Head-to-head test
Anker SOLIX S5000 vs Goal Zero Yeti PRO 4000
The S5000 beats the Yeti PRO 4000 on capacity, output, cycles, weight and price; what the Yeti still sells is a reviewed track record the Anker hasn't had time to earn.
Full profiles: Anker SOLIX S5000 → · Goal Zero Yeti PRO 4000 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
The Anker SOLIX S5000 wins this on paper: 1,030Wh more capacity than the Goal Zero Yeti PRO 4000, 900W more continuous output, 18.7 lb less to move, and $1,500 less to buy. Both take 3,000W of solar, both carry 5 years of warranty and both list a UPS mode, so this one is fought on finer lines.
The finer lines still go to the S5000. Its L14-30R outlet supplies 240V split-phase at up to 4,500WA2, which the Yeti's record doesn't offer; its 8,000W peak clears the Yeti's 7,200W; and Anker rates its pack for 6,000 cycles to the Yeti's 4,000A12. Divide price by rated lifetime energy and you pay $0.08 per kWh for the S5000, $0.25 for the Yeti.
What the Yeti has is history. Reviewers credit it with an unusually durable build, a good app and US-based supportB1, and its solar input has been shown filling it from 0 to 100% in under 2 hoursB2. It isn't spotless: owner reports include 12V faultsB3. The S5000's numbers, meanwhile, are all Anker's own, which is why this win comes with an asterisk.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
cost / lifetime kWh
Both are long-lived batteries, so this isn't a disposable-versus-durable story. The cheaper unit simply carries more energy per cycle and more cycles, so each kWh costs about a third as much ($0.08 / $0.25).
S5000: 5,024Wh, rated 6,000 cyclesA12Yeti PRO 4000: 3,994Wh, rated 4,000 cyclesCost per lifetime kWh: $0.08 vs $0.25
Why it mattersAnyone running this as a daily solar battery gets roughly twice the lifetime work from the S5000 for less money.
continuous output
That turns the S5000 into something the Yeti's record says it isn't on its own: a feed for a dual-voltage well pump or a transfer-switch inlet. The 900W output lead matters less than this; a 240V pump doesn't care how many 120V watts you have.
S5000 L14-30R: 120/240V split-phase, 4,500W, 18.75AA2A3Yeti PRO 4000: 3,600W output, no 240V outlet on our recordA 30A circuit carries 7,200W at 240V
Why it mattersHomes on a well, or anyone planning a transfer switch, should treat this as the deciding spec.
weight
Normally weight buys watt-hours. Here the Yeti's extra 18.7 lb arrives with less energy, and the durable build reviewers praiseB1 is the likeliest place it went. The S5000 tips onto its wheels with a foot on the step; the Yeti is a two-person job by reviewers' accountB1.
Yeti PRO 4000: 115.7 lb, a two-person unitB1S5000: 97 lb on wheels with a pull rod and a tip-back stepA10A11S5000 holds 1,030Wh more
Why it mattersIf one person will be moving this between garage and driveway, the S5000 is the one they can manage.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: Both batteries are long-lived; the S5000 still delivers each kWh for about a third of the cost.
cost / lifetime kWh
$0.25 per kWh is a respectable number for the Yeti; plenty of stations would be glad of it. The S5000 just makes it look dear at $0.08, because it brings both more capacity per cycle and 2,000 more rated cycles.
Read the years with care: at daily use the Yeti's rating runs about 11 years and the S5000's about 16.4. Either outlasts most people's plans for it. The money gap is the part you feel on day one.
Brand Trust
Selected because: The Yeti has a reviewed record; the S5000's case rests on Anker's documentation.
This is the Yeti's ground. Reviewers single out its build and its US supportB1, and its solar charging has been shown filling it in under 2 hoursB2. The S5000 has a rating label and a product pageA0, and that's the whole file.
Neither badge buys certainty. Goal Zero's support has slipped from its premium standing, with long ticket waits, and owner reports of 12V faults on this model existB3. Anker's support on heavy SOLIX units has drifted toward generic responses and hazmat-freight returns. One of them just has more miles on the clock.
Portability & Form Factor
Selected because: Neither is light, and here the lighter one also holds more.
weight
115.7 lb is a two-person lift by any honest measure, and reviewers say so outrightB1. The S5000's 97 lb isn't light either, but Anker built it as an upright cabinet with wheels, a pull rod and a step for tipping it backA10A11.
