Head-to-head test
Anker SOLIX S5000 vs BLUETTI 2×EP900 + 4×B500
This is a 15,200W system wired into your panel against a 4,500W box on wheels, and the only buyer who should pay for that gap is the one who needs the range, the dryer and everything else running at the same moment.
Full profiles: Anker SOLIX S5000 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
The S5000 is the cheaper of the two by $18,696, and it is also the smaller machine by every measure that shows up on a spec sheet: 4,500W against 15,200W, 5,024Wh against 19,840Wh. That is not a close fight on size. The question is whether you need the size.
These two are built for different nights. The BLUETTI stack is two EP900 inverters and four B500 batteries installed at the electrical panel, so the house runs as if nothing happened. The S5000 is a 97 lb cabinet on wheels with a 240V L14-30R outlet. It backs up the circuits you choose, and on a Saturday in July it can leave the garage.
One reviewer measured their own all-electric house and never saw more than 8,500W, even with an induction cooktop, washer, dryer and oven all goingB9. That is nearly twice what the S5000 can deliver and barely half of what the BLUETTI can. Which side of that line your outage plan sits on is the whole decision.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
So the S5000 is an essentials system by design. You pick the circuits, usually fridge, furnace blower, well pump, lights and internet, and you don't run the oven and the dryer during the outage. The BLUETTI is the one setup here where nobody in the house has to be told what not to plug in.
S5000 rated output: 4,500W2×EP900 + 4×B500 rated output: 15,200WA reviewer's all-electric house peaked at 8,500W with induction cooktop, washer, dryer and oven running togetherB9
Why it mattersIf you can name the circuits you'd give up for a day, the S5000 covers you; if you can't, or won't, budget for the BLUETTI.
Over the rated life that works out to about eight cents per lifetime kWh on the S5000 and eighteen on the BLUETTI. The second five years of warranty is the one thing the extra money buys that the S5000 can't match at any configuration.
Both are rated 6,000 cycles, which the engine turns into 16.4 years of daily use on eachCost per watt-hour: fifty cents on the S5000 against a dollar seven on the BLUETTI stackWarranty: 5 years on the S5000, 10 years on the BLUETTI
Why it mattersBuyers who want the cheapest stored energy should take the S5000; buyers who want someone else on the hook in year eight should weigh the BLUETTI's warranty seriously.
On a bank this size that standby tax matters: the gap is about 118Wh a day (4.9W more, over 24 hours), saved simply by switching 240V off when no 240V load needs it. Over a long outage that's the S5000's reserve leaking away while nothing is plugged in. On the BLUETTI there's no published figure to plan with at all.
Anker rates the S5000's idle draw at 13.7W on 240V output and 8.8W on 120VA16The S5000 has 4,270Wh usable after the engine's 85% derateBLUETTI's idle draw is not on our record, and a forum commenter asked the same question about itB6
Why it mattersS5000 owners running a long outage should keep 240V off until the well pump or dryer actually needs it.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: Both survive one night easily; the difference is how many nights follow it.
continuous output
An eight-hour blackout leaves the S5000 at 39% used with 2,625Wh in hand, about 1.6 more nights like it. The BLUETTI finishes with 15,219Wh left, enough for 9.3 more. By the second evening the S5000 owner is thinking about the sun or a generator; the BLUETTI owner is thinking about dinner.
The S5000 closes some of that gap on recovery. It takes up to 4,500W from a 240V source and up to 3,000W of solar, so a sunny afternoon or a generator run puts a day back in it quickly. It just can't bank a week.
Lifetime Value
Selected because: Both are rated 6,000 cycles, so lifetime cost comes down to what each watt-hour costs to buy.
cost / lifetime kWh
Same cycle rating, very different price per watt-hour. Both are rated 6,000 cycles, so neither battery outlives the other on paper, and the S5000 delivers its lifetime energy at less than half the BLUETTI's cost per kWh.
What the BLUETTI's money does buy is the 10-year warranty, double the S5000's 5. If a fault shows up in year seven, only one of these is still covered. That is a real reason to pay more. It's just not a reason the battery itself gives you.
Portability & Form Factor
Selected because: One rolls on wheels and one is installed at the panel, which decides where each can ever work.
weight
At 97 lb the S5000 is a tip-it-back-on-the-wheels lift, not a carry. The BLUETTI stack is 686 lb spread across six boxes and an installer's afternoon, and a reviewer put a single EP900 head unit alone at 97 pounds, the same as the entire AnkerB10.
Mobile doesn't mean bedside, though. Anker's own label rates the S5000 for non-habitable spaces and keeps anything over 1 kWh out of sleeping roomsA7. Its range is garage to driveway to campsite, which is still a range the BLUETTI doesn't have.
