Head-to-head test
Anker SOLIX S5000 vs BLUETTI EP900 + 3×B500
The BLUETTI's real advantage is 9,000 W of continuous output wired straight into a subpanel; if your house never asks for more than the S5000's 4,500 W at once, you'd be paying for headroom you never touch on a system that can't leave the building.
Full profiles: Anker SOLIX S5000 → · BLUETTI EP900 + 3×B500 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Nine thousand watts against forty-five hundred. That continuous rating, not the battery, is what separates the EP900 + 3×B500 from the Anker SOLIX S5000, and it decides whether you can run the dryer while the heater is on.
The BLUETTI is built for that. It's a 466 lb stack wired into a subpanel, holding 14,880 Wh, and once it's in, the whole house carries on as if nothing happened. The S5000 is a 97 lb cabinet on wheels with 5,024 Wh and its own outlets, from four 20 A household sockets up to a 240 V L14-30RA11A15. It can back a house up. It can also go camping.
The extra $11,298 buys the BLUETTI's simultaneity. Whether that's worth it depends on one honest look at your breaker panel.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
That extra headroom only matters if the house draws it. A well pump, a fridge, lights and a furnace fan sit comfortably under 4,500 W; an electric dryer plus a space heater plus an oven does not. The BLUETTI is for the second house.
S5000: 4,500 W continuous, 8,000 W peak, 240 V split-phase at 18.75 A through the L14-30RA2A14EP900 + 3×B500: 9,000 W continuous, hardwired, surge figure unpublishedS5000 TT-30R carries 3,600 W at 120 VA3
Why it mattersAdd up the appliances you'd run together in an outage; if it stays under 4,500 W, the EP900's headline number is headroom you're paying for and not using.
Our record carries no idle figure for the EP900, and the question has come up in the forums without an answerB7. On a long outage, standby draw is a slow leak that the S5000 lets you budget for and the BLUETTI, on our record, doesn't.
S5000 idle draw 8.8 W on 120 V and 13.7 W on 240 V, Anker internal testingA168.8 W × 24 h ≈ 211 Wh a day; 13.7 W × 24 h ≈ 329 Wh a dayOne forum commenter wondered what the EP900 units consume themselvesB7
Why it mattersIf you're sizing for a multi-day outage, count on losing a few hundred Wh a day to standby on either system, and ask BLUETTI for its figure before you buy.
weight
That makes the S5000 the only one of the two that earns its keep when the grid is up: the job site, the tailgate, the cabin weekend. The BLUETTI's value sits idle until the power fails.
S5000: 97 lb on wheels with a pull rod and foot pedalA11EP900 + 3×B500: 466 lb, hardwiredScenarios: S5000 takes Weekend Camping and Tailgate Party; the BLUETTI cannot leave the building
Why it mattersIf you'd use backup power for anything besides outages, the S5000 is the one that pays you back between them.
The specific dimensions that decide these two units — everything else is a tie.
PowerScore Breakdown
Selected because: The BLUETTI scores well ahead on raw output and capacity, and the question is whether your house can use that lead.
overall power score
The BLUETTI's score lead is real and comes from exactly the two places you'd expect: twice the continuous output and nearly three times the stored energy. Neither is inflated.
But a score adds up capability without asking whether you'll use it. A house that never pulls more than 4,500 W at once gets nothing from the second half of the EP900's inverter, and that's the lead that costs the most.
Your Life, Your Pick
Selected because: The two split the scenarios cleanly: the S5000 takes everything away from home, the BLUETTI the long nights at home.
This is a clean split. The S5000 takes Weekend Camping and Tailgate Party by default, because the BLUETTI is bolted to a building, and it takes CPAP Overnight on paper. The BLUETTI wins the 8-Hour Blackout and the Remote Workday on sheer reserve, finishing the blackout with 11,003 Wh left, about 6.7 more nights, against the S5000's 1.6.
One caveat on the CPAP row: Anker's label rates the S5000 for non-habitable spaces and wants a unit this size outside sleeping roomsA7. Both machines belong in the garage or utility room, feeding the bedroom by cord or circuit. Van Life goes to neither, which surprises nobody who has priced a 466 lb van battery.
Portability & Form Factor
Selected because: 97 lb on wheels against a 466 lb installed stack decides whether the battery does anything when the grid is up.
weight
Ninety-seven pounds is not light. It's a cabinet you tip back with a foot on the step and pull like a hand truck, on wheels Anker built in for exactly that reasonA10A11. Getting it up a flight of stairs is a two-person job.