The trade runs the wrong way for the Yeti. The heavier unit is the smaller battery, so if your setup involves a ramp, a driveway or a single pair of hands, the Anker costs you nothing to choose.
What the Specs Don't Tell You
Selected because: Both list UPS modes and 5-year terms, so the differences are in the fine print.
rated cycles
Both list a UPS mode: the S5000 at no more than 10msA13, the Yeti at no more than 15ms. Those are ceilings, not measurements; a router won't notice, a fussy desktop power supply might, which tilts it slightly to the Anker.
Warranty is a wash at 5 years each. Noise isn't comparable: Anker quotes 30dB in quiet operationA13 and Goal Zero quotes nothing, so a bedroom buyer has one maker's best-case figure and silence from the other.
Strengths & trade-offs
Anker SOLIX S5000
Strengths
- +Costs $1,500 less
- +Lighter by 18.7 lb
- +Larger battery capacity
- +Higher AC output
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
Goal Zero Yeti PRO 4000
Strengths
- Solid all-rounder with standard specs.
Trade-offs
- –Substantially more expensive (+$1,500) than the SOLIX S5000.
- –Significantly heavier (+18.7 lbs), making it harder to move.
- –Weaker inverter (-900W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
- –Shorter-lived battery — rated for 4,000 charge cycles vs the SOLIX S5000's 6,000, so it wears out sooner.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on six real-world scenarios. Here's which unit survives your actual life.
SCN-01 · 2 nights · needs 2,100Wh
Weekend Camping
Two nights off-grid with essential comfort
SOLIX S5000
The Yeti PRO 4000 at 115.7 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the SOLIX S5000 by default — and it earns it, covering the 2,100Wh with 2,170Wh to spare. Capacity was never the Yeti PRO 4000's problem here; getting to a campsite was.
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
Either unit
Both survive the blackout with similar margin, and both list a UPS mode — compare their stated switchover classes, and remember those are manufacturer ratings, not measurements.
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 cover the night with room to spare and capacity decides nothing. Fan noise would — but Yeti PRO 4000 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
SOLIX S5000
The Yeti PRO 4000 at 115.7 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the SOLIX S5000 by default — and it earns it, covering the 670Wh with 3,600Wh to spare. Capacity was never the Yeti PRO 4000's problem here; getting to a tailgate was.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Neither unit
Neither unit covers this scenario's 4,685Wh: the SOLIX S5000 comes up 415Wh short (about 91% covered) (its nameplate 5,024Wh actually clears this — the flat 15% conversion allowance is what tips it under), the Yeti PRO 4000 1,290Wh (72%). Either gets you most of the way, so this is a scenario you plan around rather than one you should rule them out for.
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 16.6h.
$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
October 9, 2026
Verdict: the SOLIX S5000
The S5000 costs $1,500 less and still leads on capacity, continuous output, surge, cycle rating, weight and 240V capability, which puts each lifetime kWh at $0.08 against $0.25. The Yeti's real advantage is evidence: a build and support record reviewers have already vouched forB1, against the S5000's documentation-only file. That missing proof holds confidence to 6. It doesn't change the pick.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of October 9, 2026. The links below open Anker's and Goal Zero's current prices.
$2,499.99 · direct from Anker
or check the Yeti PRO 4000 price$3,999.95 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated October 9, 2026
Black Friday · 45 days out
Price to beat:Yeti PRO 4000 $4,000
We have never seen it discounted, so any real cut would be a first.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): RV Living.
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, SOLIX S5000 rates 4.6/5 (74th percentile of 20 Home Backup-class units), and Yeti PRO 4000 rates 3.6/5 (16th percentile of 20 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.
Weight Reality Check
Neither unit is grab-and-go. The SOLIX S5000 (97 lbs) is manageable solo but heavier than a large checked suitcase. The Yeti PRO 4000 (115.7 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 19 lb difference.
UPS Switchover: ≤10ms vs ≤15ms
Both list a UPS mode, at different rated speeds. The SOLIX S5000 is rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. The Yeti PRO 4000 is rated ≤15ms — fine on paper for routers and most electronics; the fussiest PC power supplies sit right at this line. If a computer with unsaved work is the thing being protected, the stated class is worth the attention; nothing here is a lab result.
Warranty: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. Worth saying because the per-dollar framing can suggest otherwise: the SOLIX S5000 works out at 2 years of cover per $1,000 spent against the Yeti PRO 4000's 1.3, but that spread is the price gap, not the terms.
