Head-to-head test
Anker SOLIX S5000 vs BLUETTI AC300 + 4×B300
The AC300 stack has the most stored energy on the page and the weakest inverter to spend it with, so it only wins for a buyer who needs days of reserve on modest 120V loads.
Full profiles: Anker SOLIX S5000 → · BLUETTI AC300 + 4×B300 →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Four B300 packs give the BLUETTI AC300 12,288Wh, about 2.4 times the Anker SOLIX S5000's 5,024Wh, and 367.2 lb of hardware to hold it. The S5000 answers with the stronger inverter, 4,500W against 3,000W, in one 97 lb cabinet at $2,500.
We'd buy the S5000. The AC300 stack's price per watt-hour is a touch lower, $0.46 against $0.50, but its 3,500-cycle rating means every kilowatt-hour it ever delivers costs $0.13 against the S5000's $0.08. The S5000 also brings 240V split-phase, a quicker rated switchover and a year more warranty.
Here's the honest catch. If you need two or three days off-grid with no sun, 12,288Wh is a different animal, and the S5000 only gets there with BP5000 expansion packs our record doesn't price. Size is the AC300 stack's whole case, and on that one axis it wins outright.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Over a three-day outage with the inverter on, standby alone takes 4,320Wh from the AC300 stack (1,440 × 3), more than a third of it, against about 634Wh from the S5000. The 7,264Wh nameplate gap shrinks to about 3,580Wh before either one has powered a lamp.
AC300 idle draw close to 60W with AC output on, per one ownerB2S5000 idle draw 8.8W on 120V, by Anker's internal testingA16Over 24 hours: 1,440Wh (60 × 24) against about 211Wh (8.8 × 24)
Why it mattersIf you'd leave the inverter running through an outage, the AC300 stack's capacity lead is about half what the spec sheet suggests.
continuous output
The AC300 stack has the biggest tank on the page and the narrowest tap. Several large 120V loads at once, or any 240V load at all, hit its 3,000W ceiling long before they make a dent in 12,288Wh, so a lot of that stored energy can only be spent slowly.
S5000: 4,500W rated, 8,000W peak, with 240V split-phase through an L14-30RA2A14AC300 + 4×B300: 3,000W rated, 6,000W surgeAC300 stack record: 0 240V outlets
Why it mattersAnyone planning to run a 240V circuit or several big appliances together should rule out the AC300 stack whatever its capacity.
cost / lifetime kWh
And all that energy flows through one head unit. Four battery packs are only as useful as the inverter they plug into, and one owner's account of a dead AC300 with no repair partsB9B10 is the scenario that turns 12,288Wh into shelf weight.
AC300 stack: 3,500 cycles, 4-year warranty; S5000: 6,000 cycles, 5 yearsLifetime energy: AC300 stack 43,008 kWh, S5000 30,144 kWh; cost per lifetime kWh $0.13 against $0.08One owner's AC300 head unit failed, and Bluetti support said the AC300 is discontinued with no parts to repair itB9B10
Why it mattersIf you're buying for a decade, weigh where you'd get the inverter fixed as heavily as how much battery sits behind it.
The specific dimensions that decide these two units — everything else is a tie.
Runtime: Will It Power Your Gear?
Selected because: Stored energy is the AC300 stack's whole case, so how many nights each one carries is where it has to win.
continuous output
Five nights against under two. Out of an eight-hour blackout the AC300 stack keeps enough for 5.3 more, the S5000 for 1.6, and it wins the remote-workday row too, at 9% used against 21%. If you're stocking for a storm that takes the grid out for most of a week, those rows are the reason this page exists, and they point at BLUETTI.
Two things cut into the lead. Idle draw takes a bigger daily bite from the AC300 stack, as the chain above shows, and the S5000's 3,000W of solar input against 2,400W refills its smaller tank faster when the sun does come out. In a sunny outage the S5000 is full most afternoons; in a grey one, the AC300 stack's size is all that matters.
Lifetime Value
Selected because: A cheaper watt-hour on the AC300 side turns into a dearer lifetime kilowatt-hour once cycle ratings are counted.
cost / lifetime kWh
Thirteen cents against eight. The AC300 stack's sticker per watt-hour is the lower of the two, but 3,500 rated cycles against 6,000 flips it once you spread the price over everything each battery will ever deliver. Cycled daily, the AC300's rating runs out in 9.6 years and the S5000's in 16.4, so the bigger purchase is also the one you replace first.
