Head-to-head test
Anker SOLIX S5000 vs BLUETTI Apex 300 + B300K
At almost the same money, the S5000 gives up about a tenth of the stored energy to get 660W more output, 600W more solar input, and one wheeled 97 lb box in place of a 148.8 lb stack.
Full profiles: Anker SOLIX S5000 → · BLUETTI Apex 300 + B300K →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
The S5000 is the cheaper of these two by $99, and it's the more powerful one: 4,500W of continuous output to the Apex 300's 3,840W, with an 8,000W peak against 7,680W. BLUETTI's answer is capacity. Bolt a B300K under the Apex 300 and you get 5,529.6Wh, about 10% more than the S5000's 5,024Wh.
So the trade is roughly 505Wh of extra storage on one side and 660W of extra output, 600W of extra solar input and 52 lb less weight on the other. Both offer 240V through an L14-30R, both carry a TT-30R for an RV, both list a UPS switchover of no worse than 10 ms, and both carry 5 years of cover (BLUETTI's is up to 5 years, with registration or a direct purchase).
We'd take the S5000. A 10% capacity edge is real, but it is the kind of edge you can buy back later with an expansion pack. Starting a dryer and a well pump at once, or refilling a 5kWh battery before the sun goes down, are things you can't add on.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
solar input
Real panels rarely hit their rating, so stretch both numbers; the ratio holds either way. On a short winter day the S5000 gets back to full with daylight to spare, while the larger BLUETTI battery is also the slower one to refill. Its 10% capacity lead shrinks once you count what each can actually put back by sundown.
S5000: 3,000W solar input, 5,024WhApex 300 + B300K: 2,400W solar input, 5,529.6Wh
Why it mattersIf solar is your outage plan, the S5000's faster refill is worth more than the Apex stack's extra 505Wh.
continuous output
At 240V that headroom is the gap between running a well pump alongside the fridge and the microwave, or switching one of them off. One reviewer ran a washer and then a heat-pump dryer off the Apex 300B9B10. The S5000 does the same work with more room left over.
S5000: 4,500W rated, 8,000W peakApex 300: 3,840W rated, 7,680W peakboth: 240V output via L14-30R
Why it mattersAnyone backing up a house circuit with a big motor on it should lean toward the S5000's extra continuous watts.
weight
Neither one goes up a flight of stairs alone, but the S5000 tips back onto its wheels and rolls to the garage door, which is how you actually use a big station in a storm. The Apex stack gets positioned once and stays put.
S5000: 97 lb, one cabinet, wheels and pull rodApex 300 + B300K: 148.8 lb across two boxesreviewers call the stack near 150 pounds and not something to lug to a picnicB5B14
Why it mattersIf the unit will move even a few times a year, between the garage and a campsite or a jobsite, the S5000 is the practical pick.
The specific dimensions that decide these two units — everything else is a tie.
Portability & Form Factor
Selected because: One 97 lb box on wheels against 148.8 lb split across two units changes where each one can realistically go.
weight
Anker built the S5000 like a carry-on suitcase that ate a battery: a handle on top, a pull rod, wheels at the base and a foot step on the back for tipping it onto themA10A11. That design admits 97 lb is too much to carry and solves it.
The Apex stack is 148.8 lb in two pieces. You can move it, one box at a time, but you won't move it on a whim. If this is a basement installation that never leaves, the difference barely matters. If it's the thing you roll to the driveway to run a saw, it's most of the decision.
Your Life, Your Pick
Selected because: The scenarios split on weight and on Van Life, where the Apex stack's extra 505Wh is the only thing that finishes the day.
Most rows go to the S5000 or tie, and the ones it wins are mostly about getting it there. The real exception is Van Life Daily: on the flat 85% usable allowance the S5000 comes up 415Wh short of the 4,685Wh day, while the Apex stack finishes with 15Wh behind it. That is a finish line, not a cushion. Run that load every day and you'd want more battery than either one starts with.
PowerScore Breakdown
Selected because: The two score close together; it's worth seeing whether output or capacity carries each one.
overall power score
These two land within a hair of each other on the composite, and they get there by opposite routes: the S5000 on output and solar input, the BLUETTI stack on stored energy. When scores are this close, decide on which of those routes matches your house.
Lifetime Value
Selected because: Both land at $0.08 per lifetime kWh, so ownership cost is a tie and the hardware has to decide.
Both are rated for 6,000 cycles, and both come out at $0.08 per lifetime kWh. The S5000 costs $99 less to buy and stores a little less, so the numbers meet in the middle. Spend that small gap on a cord long enough to keep the unit where it belongs.
Strengths & trade-offs
Anker SOLIX S5000
Strengths
- +Costs $99 less
- +Lighter by 51.8 lb
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI Apex 300 + B300K
Strengths
- +Larger battery capacity
Trade-offs
- –Significantly heavier (+51.8 lbs), making it harder to move.
- –Weaker inverter (-660W) limits appliance compatibility.
- –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 Apex 300 + B300K at 148.8 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 Apex 300 + B300K'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
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 Apex 300 + B300K's 45dB. 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
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 Apex 300 + B300K at 148.8 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 Apex 300 + B300K'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
Apex 300 + B300K
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 Apex 300 + B300K covers it with only 15Wh left — well under half a percent of what the day asks, so it finishes with nothing behind it.