Battery Lifespan in Real Years
The SOLIX S5000 is rated for 6,000 cycles vs 4,000. In real life: at daily use, that's 16.4 vs 11 years. At weekend use (twice a week), it's 58 vs 38 years. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Yeti PRO 4000: Noise Level Not Disclosed
The SOLIX S5000 publishes its noise level (30dB); the Yeti PRO 4000 doesn't publish one. That isn't evidence the Yeti PRO 4000 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 SOLIX S5000's 30dB as the only published number on the table — a spec-sheet figure, not a measurement — and look for hands-on reports of the Yeti PRO 4000 before deciding.
Full record above — the Test Desk pick is the SOLIX S5000.
Check SOLIX S5000 price →or check the Yeti PRO 4000 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 SOLIX S5000 wins on both sticker price and long-term value. At $0.08/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
Delivers each lifetime kWh for $0.17 less — check the SOLIX S5000 price →
Brand trust
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
Anker puts LiFePO4 rated for 6,000 cycles and a 240V L14-30R outlet into a single wheeled cabinet.
Worth knowing
No one outside Anker has published a test of the S5000. Anker's firmware history includes features removed without warning, which is worth remembering on a unit you'll manage through an app.
Goal Zero
Ecosystem
Focused — a compact current line (6th-gen Yeti and Yeti Pro series), the previous-gen X series now out of stock across every model on Goal Zero's own store (checked 2026-09-13: 200X, 500X, 1000X, 1500X, 3000X, 6000X, some listed only as open-box), so buying one new means finding retailer stock, Sherpa power banks for the under-100Wh tier, plus Alta coolers, Nomad/Ranger solar panels, and vehicle integration kits
Support
US-based company (Salt Lake City, owned by NRG Energy). Historically considered premium support, but 2025-2026 reports describe long wait times, unresponsive email communication, and tickets going unaddressed for weeks. The "premium support justifies premium pricing" argument is weakening.
Community
Small but loyal — strong following in overlanding and preparedness communities. Official community forums were recently shuttered, frustrating long-time users.
App experience
Rated 4.4/5 iOS (~1,200 ratings) but recent reviews skew negative — recurring connectivity issues, crashes, and stability problems.
Unique strength
Pioneer of the portable power market — strongest brand heritage. US-based company with ruggedized, weather-resistant designs (IP ratings vary by model). Integrated "Yeti-Ready" ecosystem with coolers, lights, and vehicle kits.
Worth knowing
Typically the priciest brand per watt-hour — though individual pairings vary, and on some pages the Yeti is the cheaper energy. Support quality has declined from its "premium" standard. Perceived as competitively stagnant vs. faster-innovating Chinese competitors. Reliability reports on newer models are concerning.
Analyst note
Both brands back these units for 5 years. Goal Zero's edge is that the PRO 4000 has a reviewed track record; Anker's is that the S5000 offers more of nearly everything else on the spec sheet.
Growth path
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.
Yeti PRO 4000
EXPANDABLESupports Goal Zero expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,994Wh.
Accepts up to 3,000W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
Expansion batteries are Goal Zero-specific. You're investing in the Goal Zero ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, so neither locks you out of growth — decide on capacity, price, and the rest, not the expansion checkbox.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
Anker SOLIX S5000
There's no independent S5000 data yet; Anker's documents are the whole file. The label lists a 5,024Wh LiFePO4 pack and 240V split-phase outputA1A2, the product page claims 6,000 cycles to 80% and UL 9540 and 9540A certificationA12A19, and Anker's own testing puts idle draw at 8.8W on 120VA16.
“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
Goal Zero Yeti PRO 4000
Reviewers rate the PRO 4000's build and support highly and speak well of the appB1, and its 3,000W solar input has been shown filling it in under 2 hoursB2. The counterweight is owner reports of 12V errors, including a replacement unit that then wouldn't charge from solarB3. That's a single source, so treat it as a flag to watch rather than a pattern.
“Weighs about 115.7 lbs — a two-person unit to move — with one of the most durable builds reviewers have seen, backed by American-based support and a great app.”
