Head-to-head test
EcoFlow DELTA 3800 Gen4 vs Anker SOLIX S5000A Third More Battery in the S5000. Do You Need to Lift It?
The S5000 holds a third more battery, runs 240 V, grows further and is the cheaper box per watt-hour. I'd buy the Anker, unless the battery has to leave the house with you or EcoFlow extra batteries already sit in your garage.
Full profiles: EcoFlow DELTA 3800 Gen4 → · Anker SOLIX S5000 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Gunner’s take
Whole-Home Backup Tester
Per watt-hour, the S5000 is the cheaper box, and it's also the bigger one.
EcoFlow lists the DELTA 4 (3800) at $2,199, and the S5000 sells for $2,500. The $301 between them buys a third more battery, 5,024 Wh against 3,763 Wh, plus 900 W more output and 240 V outletsB3.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
Each of those extra watt-hours costs well under what a watt-hour inside the DELTA 4 (3800) costs. The 240 V outlet and 900 W of extra output come along on top. Usually the bigger battery is the indulgence. Here it's the bargain.
DELTA 4 (3800): 3,763 Wh for $2,199SOLIX S5000: 5,024 Wh for $2,500SOLIX S5000: 4,500 W with an L14-30R 240 V outlet; DELTA 4 (3800): 3,600 W at 120 VA2B3
Why it mattersUnless weight or a home with no garage rules the S5000 out, the extra money buys more than it costs.
Starting from nothing, that's a home system against a big portable with a spare tank. But if a DELTA Pro 3 or DELTA 3 Max Plus extra battery already sits in your garage, the DELTA 4 (3800) plugs into it through EcoFlow's adapterA6. A battery you already own is the cheapest watt-hour there is.
DELTA 4 (3800): up to two extra batteries, the DELTA Pro 3 or the 2,048 Wh DELTA 3 Max Plus, 4 to 12 kWh by EcoFlow's figureA6SOLIX S5000: up to five BP5000 batteries of 5,024 Wh each, 30,144 Wh in allB6SOLIX S5000 battery port: 9,000 W in, 7,500 W outB6
Why it mattersOwn EcoFlow extra batteries? That tilts back to the DELTA 4 (3800). Starting fresh, the S5000 has more room.
Panels wired end to end add up their open-circuit voltage, the Voc printed on the back of each one. A 60 V limit keeps those strings shortA5. At 165 V the S5000 takes a string the way a small roof array is wiredB5, and plugged into 240 V it charges at 4,500 WB4.
DELTA 4 (3800): two solar inputs, 11 to 60 V, 1,000 W eachA5SOLIX S5000: one 11 to 60 V input at 1,000 W and one 16 to 165 V input at 2,000 WB5SOLIX S5000: 1,800 W from a 120 V outlet, 4,500 W from 240 VB4
Why it mattersIf panels are going on a roof or a ground mount, wire them to the S5000.
The specific dimensions that decide these two units — everything else is a tie.
What the Specs Don't Tell You
Selected because: Only the S5000 has 240 V, and it runs 4,500 W against the DELTA 4 (3800)'s 3,600 W.
The 240 V outlet is the S5000's real advantage, and it's the one I'd wire to. Its L14-30R carries 240 V split-phase at up to 4,500 WB3, which is the twist-lock many home generator inlets are built around. The DELTA 4 (3800)'s own twist-lock is a 30 A outlet at 120 VA2A3. It runs 120 V circuits, and no 240 V ones.
Surge is closer than output. The S5000 peaks at 8,000 W and the DELTA 4 (3800) at 7,200 W, so either starts a fridge or a sump pump. The gap that matters is continuous: 4,500 W against 3,600 W is the difference between a kitchen running all at once and one where the kettle waits for the microwave.
Growth Path
Selected because: Both take extra batteries, and the S5000 takes 3,000 W of solar against 2,000 W.
solar input
Both grow, on very different scales. The DELTA 4 (3800) takes two extra batteries through EcoFlow's expansion adapter, either the DELTA Pro 3 battery or the 2,048 Wh DELTA 3 Max Plus, for 4 to 12 kWh by EcoFlow's figureA6. The S5000 takes five BP5000s for 30,144 WhB6.