The BLUETTI sidesteps the question by never moving. Its 466 lb matter to the installer on day one. One owner-side point in its favour: BLUETTI sells an enclosure so the system can live outdoorsB5, though a forum commenter doubts how it would cope with real heat or a run of cold, sunless days outsideB6.
Brand Trust
Selected because: Prospective EP900 buyers repeatedly raise BLUETTI support as their worry, and a hardwired system makes support harder to avoid.
Prospective EP900 buyers keep circling the same worry: support. One called the system a dream on paper and asked who knows with BLUETTI tech support; another found the cost competitive but hesitated over negative service reviewsB1B2. The general BLUETTI complaints behind that worry come from other models and aren't confirmed for the EP900B0B11B12.
Ten years of warranty against Anker's five softens it. But a warranty is only as good as getting someone to answer, and on a system wired into your panel you can't simply box it up and send it back.
Strengths & trade-offs
Anker SOLIX S5000
Strengths
- +Costs $11,298 less
- +Lighter by 369 lb
Trade-offs
- –Weaker inverter (-4,500W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI EP900 + 3×B500
Strengths
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$11,298) than the SOLIX S5000.
- –Significantly heavier (+369 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 EP900 + 3×B500 is installed at the electrical panel — it backs up the building and doesn't leave it, 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 EP900 + 3×B500'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
EP900 + 3×B500
Both survive the night. The EP900 + 3×B500 finishes at 13% used with 11,003Wh left — 6.7 more nights like it. The SOLIX S5000 finishes at 39% with 2,625Wh, 1.6 more nights like it. If your outages tend to run past one evening, that difference is the whole argument between them.
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
SOLIX S5000
A CPAP is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here, and the percentages are a formality. What matters is the box next to your pillow, and the only published difference is a rating: the SOLIX S5000 is rated 30dB against the EP900 + 3×B500's 50dB. Each is the maker's own published rating, and the makers do not measure the same way, some quoting a best case and some a figure under load, so neither number describes a 40W draw and the two are not really comparable. Treat them as a reason to look for hands-on reports before either one goes next to a bed, not as a difference you can count on hearing.
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
EP900 + 3×B500
The EP900 + 3×B500 clears the workday at 7% used, banking 11,738Wh — late work, extra calls, or a second laptop charge without arithmetic. The SOLIX S5000 at 21% also finishes, with 3,360Wh of slack for the unplanned.
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 EP900 + 3×B500 is installed at the electrical panel — it backs up the building and doesn't leave it, 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 EP900 + 3×B500'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 gives you a powered van: the EP900 + 3×B500 has the energy but is wired to the building, and the SOLIX S5000 covers about 91% of the 4,685Wh. One can't go; the other can't finish.
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: EP900 + 3×B500 runs 61.7h vs 20.8h.
$13,798 list · direct from BLUETTI
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 0–843.2hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–168.6hHigh-Draw Appliances
These reveal the real limitsscale 0–12.6h¹ 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 Anker SOLIX S5000
Buy the S5000 unless you know your house runs heavy loads together. The EP900 doubles the S5000's 4,500 W continuous rating and holds 14,880 Wh, and that is a genuine whole-home system for $11,298 more. But 4,500 W at 240 V split-phase already covers a well pump, a fridge and a furnace blower at the same time, through an L14-30R that an inlet can takeA2A3. The S5000 then rolls out of the garage for everything else, which a 466 lb installed stack never will. Pay for the EP900 when you want the dryer, the heater and the kitchen live together through an outage. Confidence is 6: the S5000 has had no independent testing, and the BLUETTI's capacity lead is large.
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 BLUETTI's current prices.
$2,499.99 · direct from Anker
or check the EP900 + 3×B500 price$13,798.00 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:EP900 + 3×B500 $13,798
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): Solar Generator.
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 EP900 + 3×B500 rates 4.2/5 (54th percentile of 29 Whole-Home / Off-Grid-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 EP900 + 3×B500 (466 lbs) is a wall-installed system — its weight matters to the installer on day one, then never again.
EP900 + 3×B500: 50dB Published
50dB is about as loud as moderate rainfall. The SOLIX S5000 is rated 30dB — lower, but published by a different maker measuring its own way, so the two figures are not a like-for-like gap. For most people, fan noise around 45dB and up is where sleep starts to suffer.