Sources
bestgeneratorsolar.com · thesolarlab.com · goalzero.com · business.walmart.co · techradar.com · cleantechnica.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
- 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]
- Strong solar input, a great app, American-based support, and a durable build are the praise; heavy weight and some owner reliability reports (12V errors) are the caveats. [Yeti PRO 4000 · 3 entries]
- A1
“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.”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [positive]
- A2
“AC output 4,500 W max, either at 120 V (37.5 A across the outlets) or at 120/240 V split-phase (18.75 A).”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [positive]
- A3
“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]
- A7
“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]
- A10
“An upright cabinet with a handle on top, a full-width front panel with a display, and wheels at the base; the label drawing of the back adds a foot step marked STEP ON for tipping it back onto its wheels.”
Power Station Arena, read from the S5000 card in the Anker app and the label drawing, 2026-09-20 · 2026-09-15 · [positive]
- A11
“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]
- A12
“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]
- A13
“UPS switchover ≤10 ms; Anker quotes 30 dB in quiet operation.”
Anker SOLIX S5000 product page, ankersolix.com/s5000 (published 2026-10-09) · 2026-10-09 · [positive]
- A16
“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]
- A19
“UL 9540 and UL 9540A certified.”
Anker SOLIX S5000 product page, ankersolix.com/s5000 (published 2026-10-09) · 2026-10-09 · [positive]
- B1
“Weighs about 115.7 lbs — a two-person unit to move — with one of the most durable builds reviewers have seen, backed by American-based support and a great app.”
bestgeneratorsolar.com / thesolarlab.com — Yeti PRO 4000 review · 2026 · [mixed]
- B2
“3,000W solar input recharges 0-100% in under 2 hours off-grid, with impressive surge and idle efficiency; fully expandable.”
goalzero.com / thesolarlab.com — Yeti PRO 4000 review · 2026 · [positive]
- B3
“Owner reliability is mixed — some report 12V errors, including a first unit returned or replaced and a second that had a 12V error and would not charge from solar.”
business.walmart.com reviews / oliver owner forums — Yeti PRO 4000 · 2026 · [negative]
Research compiled October 9, 2026.
Who Should Buy Which
Buy the SOLIX S5000 if you…
- →The homeowner on a well who needs 240V for the pump and wants the bigger battery behind it.
- →The solar self-consumer who'll cycle daily and wants the lower cost per kWh across the battery's life.
- →Anyone moving the unit alone between garage and driveway, where 18.7 lb less and a tip-back step make the difference.
Buy the Yeti PRO 4000 if you…
- →The buyer who'd rather pay more for a reviewed build and a track record than be early on a unit nobody has tested independently.
- →Someone who wants more USB ports (3 USB-C and 3 USB-A against 2 and 1) and a 12V car socket, which the S5000 lacks.
If neither fits
If the plan is a tent and a cooler, neither belongs in your trunk. Buy a carry-handle station half this size and spend the difference on panels.
The Bottom Line
The S5000 takes this on capacity, output, 240V, cycles, weight and price; the Yeti PRO 4000 answers with a build and support record reviewers have already vouched forB1. On the spec sheet it isn't a fair fight.
The spec sheet is all we have for the Anker, and that's the only reason to hesitate. Unless being first on an untested unit is the one thing you won't do, buy the S5000.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Anker SOLIX S5000 or Goal Zero Yeti PRO 4000: which should I buy?
The S5000, on the record we have. It holds 5,024Wh to 3,994Wh, outputs 4,500W to 3,600W, adds a 240V outlet, is rated for 6,000 cycles to 4,000, weighs 97 lb to 115.7 and costs $1,500 less. The Yeti's advantage is a reviewed track record, which the S5000 doesn't have yet.
Is the Yeti PRO 4000 reliable?
Reviewers praise its build as unusually durable, but there are owner reports of 12V errors, including a unit that wouldn't charge from solar. It's one source, so it's worth watching rather than disqualifying.
Can either one power a 240V well pump?
The S5000 can: its L14-30R gives 120/240V split-phase at up to 4,500W. Our record for the Yeti PRO 4000 lists no 240V output, so on its own it can't.
Which is quieter, the S5000 or the Yeti PRO 4000?
The spec sheets can't settle it. Anker quotes 30dB in quiet operation for the S5000, a best-case figure, and Goal Zero publishes nothing for the PRO 4000. If it's going near a bedroom, Anker's own label places the S5000 outside sleeping rooms anyway.
Where to buy
Anker SOLIX S5000Pick
$2,499.99
$2,499.99 · direct from Anker
Goal Zero Yeti PRO 4000
$3,999.95
$3,999.95 · direct from Goal Zero
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.