What the Specs Don't Tell You
Selected because: Switchover class, warranty term and published noise all differ, and each one matters to a particular buyer.
rated cycles
The S5000's ≤10ms switchover rating against ≤20ms is the card for anyone protecting a desktop PC; the fussiest power supplies sit right at the slower class. Warranty runs 5 years against 4. On noise, Anker publishes 30dB for quiet operationA13 and BLUETTI publishes nothing for the AC300, though owners and reviewers find its fan audible under load and quiet for its sizeB5B6. Neither unit belongs in a bedroom anyway: Anker's own label puts the S5000 outside sleeping roomsA7.
Brand Trust
Selected because: The AC300 has years of field reports, including head-unit failures with no repair parts; the S5000 has only its maker's documentation.
The AC300 has years of field history, which cuts both ways. Owners praise the buildB1 and the fanB6, and dislike the appB7B8. The sharp edge is one owner's head unit dying with Bluetti support saying the AC300 is discontinued and has no parts leftB9B10. The S5000 has none of that history, good or bad, only Anker's documentation, so it's an unknown against a known risk.
Strengths & trade-offs
Anker SOLIX S5000
Strengths
- +Costs $3,096 less
- +Lighter by 270.2 lb
- +Higher AC output
- +Longer warranty
- +Faster solar charging
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI AC300 + 4×B300
Strengths
- +Larger battery capacity
Trade-offs
- –Substantially more expensive (+$3,096) than the SOLIX S5000.
- –Significantly heavier (+270.2 lbs), making it harder to move.
- –Weaker inverter (-1,500W) limits appliance compatibility.
- –Very heavy unit that may be difficult for one person to lift.
- –Shorter-lived battery — rated for 3,500 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 AC300 + 4×B300 at 367.2 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 AC300 + 4×B300'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
AC300 + 4×B300
Both survive the night. The AC300 + 4×B300 finishes at 16% used with 8,800Wh left — 5.3 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
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 AC300 + 4×B300 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
AC300 + 4×B300
The AC300 + 4×B300 clears the workday at 9% used, banking 9,535Wh — 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 AC300 + 4×B300 at 367.2 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 AC300 + 4×B300'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
AC300 + 4×B300
The SOLIX S5000 doesn't finish — 4,270Wh usable against the 4,685Wh this needs leaves it 415Wh short, about 91% of the scenario covered (its nameplate 5,024Wh actually clears this — the flat 15% conversion allowance is what tips it under). The AC300 + 4×B300 covers it with 5,760Wh to spare.
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: AC300 + 4×B300 runs 51h vs 20.8h.
$5,596 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 0–696.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–139.3hHigh-Draw Appliances
These reveal the real limitsscale 0–10.4h¹ 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
Buy the S5000 unless multi-day reserve is the only thing you're buying. The AC300 with four B300 packs holds 12,288Wh against 5,024Wh, and out of an eight-hour blackout it keeps 5.3 more nights to the S5000's 1.6, which is a different class of reserve. Everything else runs the other way: the S5000 has 4,500W of output against 3,000W, 240V split-phase where the AC300 stack's record shows none, 6,000 rated cycles against 3,500, a fifth year of warranty, and a rated idle draw of 8.8WA16 where one AC300 owner measured close to 60WB2. It also costs $3,096 less and weighs 97 lb against 367.2. Confidence stops at 6 because the AC300 stack's capacity lead is real, and because nobody outside Anker has tested the S5000.
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 AC300 + 4×B300 price$5,596.00 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:AC300 + 4×B300 $5,596
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 AC300 + 4×B300 rates 3.3/5 (1st 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 AC300 + 4×B300 (367.2 lbs) is spread across its boxes — no single lift, but nothing you reposition on a whim. That's a 270 lb difference, and it is paid once — getting the heavier one into position, not every time you move it.
UPS Switchover: ≤10ms vs ≤20ms
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 AC300 + 4×B300 is rated ≤20ms — 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: 5 Years vs 4
The SOLIX S5000 is covered for 5 years against the AC300 + 4×B300's 4 years. An underrated factor if you're keeping this unit for years.