Warranty: 10 Years vs 5
The EP900 + 3×B500 is covered for 10 years against the SOLIX S5000's 5 years. The cheaper SOLIX S5000 does buy more warranty per dollar (2 years per $1,000 against 0.7), but that is a statement about price, not about coverage — if a fault appears in year 6, only one of these is still covered. An underrated factor if you're keeping this unit for years.
Full record above — the Test Desk pick is the SOLIX S5000.
Check SOLIX S5000 price →or check the EP900 + 3×B500 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. 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
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's scale in consumer electronics, and the InfiniPower name it gives its long-cycle-life design. On this unit the app is confirmed, over Wi-Fi and Bluetooth.
Worth knowing
SOLIX support has reportedly drifted from Anker's historically strong standard, and heavy units involve hazmat return logistics. Some firmware updates have removed features.
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
Support is BLUETTI's biggest risk: some buyers get quick help, others weeks of back-and-forth. Buying direct from BLUETTI tends to produce better outcomes, which matters more on a system you can't unplug and ship back.
Analyst note
Both brands have support question marks. BLUETTI's is the bigger one, and its ten-year warranty is the counterweight.
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.
EP900 + 3×B500
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 14,880Wh.
Accepts up to 9,000W of solar. Enough for a serious multi-panel array.
Limited ports. You'll likely need a power strip or splitter.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the EP900 + 3×B500's higher solar ceiling (9,000W vs 3,000W) 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.
Anker SOLIX S5000
No one outside Anker has used an S5000, so the evidence is Anker's documentation alone. It establishes the 240 V split-phase output at 18.75 A and the outlet line-up from the rating labelA2A3, the idle draw and 8,000 W peak from the product pageA14A16, and UL 9540 and 9540A certificationA19. That's a maker's account of its own unit, and it should be read as oneA0.
“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
BLUETTI EP900 + 3×B500
Genuine long-term reports on the EP900 + 3×B500 are scarce; most of what exists is pre-purchase discussion and review contentB0. Where people with hands on it do speak, it's about the build: one praised the heavy-duty DC disconnect over a simple switch, another the tidy battery cabling that doesn't stick a foot out of the sideB4B9. One reader bought this exact configuration for a home in Costa RicaB10.
The worries are about support and about real-world claims. Prospective buyers hesitate over BLUETTI serviceB1B2; one owner's AC500 firmware issue was resolved in under 24 hours, which cuts the other wayB3. A forum commenter called BLUETTI's marketing unrealistic and wondered about the units' own consumptionB7.
“on paper it's a dream but who knows with Bluetti tech support?”
Sources
diysolarforum.com · lifenhancer.com · bluettipower.worthepenny.co · trustpilot.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]
- Prospective buyers repeatedly cite fear of poor Bluetti customer service/support as a deciding concern before purchase, and general Bluetti-brand reviews (not EP900-specific) corroborate slow or unhelpful support experiences. [EP900 + 3×B500 · 4 entries]
- Owners/installers praise the physical build quality improvements over older Bluetti units — cleaner cable management and a heavy-duty DC disconnect instead of a simple switch. [EP900 + 3×B500 · 2 entries]
- Skepticism exists about outdoor-enclosure durability claims in extreme heat/cold and about the unit's own parasitic power consumption, though this comes from forum speculation rather than confirmed field testing. [EP900 + 3×B500 · 2 entries]
- 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]
- A14
“4,500 W rated, 8,000 W peak AC output; bypass mode passes up to 4,500 W.”
Anker SOLIX S5000 product page, ankersolix.com/s5000 (published 2026-10-09) · 2026-10-09 · [positive]
- A15
“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]
- 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
“on paper it's a dream but who knows with Bluetti tech support?”
diysolarforum.com — Bluetti EP900 thread · 2023-04 · [mixed]
- B2
“We are looking into adding a home battery backup, specifically the EP900 with 3 B500 batteries. The cost seems really competitive, but I'm concerned about some very negative customer service reviews.”
diysolarforum.com — Bluetti EP900 thread · 2023-04 · [mixed]
- B3
“customer service for EP800/900 ESS can be reached directly through this number... Their email support is also very responsive, and last time it took less than 24 hours to resolve a firmware issue with my AC500.”