I'd plan the EcoFlow around batteries you already own. If one is in the garage, the DELTA 4 (3800) uses itA6. Starting from nothing, the S5000's ceiling is more than twice as high, its port is rated 7,500 W outB6, and it takes 3,000 W of solar to keep that bank full.
Your Life, Your Pick
Selected because: The S5000 takes the blackout and camping rows on reserve; the light jobs are a draw.
Reserve is where the S5000 wins its rows. The eight-hour blackout needs 1,645 Wh. The DELTA 4 (3800) finishes with 1,554 Wh, 94% of a second night. The S5000 finishes with 2,625 Wh, enough for 1.6 more.
The light jobs are a draw, with one tiebreak. A CPAP night, a remote workday and a tailgate fit easily in both. For the workday, the DELTA 4 (3800)'s 140 W USB-C port charges a big laptop directly, against 100 W on the S5000. Van Life Daily's 4,685 Wh beats both on their own batteries, and both can add one.
Portability & Form Factor
Selected because: 67.5 lb with two handles against 97 lb on wheels: 29.5 lb apart.
weight
The EcoFlow is the one that leaves the house. At 67.5 lb with a handle at each endA7, it's a heavy one-person carry to the car for a weekend at the lake. EcoFlow sells a folding cart for it tooA7.
The S5000 rolls to the garage and stays. It's 97 lb on wheels with a pull rod and a foot pedal to tip it backB11. I'd check the garage in January first. The S5000 runs down to -4°F, but like the EcoFlow it won't charge below 32°FB8A9.
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.
Anker SOLIX S5000
Front panel
- 1USB-A · 12 WOutUp to 12 W. It shares 18 W with the 15 W USB-C port when both are in use.
- 2USB-C · 15 WOutPrinted C1: 5 V at 3 A, 15 W. A phone port, not a laptop port.
- 3USB-C · 100 WOutPrinted C2: up to 100 W (20 V at 5 A). The laptop port.
- 44× 20 A outletsOutFour NEMA 5-20R outlets, up to 2,400 W in all. All the outlets share 4,500 W.
- 5L14-30R · 240 VOutA 120/240 V twist-lock, up to 4,500 W: the plug for a transfer switch or a generator inlet box.
- 6TT-30R · 120 VOutA TT-30R RV outlet, up to 3,600 W at 120 V. The plug on a camper’s 30 A shore-power cord.
Also on the panel: a RESET hole under the USB ports, the main power button under the screen, and the 120V AC and 240V AC buttons above the outlets. No 12 V car socket.
Photo: Anker · Product image, Anker SOLIX store · numbers and labels are ours. USB ratings printed on Anker’s panel and in Anker’s S5000 spec table; outlet names and ratings from Anker’s S5000 page and store FAQ (ankersolix.com/s5000).
Rear panel
- 1Battery & generator portIn · OutAnker’s DC input and expansion battery port, under the cover marked with a battery and GEN. An Anker generator charges through it at up to 4,500 W.
- 2High-PV in · 2,000 WInUnder the PV PORT cover: 16 to 165 V at up to 17 A, 2,000 W.
- 3Low-PV/car in · 1,000 WInUnder the PV PORT cover: 11 to 60 V at up to 17 A, 1,000 W. Also the car-charging input. With the high-voltage input, 3,000 W of solar in all.
- 4AC in · 4,500 WInThe AC charging inlet: up to 1,800 W from a 120 V socket, or 4,500 W at 240 V.
The middle cover is unmarked in Anker’s picture and not named in its diagram.
Photo: Anker · Product image, Anker SOLIX S5000 page (Anker’s callout lines removed) · numbers and labels are ours. Port names from Anker’s numbered S5000 diagram; ratings from Anker’s S5000 spec table (ankersolix.com/s5000).
Strengths & trade-offs
EcoFlow DELTA 3800 Gen4
Strengths
- +Costs $301 less
- +Lighter by 29.5 lb
Trade-offs
- –Weaker inverter (-900W) limits appliance compatibility.
