a serious multi-panel array.
Adequate ports for most setups, but heavy users may want a power strip.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
The Elite 300 is sealed at 3,014Wh, 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 Elite 300 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 3800 Gen4
Nobody in the US owns a DELTA 4 (3800) yet. EcoFlow put it on sale on November 4 and says it ships in late NovemberA10, so this page leans on EcoFlow's US store and spec sheet, plus our own arithmeticA4A5A6.
I'd want to hang one extra battery off it and run a two-day outage on a fridge and a furnace blower. The port is the reason to buy this unitA6, so I'd want to see the base and the battery hand over without a hiccup, and the app report both honestly, before I'd tell anyone to build on it.
“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
BLUETTI Elite 300
The Elite 300's record comes mostly from reviewers, and it's kind. They agree on the cells, rated for 6,000 cycles to 80%B1, and on the compact case, certified as the smallest 3 kWh unit by volumeB2.
Owner reports are positive and short on years. Reviews from 2026 describe strong results in home backup, RV and off-grid useB4. None of them name a recurring fault, and none are old enough to have found oneB0.
“3,014Wh of premium LiFePO4 rated for 6,000+ cycles to 80% — over 16 years of daily use — the same cell tier used in the Elite 100 V2, Elite 200 V2, and Apex 300.”
Sources
backuppowerhub.com · trustedreviews.com · rv.com · thetechnologyman.com · exspenditure.com · reviewed.com · camerajabber.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 3800 Gen4 · 12 entries]
- 6,000-cycle LFP longevity, a class-leading compact size for 3kWh, and strong real-world performance are the standout praise. [Elite 300 · 3 entries]
- 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-3800-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-3800-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-3800-gen4 (spec table, features and FAQ, read 2026-11-04) · 2026-11-04 · [mixed]
- A5
“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]
- A6
“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]
- A7
“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]
- 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-3800-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 $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]
- B1
“3,014Wh of premium LiFePO4 rated for 6,000+ cycles to 80% — over 16 years of daily use — the same cell tier used in the Elite 100 V2, Elite 200 V2, and Apex 300.”
backuppowerhub.com / trustedreviews.com — Elite 300 review · 2026 · [positive]
- B2
“Certified as the world's smallest 3kWh portable power station by volume (as of January 2026), fitting a chassis closer to a standard 2kWh unit, at just under 58 lbs.”
backuppowerhub.com / rv.com — Elite 300 review · 2026 · [positive]
- B4
“Multiple 2026 owner reviews report strong real-world performance across home backup, RV, and off-grid use.”
reviewed.com / camerajabber.com — Elite 300 owner reviews · 2026 · [positive]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3800 Gen4 if you…
- →You know you'll grow. It takes up to two of EcoFlow's extra batteries, 4 to 12 kWh by EcoFlow's figureA6.
- →You own a lot of solar. Two inputs take 2,000 W against the Elite's 1,200 W.
- →Your outages run past one night. It ends our 8-hour blackout with 94% of a second night left.
- →You run more than 2,400 W at once. Its inverter carries 3,600 W.
Buy the Elite 300 if you…
- →3,014 Wh covers your longest outage. Then nothing the DELTA 4 adds is worth $1,000.
- →You'll carry it often. It's 9.5 lb lighter.
- →You run an RV or a 12 V fridge. It has an RV-style 30 A outlet and a 12 V car socket. The DELTA 4 has no car socketA3.
- →You want the most battery per dollar. It costs far less per watt-hour.
If neither fits
If your load is a CPAP, phones and a few lights, skip both. Our CPAP night uses about a tenth of the DELTA 4 and 12% of the Elite. A much smaller unit does that job at a fraction of the weight.
The Bottom Line
I'd buy the Elite 300. It's cheaper, 9.5 lb lighter, rated for the same 6,000 cycles, and it gets through a night without power with battery to spare.
Pay more for the DELTA 4 (3800) only if you'll grow into it. The extra-battery port is the one thing the Elite can't add later, and for someone building home backup in stages, that's worth the difference.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the EcoFlow DELTA 4 (3800) available in the US?
Yes. EcoFlow put it on sale at its US store on November 4, 2026, and says it ships in late November. The BLUETTI Elite 300 is already on sale.
How much does the DELTA 4 (3800) cost?
EcoFlow lists it at $2,199. The BLUETTI Elite 300 sells for $1,199, $1,000 less, for 3,014 Wh against the DELTA 4's 3,763 Wh.
Can the BLUETTI Elite 300 be expanded?
No. It has no expansion port, so 3,014 Wh is its ceiling. The DELTA 4 (3800) takes up to two EcoFlow extra batteries, for 4 to 12 kWh in all by EcoFlow's figure.
Which one lasts longer?
On paper they match. EcoFlow and BLUETTI both rate these units for 6,000 cycles on LFP cells. Both carry five years of warranty once registered, or for the Elite, when bought direct from BLUETTI.
Which one is lighter?
The Elite 300, at 58 lb against 67.5 lb for the DELTA 4 (3800). The DELTA 4 holds more: 3,763 Wh against 3,014 Wh.
Brand matchup
EcoFlow vs BLUETTI: measured across every matchup →Where to buy
EcoFlow DELTA 3800 Gen4
$2,199.00
$2,199.00 · direct from EcoFlow
BLUETTI Elite 300Pick
$1,199.00
$1,199.00 · direct from BLUETTI
Last checked 31 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.