diysolarforum.com — Bluetti EP900 thread · 2023-04 · [positive]
- B4
“Nice that Bluetti finally came up with a battery cable system between it's batteries that isn't a giant bulky obtrusive cable sticking a foot out.”
diysolarforum.com — Bluetti EP900 to Power your House thread · 2023-04 · [positive]
- B5
“The one thing nice about this EP900 is they sell an enclosure and it can be kept outdoors.”
diysolarforum.com — Bluetti EP900 to Power your House thread · 2023-04 · [positive]
- B6
“Sunshine on it, it'll get hot... if you need to use it in real heat, or real cold for a string of near solar-less winter days I wouldn't count on it if it's installed outside.”
diysolarforum.com — Bluetti EP900 to Power your House thread · 2023-04 · [negative]
- B7
“Imho, Bluetti marketing is quite unrealistic. I wonder what the units consume themselves.”
diysolarforum.com — Bluetti EP900 to Power your House thread · 2023-04 · [negative]
- B9
“I really like that there's a heavy-duty DC disconnect on these units rather than a button or switch. This will be much more reliable long term.”
lifenhancer.com — Bluetti EP900 Review · 2025-03 · [positive]
- B10
“Bought the EP900 + 3×B500 for our home in Costa Rica.”
lifenhancer.com — Bluetti EP900 Review (reader comment referenced in review) · 2025-03 · [positive]
- B11
“I've had one of the worst experiences with customer service ever. My power station stopped charging, and since it was still under warranty, I reached out to the company.”
bluettipower.worthepenny.com — Bluetti Power customer review aggregator · unknown · [negative]
- B12
“Customer service is difficult to reach, only via a chat app on the website, and they are unable to assist you further.”
trustpilot.com — Bluetti reviews · 2025 (approx.) · [negative]
Research compiled October 9, 2026.
Who Should Buy Which
Buy the SOLIX S5000 if you…
- →Your outage plan is the well pump, the fridge, the furnace blower and the lights, all comfortably under 4,500 W, and you'd rather keep the difference than pay for headroom.
- →You want the same battery on the job site or at the campground on a sunny Saturday, not just waiting in the utility room for a storm.
- →You rent, or might move, and don't want a system that belongs to the walls.
Buy the EP900 + 3×B500 if you…
- →You want the whole house live in an outage, dryer and electric heat included, without choosing which circuits to run.
- →You're installing a permanent home battery and want it in the panel, with 14,880 Wh in reserve and ten years of warranty behind it.
If neither fits
If you're only after a night of lights, the router and the fridge, both are wildly more than you need. A portable in the 1 to 2 kWh range does that job and fits in a hall closet.
The Bottom Line
The EP900 + 3×B500 is the better whole-home system and nobody should pretend otherwise: twice the continuous output, nearly three times the energy, twice the warranty. But most outage plans fit inside 4,500 W, and the S5000 delivers that at 240 V for $11,298 less, then rolls out the door when the grid comes back.
Check your panel. If the heavy loads have to run together, buy the BLUETTI. If they don't, buy the S5000.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Can the Anker SOLIX S5000 power a whole house like the BLUETTI EP900?
It can power a lot of one, but not all of it at once. The S5000 runs 4,500 W continuously at 120 V or 240 V split-phase, which covers essentials like a well pump, fridge and furnace fan. The EP900 runs 9,000 W, so it's the one for heavy loads together, such as a dryer and electric heat.
Is the EP900 + 3×B500 cheaper per kWh than the S5000?
No. Both are rated for 6,000 cycles, and the S5000 works out at $0.08 per lifetime kWh against the BLUETTI's $0.15. The BLUETTI's extra cost buys output, capacity and a longer warranty rather than cheaper energy.
How much power does the Anker S5000 use when idle?
Anker rates it at 8.8 W on 120 V output and 13.7 W on 240 V, from its own internal testing. That's roughly 211 Wh a day on 120 V. Our record has no matching figure for the EP900.
Does the S5000 need to be installed like the EP900?
No. It has its own outlets and rolls on wheels, so it works as a plug-in unit. To feed your home's circuits you'd still connect it through an inlet and transfer switch, whereas the EP900 is hardwired into a subpanel.
Where to buy
Anker SOLIX S5000Pick
$2,499.99
$2,499.99 · direct from Anker
BLUETTI EP900 + 3×B500
$13,798.00
$13,798.00 · direct from BLUETTI
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.