Anker SOLIX S5000
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+29.5 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
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
SOLIX S5000
The DELTA 3800 Gen4 finishes the weekend at 66% used with 1,099Wh in hand — one cold night or an extra device eats into that. The SOLIX S5000 finishes at 49% with 2,170Wh, real slack for the spontaneous stuff. If you camp in variable weather, that buffer is the difference between relaxing and watching the battery app.
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
SOLIX S5000
Both get through the 1,645 Wh night. The S5000 keeps 2,625 Wh for tomorrow. The DELTA 4 (3800) keeps 1,554 Wh, just short of a second night.
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. The only published difference is fan noise, and it can't settle this: the SOLIX S5000 is rated 30dB and the DELTA 3800 Gen4 40dB, but the SOLIX S5000's is its maker's best case and the DELTA 3800 Gen4's is EcoFlow's maximum under heavy charge and discharge, so at a 40W draw the real gap can only be narrower than it looks, and may even run the other way. Neither settles which box is quieter at a bedside. 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
A 910 Wh day fits easily in either, so this one is a draw. The tiebreak is the laptop cable: 140 W of USB-C on the DELTA 4 (3800) against 100 W on the S5000.
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 handle game day easily. Since capacity isn't the deciding factor, weight is: at 67.5 lbs the DELTA 3800 Gen4 is the one you'll be glad you brought. Fan noise under load is worth a listen too — it's audible in the lulls between songs.
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. Both take extra batteries, so this is an expansion question rather than a pick.
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: SOLIX S5000 runs 20.8h vs 15.6h.
$2,499.99 list · direct from Anker
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 0–284.7hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–56.9hHigh-Draw Appliances
These reveal the real limitsscale 0–4.3h¹ 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 SOLIX S5000, on Power Score margin
I'd buy the S5000, unless the battery has to travel. For $301 more it holds 1,261 Wh more, runs 4,500 W with 240 V outlets, takes 3,000 W of solar against 2,000 W, and grows to 30,144 WhB6 against EcoFlow's quoted 4 to 12 kWhA6. That makes it the cheaper battery per watt-hour, and it's on sale now while the DELTA 4 (3800) ships in late NovemberB20A10. What would flip it is Anker taking the S5000 back up to its list priceB20, or a buyer who has to carry the thing or already owns EcoFlow extra batteries.
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 Anker's current prices.
$2,499.99 · direct from Anker
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
Not rated for both units (minimum threshold unmet): UPS, RV Living, 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 3800 Gen4 rates 4.1/5 (48th percentile of 22 Home Backup-class units), and SOLIX S5000 rates 4.6/5 (76th 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.
Carry One, Roll the Other
The DELTA 4 (3800) is 67.5 lb with a handle at each end, 29.5 lb lighter than the SOLIX S5000. The S5000 rolls on wheels with a pull rod, which is easy across a garage floor and a two-person job up a step.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The DELTA 3800 Gen4's figure is a maximum rather than a guarantee — it depends on registering the unit in the EcoFlow app, which adds two years to a three-year standard term.
Full record above — the Test Desk pick is the SOLIX S5000.
Check SOLIX S5000 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 DELTA 3800 Gen4 is cheaper to buy, but the SOLIX S5000 is cheaper to own. At $0.08/kWh over its lifetime vs $0.10/kWh, the SOLIX S5000's higher cycle life and capacity make each dollar go further over the years. 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.
Anker
Ecosystem
7-8 SOLIX portable power stations across C-series (compact) and F-series (flagship), plus the X1 home energy system
Support
US-based support. Historically known for incredible no-hassle replacements, but recent reports describe AI-driven support agents giving generic responses and complex return logistics for heavy units (hazmat shipping). The Anker brand reputation is still strong, but SOLIX-specific support quality is trending down.