Battery Lifespan in Real Years
The SOLIX S5000 is rated for 6,000 cycles vs 3,500. In real life: at daily use, that's 16.4 vs 9.6 years. At weekend use (twice a week), it's 58 vs 34 years. One caution reading years across different sizes: a cycle is 5,024Wh on the SOLIX S5000 and 12,288Wh on the AC300 + 4×B300, so count lifetime energy — roughly 30,144 kWh against 43,008 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
AC300 + 4×B300: Noise Level Not Disclosed
The SOLIX S5000 publishes its noise level (30dB); the AC300 + 4×B300 doesn't publish one. That isn't evidence the AC300 + 4×B300 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 AC300 + 4×B300 before deciding.
Full record above — the Test Desk pick is the SOLIX S5000.
Check SOLIX S5000 price →or check the AC300 + 4×B300 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 caution on the lifespan row: the SOLIX S5000 takes longer to reach its cycle rating, but a cycle moves a different amount of energy on each unit — the AC300 + 4×B300 still delivers more over its shorter horizon (43,008 vs 30,144 kWh). Years measure wear, not usefulness.
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
The S5000 carries UL 9540 and UL 9540A listings and a 5-year warranty on Anker's own documentation, and its expansion path runs to five BP5000 packs.
Worth knowing
Recent reports describe SOLIX support leaning on AI agents and difficult return logistics for heavy units, which is worth weighing on a 97 lb cabinet.
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
BLUETTI has no spare-parts policy for some older and discontinued units, and support quality varies widely. On a stack that depends on one AC300 head unit, that's the brand risk that matters most.
Analyst note
Anker's support is slipping from a high standard; BLUETTI's has always been uneven and its parts support for older units is the sharper worry here. Neither brand earns a premium on this pair, so let the inverter and the cycle rating decide.
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.
AC300 + 4×B300
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 12,288Wh.
Accepts up to 2,400W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
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, 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 field evidence on the S5000 yet. Everything on record is Anker's own documentation: the 5,024Wh LiFePO4 packA1, 4,500W rated with an 8,000W peakA14, up to five BP5000 expansion packsA6, and an 8.8W idle draw and 6,000-cycle rating from Anker's internal testingA12A16.
“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 AC300 + 4×B300
Our research found the AC300 heavily reviewed, though most quantitative reports describe an AC300 with a single B300 rather than this four-pack stackB0. Owners and reviewers consistently describe the fan as audible under load but quiet for its sizeB5B6, and one owner was struck by the build qualityB1. Idle draw is the persistent complaint: the same owner measured close to 60W with the AC output on and nothing plugged inB2. The app draws criticism as basicB7, and some owners report it failing to connectB8.
The serious report is about longevity. One owner's AC300 head unit failed after years of use, and Bluetti support told him that with the AC300 discontinued there were no parts to repair itB9B10. It's a single thread, but on a stack where every pack depends on one inverter, it's the one to read.
“I was immediately impressed with the unit's quality, finish, and clever design.”
Sources
reviewed.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]
- Idle power draw is noticeably higher than expected and drains meaningful battery even with no connected load. [AC300 + 4×B300 · 2 entries]
- Reviewers and owners consistently describe the AC300's fan as audible under load but notably quiet for its size and class. [AC300 + 4×B300 · 2 entries]
- The companion app is described as basic/limited, and some owners report Bluetooth or app-pairing problems connecting to the AC300+B300. [AC300 + 4×B300 · 2 entries]
- After several years of service, some head units fail outright, and once discontinued Bluetti has no repair parts and does not recommend repairing out-of-warranty units. [AC300 + 4×B300 · 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]
- 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]
- 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]
- 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]
- B1
“I was immediately impressed with the unit's quality, finish, and clever design.”
Clean Energy Reviews Forum — "Bluetti Power Station Review (AC300) Off-grid Backup" (user Svarky) · 2023-07 · [positive]
- B2
“When the AC output is switched on, the idle power draw (with no load) appears to be close to 60W, which is high.”
Clean Energy Reviews Forum — "Bluetti Power Station Review (AC300) Off-grid Backup" (user Svarky) · 2023-10 · [negative]
- B5
“The AC300 + B300 has a little bit of noise coming from the fan. It's NOT silent. But considering the size and use case... you'll forget it's there.”