Growth Path
Selected because: The S5000 can add batteries past the BLUETTI's configured capacity, but never past 4,500W of output.
solar input
Add five BP5000 batteries and the S5000 reaches 30,144WhA6, more nameplate than this BLUETTI configuration ships with. The catch is the inverter. Every battery you add buys hours, never watts: the S5000 still tops out at 4,500W with all five attached.
The BLUETTI grows from a much larger base and takes 18,000W of solar against the S5000's 3,000W. If your long-term plan is a big roof array feeding a whole-house battery, it's the platform built for that.
Strengths & trade-offs
Anker SOLIX S5000
Strengths
- +Costs $18,696 less
- +Lighter by 589 lb
Trade-offs
- –Weaker inverter (-10,700W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI 2×EP900 + 4×B500
Strengths
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$18,696) than the SOLIX S5000.
- –Significantly heavier (+589 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 2×EP900 + 4×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 2×EP900 + 4×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
2×EP900 + 4×B500
Both survive the night. The 2×EP900 + 4×B500 finishes at 10% used with 15,219Wh left — 9.3 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 2×EP900 + 4×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
2×EP900 + 4×B500
The 2×EP900 + 4×B500 clears the workday at 5% used, banking 15,954Wh — 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 2×EP900 + 4×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 2×EP900 + 4×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 2×EP900 + 4×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: 2×EP900 + 4×B500 runs 82.3h vs 20.8h.
$21,196 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 0–1124.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–224.9hHigh-Draw Appliances
These reveal the real limitsscale 0–16.9h¹ 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
Take the S5000 unless you need the whole house live at once. It carries 5,024Wh and 4,500W at 120V or 240V split-phase for $2,500, and it does the job most outage plans actually describe: fridge, furnace blower, lights, router, a few circuits fed through an inlet. The BLUETTI pair costs $18,696 more and buys three real things: 15,200W of output, 19,840Wh of storage and a 10-year warranty against 5. If your house routinely pulls more than 4,500W during an outage and you won't trim it, that is the BLUETTI's case, and it's a strong one. Confidence stops at 6 because nobody outside Anker has tested the S5000 yet.
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 2×EP900 + 4×B500 price$21,196.00 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated October 9, 2026
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 2×EP900 + 4×B500 rates 4.6/5 (79th 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 2×EP900 + 4×B500 (686 lbs) is a wall-installed system — its weight matters to the installer on day one, then never again.
2×EP900 + 4×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 2×EP900 + 4×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 0.5), 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 2×EP900 + 4×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 brings consumer-electronics scale to the SOLIX line, and the S5000 is rated 6,000 cycles to 80% with UL 9540 and 9540A listings.
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.
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
The broadest lineup in the category, from small portables to whole-home systems like this EP900 stack, with dual-voltage 120V/240V in its 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
Two very different support bets. Anker's SOLIX support is US-based but trending toward scripted responses, and returning a heavy unit is a hazmat shipment. BLUETTI's is email-led and inconsistent, though buying direct tends to go better. For an installed system with a 10-year warranty, how a claim gets handled in year eight matters more than any spec here.
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.
2×EP900 + 4×B500
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 19,840Wh.
Accepts up to 18,000W 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 2×EP900 + 4×B500's higher solar ceiling (18,000W 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
Nobody outside Anker has published time with the S5000, so everything here is Anker's own documentation. The rating label confirms the 5,024Wh LiFePO4 pack and 4,500W at 120V or 240V split-phase, with L14-30R, TT-30R and 5-20R outletsA1A2A3. The product page adds the 97 lb wheeled cabinet, 6,000 cycles to 80% and 5 years of coverageA11A12, and Anker lists UL 9540 and 9540A certificationA19. That's a well-documented spec sheet, not a track record.
“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 2×EP900 + 4×B500
Field evidence for this exact two-EP900, four-B500 setup is thin: our research found no long-term owner reports for the configuration, only forum discussion, buyer's guides and single reviewsB0. The forum tone is hopeful but wary about supportB1; one commenter praised fast email support, but on a different BLUETTI model, an AC500B2. Others doubt the outdoor install in desert heat or long sunless cold spellsB5B7, and question how realistic BLUETTI's marketing is and what the units draw themselvesB6.
The useful hands-on detail comes from a review: that house never pulled more than 8,500W even with the big kitchen and laundry loads togetherB9. The battery cabling earned praise for being tidyB3, with the fair objection that it's proprietaryB4. And the weight is consistently treated as professional-install territory, not something you moveB10B11.
“on paper it's a dream but who knows with Bluetti tech support?”