Community
Moderate — active Reddit (r/Anker, r/AnkerSOLIXCommunity) and growing. Benefits from Anker's massive consumer electronics brand awareness.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
Parent brand trust from Anker's consumer electronics dominance. InfiniPower technology for long cycle life. Strong $/Wh value in the mid-size and larger units — the S2000, F2600 and C1000 are among the better buys per watt-hour in the catalog.
Worth knowing
Support quality appears to be declining from its historically excellent level. Firmware updates have removed features without warning. Expansion ecosystem is smaller than EcoFlow's.
Analyst note
EcoFlow positions itself as a mid-to-premium brand with stronger support infrastructure, while Anker 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.
SOLIX S5000
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 5,024Wh.
Accepts up to 3,000W 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 Anker-specific. You're investing in the Anker ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the SOLIX S5000's higher solar ceiling (3,000W vs 2,000W) gives it the stronger off-grid growth path — more panels can feed a bigger bank as it grows.
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 ships it in late NovemberA10, so this page leans on EcoFlow's US store listing and our own arithmeticA1A6.
I'd want to pull the main breaker on it. With a router and a chest freezer plugged in, I'd cut the grid and watch whether either one notices. EcoFlow promises a switchover within 10 msA8, and I'd want to see the freezer's compressor restart on battery without a stumble.
“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
Anker SOLIX S5000
The S5000 is barely older. Anker opened sales on October 27B20, and every entry we have is Anker's own documentationB0.
One Anker number matters for a box that sits on standby. By Anker's internal testing it idles at 8.8 W on 120 V output and 13.7 W on 240 VB16. Left on around the clock, that's a small, steady drain a panel or the grid has to cover. Anker also quotes 6,000 cycles to 80%B12, the same count EcoFlow gives the DELTA 4 (3800)A9.
“5,024 Wh LiFePO4 pack rated 16 V, 314 Ah; the cell code IFpP72/175/208[5S] reads as five large prismatic cells in series.”
Sources
ankersolix.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]
- No owner or reviewer reports exist yet: every entry is Anker documentation (rating label, product page, launch announcement), plus one of our own readings of the app and label drawing. [SOLIX S5000 · 20 entries]
- A1
“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]
- 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]
- 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]
- A8
“Switches to backup within 10 ms when the grid drops; EcoFlow's FAQ says it does not support HID communication. Noise by EcoFlow's figures: 40 dB or less at up to 1,800 W, 50 dB or less at the full 3,600 W. IP20.”
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]
- B3
“Outlets: one L14-30R carrying 240 V split-phase at up to 4,500 W; one TT-30R RV outlet at 120 V, 30 A, 3,600 W; NEMA 5-20R household outlets at 120 V, 20 A, 2,400 W; USB-C 100 W, USB-C 15 W and USB-A 12 W.”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [positive]
- B4
“AC charging up to 1,800 W from a 120 V outlet (15 A for under three hours, 12 A continuous), or up to 4,500 W from 240 V. The same AC port runs bypass mode, passing wall power through to the outlets.”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [positive]
- B5
“Two solar inputs, 3,000 W together: 11–60 V at 17 A (1,000 W) and 16–165 V at 17 A (2,000 W).”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [positive]
- B6
“Expands with up to five BP5000 expansion batteries (model AS5101A1-85), each 5,024 Wh, for 30,144 Wh in total. They join through a 400 V DC port rated 9,000 W in and 7,500 W out; each battery charges at up to 3,200 W and discharges at up to 3,000 W.”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [positive]
- B7
“Rated for residential non-habitable spaces; holding more than 1 kWh, it belongs outside sleeping rooms and other living spaces.”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [mixed]
- B8
“Charges at 0–40 °C (32–104 °F); runs at −20–40 °C (−4–104 °F).”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [mixed]
- B11
“Net weight 97 lb; 10.6 × 22.0 × 15.2 in (W × D × H), on wheels with a pull rod and foot pedal.”
Anker SOLIX S5000 product page, ankersolix.com/s5000 (published 2026-10-09) · 2026-10-09 · [positive]
- B12
“Cycle life: 6,000 cycles to 80% capacity, 10,000 cycles to 60%; Anker estimates a 15-year lifespan at 1 to 2 cycles a day, with 5 years of product coverage.”