GreenCitizen — "Bluetti AC300 + B300 Power Station Review: Real-Life Lab Test Results" · 2025-01 · [positive]
- B6
“The powered fans within my AC300 units are extremely quiet when running – no detectible motor or bearing noise; only air movement is slightly heard.”
DIY Solar Power Forum — "Fan noise level of Bluetti AC200MAX?" thread (AC300 owner's comparison reply) · unknown · [positive]
- B7
“The companion app brings basic functionality to your fingertips but leaves you longing for more.”
GreenCitizen — "Bluetti AC300 + B300 Power Station Review: Real-Life Lab Test Results" · 2025-01 · [negative]
- B8
“App (v3.0.1) keeps loading indefinitely even when the AC300 itself shows it is "Connected."”
BLUETTI Community forum — "AC300+B300 doesn't connect to Bluetti App" thread · unknown · [negative]
- B9
“I just had my AC300 head unit fail with a007 App error, and 00 006 and 01 006 errors on the console screen and 2 days later.... click click click.. DEAD.”
DIY Solar Power Forum — "Bluetti - Screw you - AC300 dead and no parts to fix it anymore 5 years after launch" · 2026-03 · [negative]
- B10
“Due to the AC300 being discontinued, they don't have the necessary parts for repairs. Considering the repair costs and round-trip shipping fees, we don't recommend repairing it.”
DIY Solar Power Forum — "Bluetti - Screw you - AC300 dead and no parts to fix it anymore 5 years after launch" (Bluetti support reply relayed by OP) · 2026-03 · [negative]
Research compiled October 9, 2026.
Who Should Buy Which
Buy the SOLIX S5000 if you…
- →You want 240V split-phase from one cabinet for a transfer switch, and 4,500W of headroom when the furnace, fridge and kettle all run at once.
- →You'll cycle the battery daily and want the 6,000-cycle rating and the fifth year of warranty behind it.
- →You'd rather start at 5,024Wh and add BP5000 packs later than store 12,288Wh of energy up front.
Buy the AC300 + 4×B300 if you…
- →You're stocking for week-long outages under cloud, your loads stay comfortably under 3,000W on 120V, and 5.3 more nights after the first one is the whole point.
- →The stack will sit in a basement for years and the biggest reserve on the page matters more to you than inverter strength or idle draw.
If neither fits
If you were picturing something for camping or the truck, both of these weigh as much as furniture; a compact portable you lift with one hand is the right category. And if you're covering a whole house for days, a hardwired home battery installed by an electrician will serve you better than either.
The Bottom Line
The AC300 stack wins one contest, stored energy, and wins it by a lot: 5.3 more nights out of a blackout against 1.6. Everything else, from the 3,000W ceiling to the 60W idle draw to 3,500 rated cycles, pulls that lead back toward the S5000, which also costs $3,096 less.
If you're stocking for a week in the dark on small loads, the AC300 stack earns its basement corner. For everyone else, the S5000 is the better machine to wheel into the garage.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Should I buy the BLUETTI AC300 with four B300 batteries or the Anker SOLIX S5000?
The S5000, unless days of stored reserve on 120V loads is all you need. The AC300 stack holds about 2.4 times the energy, but the S5000 has 1,500W more output, 240V split-phase, 6,000 rated cycles against 3,500, and costs $3,096 less.
How much power does the AC300 use when it's just sitting there?
One owner measured close to 60W with the AC output on and no load, which works out to about 1,440Wh a day, around 12% of the full 12,288Wh stack. Anker rates the S5000's idle draw at 8.8W on 120V, about 211Wh a day. If you leave the inverter on through an outage, that difference adds up fast.
Can the Anker S5000 match the AC300 stack's 12,288Wh of storage?
With expansion, yes. It takes up to five BP5000 packs of 5,024Wh each, so the base plus two packs reaches 15,072Wh (3 × 5,024), past the AC300 stack's 12,288Wh. Our record doesn't carry a price for the BP5000, so we can't say what that costs.
Can the AC300 run 240V appliances?
Not on our record, which lists no 240V outlet for the AC300 stack, and its inverter tops out at 3,000W. The S5000 delivers up to 4,500W at 240V split-phase through an L14-30R.
Where to buy
Anker SOLIX S5000Pick
$2,499.99
$2,499.99 · direct from Anker
BLUETTI AC300 + 4×B300
$5,596.00
$5,596.00 · direct from BLUETTI
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.