Sources
diysolarforum.com · ecopowerit.com · lifenhancer.com · bestgeneratorsolar.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 express hope but uncertainty about real-world reliability and Bluetti's tech support quality before committing to purchase, rather than reporting post-purchase experience. [2×EP900 + 4×B500 · 2 entries]
- Forum commenters are skeptical of Bluetti's outdoor-enclosure marketing claims, citing concerns about extreme heat/cold performance and self-consumption/idle drain that go unaddressed by the company. [2×EP900 + 4×B500 · 3 entries]
- The system's heavy weight (97 lbs per EP900 unit) is repeatedly noted as making it effectively a professionally-installed, non-portable fixture rather than a movable power station. [2×EP900 + 4×B500 · 2 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]
- A6
“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]
- 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]
- 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]
- 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
“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]
- B3
“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. Well done.”
diysolarforum.com — 'Bluetti EP900 to Power your House' thread · 2023-04 · [positive]
- B4
“Though I'm generally not for proprietary connectors.”
diysolarforum.com — 'Bluetti EP900 to Power your House' thread · 2023-04 · [negative]
- B5
“Sunshine on it, it'll get hot. 110-118f las vegas or CA desert temps, good luck.”
diysolarforum.com — 'Bluetti EP900 to Power your House' thread · 2023-04 · [negative]
- B6
“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]
- B7
“It may have temperature protections, or even internal heat, but 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]
- B9
“In our house, we've never used more than 8,500 watts of AC power at a time, even when running an induction stovetop, electric clothes washer and dryer, and electric oven all at the same time.”
lifenhancer.com — 'Bluetti EP900 Review' · 2025-03 · [positive]
- B10
“It weighs a hefty 97 pounds, but the compact shape and integrated handles make it something you could lug around.”
lifenhancer.com — 'Bluetti EP900 Review' · 2025-03 · [mixed]
- B11
“While not easily movable (due to weight), its modular nature makes shipping and handling more manageable for professional installers.”
bestgeneratorsolar.com — 'BLUETTI EP900 + B500 Buyer's Guide' · 2025-04 · [mixed]
Research compiled October 9, 2026.
Who Should Buy Which
Buy the SOLIX S5000 if you…
- →The homeowner with a gas furnace and a generator inlet who wants the fridge, the blower, the lights and the router to carry on through a storm, and is happy to leave the dryer for later.
- →The household that wants one machine for the garage in winter and the campsite or RV pad in summer, where the TT-30R plugs straight into the trailer.
- →Anyone who'd rather add batteries later than pay for a whole-house system on day one.
Buy the 2×EP900 + 4×B500 if you…
- →The all-electric house with an induction range, electric dryer and heat pump, where the family won't ration circuits during an outage.
- →The owner building toward a large solar array who wants a battery bank and up to 18,000W of solar input installed once, at the panel, with 10 years of cover.
If neither fits
If the plan is a CPAP, a laptop and a phone through a short outage, both are absurd overkill; a 1 to 2 kWh portable station does that for a fraction of either price. And if you want a grid-tied home battery that your utility or solar installer manages, look at installer-supplied home storage instead.
The Bottom Line
Buy the S5000 if your outage plan has a list of circuits on it. It carries those circuits on 4,500W, rolls out of the garage when the weather's good, and costs $18,696 less than the BLUETTI stack for the same rated cycle life.
Buy the BLUETTI only if the list is everything. That's what 15,200W and a panel install are for, and if your house really runs the range and the dryer through a blackout, nothing on the Anker side catches it.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Can the Anker SOLIX S5000 power a whole house?
Not all of it at once. It delivers 4,500W, and a busy all-electric house can pull nearly twice that, as one reviewer's 8,500W peak showed. It covers a chosen set of essential circuits well. The BLUETTI 2×EP900 + 4×B500 is rated 15,200W, which is whole-house territory.
Is the BLUETTI EP900 system worth the extra money over the S5000?
Only if you need its output or its warranty. It costs $18,696 more, carries nearly four times the battery and 15,200W against 4,500W, and is covered for 10 years against 5. Its cells are rated to the same 6,000 cycles, so you aren't buying a longer-lived battery.
How many nights of outage does each one cover?
On our eight-hour blackout load, the S5000 finishes with 2,625Wh left, about 1.6 more nights. The BLUETTI stack finishes with 15,219Wh, about 9.3 more. With 3,000W of solar input the S5000 can win back a day's energy on a sunny afternoon.
Can I keep the S5000 next to my bed?
No. Anker's rating label puts it in residential non-habitable spaces and keeps anything holding more than 1 kWh out of sleeping rooms. Park it in the garage or a utility room and run power to where you need it.
Where to buy
Anker SOLIX S5000Pick
$2,499.99
$2,499.99 · direct from Anker
BLUETTI 2×EP900 + 4×B500
$21,196.00
$21,196.00 · direct from BLUETTI
Last checked 70 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.