Anker SOLIX S5000 product page, ankersolix.com/s5000 (published 2026-10-09) · 2026-10-09 · [positive]
- B15
“Front panel: four NEMA 5-20R outlets at 120 V, one L14-30R and one TT-30R, plus USB-A 12 W, USB-C 15 W and USB-C 100 W. No 12 V car outlet is listed.”
Anker SOLIX S5000 product page, ankersolix.com/s5000 (published 2026-10-09) · 2026-10-09 · [neutral]
- B16
“Idle draw 8.8 W on 120 V output and 13.7 W on 240 V output (Anker internal testing).”
Anker SOLIX S5000 product page, ankersolix.com/s5000 (published 2026-10-09) · 2026-10-09 · [positive]
- B20
“Launch price $2,499.99 against an MSRP of $3,599.99; on sale October 27, 2026 at AnkerSOLIX.com and Amazon.”
Anker launch announcement, 2026-10-09 (EIN Presswire) · 2026-10-09 · [neutral]
Research compiled November 4, 2026.
Who Should Buy Which
Buy the DELTA 3800 Gen4 if you…
- →It has to travel. 67.5 lb with two handles, 29.5 lb lighter than the S5000.
- →You already own EcoFlow extra batteries. It takes the DELTA Pro 3 and DELTA 3 Max Plus batteriesA6.
- →There's no garage to give a cabinet. Anker rates the S5000 for spaces outside living areasB7.
- →A big laptop is the daily load. Its 140 W USB-C port beats the S5000's 100 W.
Buy the SOLIX S5000 if you…
- →Something in the house runs on 240 V, like a well pump or a subpanel on a transfer switch.
- →Panels are going on a roof or a ground mount. Its 16 to 165 V input takes a long stringB5.
- →You'll keep adding batteries. Up to five more, 30,144 Wh in allB6.
- →You want it now. It's on sale todayB20, and the DELTA 4 (3800) ships in late NovemberA10.
If neither fits
If it's for a laptop and a lamp in an apartment, both are far more than you need. The remote workday uses 910 Wh, about a quarter of the DELTA 4 (3800). A much smaller station does that job.
The Bottom Line
Unless the battery has to travel, I'd buy the S5000. It's the cheaper battery per watt-hour, a third bigger, with 240 V and room to grow, and it's on sale nowB20.
If it rides in the car, or EcoFlow extra batteries already sit in your garage, buy the DELTA 4 (3800). It's 29.5 lb lighter, and it plugs into what you ownA6.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
How much does the DELTA 4 (3800) cost in the US?
EcoFlow lists it at $2,199 on its US store. It went on sale on November 4, 2026, and EcoFlow says it ships in late November. The Anker SOLIX S5000 sells for $2,500.
Does the Anker SOLIX S5000 have 240 V outlets?
Yes. Its L14-30R outlet carries 240 V split-phase power at up to 4,500 W, beside an RV outlet and four 120 V household outlets. The DELTA 4 (3800) has 120 V outlets only.
Can both of them add extra batteries?
Yes. The DELTA 4 (3800) takes up to two EcoFlow extra batteries, the DELTA Pro 3 or DELTA 3 Max Plus kind, for 4 to 12 kWh by EcoFlow's figure. The SOLIX S5000 takes up to five BP5000 batteries for 30,144 Wh.
Which one is easier to move?
The DELTA 4 (3800), at 67.5 lb with a handle at each end. The SOLIX S5000 weighs 97 lb and rolls on wheels with a pull rod, which suits a flat floor better than stairs.
Which one charges faster from solar?
The SOLIX S5000. It takes 3,000 W across two inputs, one of them rated up to 165 V. The DELTA 4 (3800) takes 2,000 W across two inputs at 11 to 60 V.
Where to buy
EcoFlow DELTA 3800 Gen4
$2,199.00
$2,199.00 · direct from EcoFlow
Anker SOLIX S5000Pick
$2,499.99
$2,499.99 · direct from Anker
Prices may vary by retailer and are subject to change.