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: Apex 300 + B300K runs 22.9h vs 20.8h.
$2,599 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 0–313.3hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–62.7hHigh-Draw Appliances
These reveal the real limitsscale 0–4.7h¹ 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
Take the S5000. It is the cheaper of the two by $99, and both work out at $0.08 per lifetime kWh, so the money settles nothing. What separates them is the hardware: 4,500W of output against 3,840W, 3,000W of solar input against 2,400W, and a single 97 lb cabinet on wheels against a 148.8 lb two-box stack. The Apex 300 + B300K answers with 5,529.6Wh to the S5000's 5,024Wh, about 10% more, and that is the one reason to pause. Confidence stops at 7 because the S5000's side of this page rests on Anker's own documentation; nobody has put one through independent testing yetA0.
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 Apex 300 + B300K price$2,599.00 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:Apex 300 + B300K $2,599
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
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 Apex 300 + B300K rates 4.3/5 (58th 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 Apex 300 + B300K (148.8 lbs) is spread across its boxes — no single lift, but nothing you reposition on a whim. That's a 52 lb difference, and it is paid once — getting the heavier one into position, not every time you move it.
Apex 300 + B300K: 45dB Published
45dB is about as loud as a running refrigerator. 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: No Difference
Both units carry the same 5-year warranty, so coverage isn't a tiebreaker here. The Apex 300 + B300K's figure is a maximum rather than a guarantee — it depends on buying direct from BLUETTI or registering the unit, since reseller purchases carry a shorter term.
Full record above — the Test Desk pick is the SOLIX S5000.
Check SOLIX S5000 price →or check the Apex 300 + B300K 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
Both units cost the same to own over their rated lives — $0.08/kWh each. Lifetime cost can't separate them, so decide on the sticker price and everything else. 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 a 240V-capable flagship, and lists the S5000 as UL 9540 and UL 9540A certified.
Worth knowing
SOLIX support has been less consistent lately than Anker's reputation suggests, and returns of a heavy battery move as hazmat freight, so keep the box.
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
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
Both brands sell this size as a home-backup system with expansion batteries. BLUETTI's lineup is broader and its support is the more uneven of the two, best when you buy direct; Anker's is more predictable, but no longer a sure thing.
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.
Apex 300 + B300K
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 5,530Wh.
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
Everything on file for the S5000 is Anker's own documentation: the rating label and the product page establish the 5,024Wh LiFePO4 pack, the 4,500W split-phase output, the 3,000W of solar input and the 97 lb wheeled chassisA1A2A5A11. Runtime and lifespan figures are Anker's internal testing, and nobody has independently tested a unit yetA0A12.
“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 Apex 300 + B300K
Reviewers keep coming back to two things. The Apex 300 itself has no USB or DC ports beyond its AC outlets and high-voltage connectors, and the Hub D1 that adds them runs about $300B1B2; one reviewer got only 8W to a phone from the B300K and wanted a 100W portB6. The stack is also near 150 pounds, movable with handles or a trolley but not casuallyB5B14.
On performance the reports are warm: one reviewer ran a washer for an hour using 35% of the Apex, then a heat-pump dryer down to 20%B9B10, and another called it close to a generator replacementB4. Recharge was described as under an hourB12. The coverage is early and review-heavy, with no long-term owner data on this exact bundleB0.
“The Apex 300 doesn't have USB ports, DC ports, or much of anything beyond its six AC plugs and high-voltage connectors.”
Sources
thesolarlab.com · techspective.net · digitalreviews.net · thesolarpit.com · cleantechnica.com · trustedreviews.com · bluettipower.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]
- Reviewers consistently flag that the base Apex 300 has no USB/DC ports and requires a separate paid Hub D1 accessory, which some feel is overpriced for what it offers. [Apex 300 + B300K · 3 entries]
- Multiple sources note the extreme weight/bulk of the stacked Apex 300 + B300K system, making 'portable' a stretch despite handles/trolley options. [Apex 300 + B300K · 2 entries]
- Reviewers praise fast recharge and the system's ability to genuinely replace a generator for home backup and heavy loads like washers/dryers. [Apex 300 + B300K · 4 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]
- A5
“Two solar inputs, 3,000 W together: 11–60 V at 17 A (1,000 W) and 16–165 V at 17 A (2,000 W).”
Anker rating label, model AS510 (certified 2026-09-15) · 2026-09-15 · [positive]
- 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]
- 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]
- B1
“The Apex 300 doesn't have USB ports, DC ports, or much of anything beyond its six AC plugs and high-voltage connectors.”
thesolarlab.com — Bluetti Apex 300 Review: Cheap, Practical Home Backup? · unknown (2025/2026) · [mixed]
- B2
“That Bluetti D1 Power Hub that gives you your DC and USB ports costs about $300, which is a steep price for what you're getting.”
thesolarlab.com — Bluetti Apex 300 Review: Cheap, Practical Home Backup? · unknown (2025/2026) · [negative]
- B4
“It's one of the few systems I've tested that feels like it could genuinely replace a generator, without the noise, fumes, or maintenance.”
techspective.net — Bluetti Apex 300 with B300K Review · 2025-09-21 · [positive]
- B5
“Stacked, you're near 150 pounds of lithium iron phosphate and inverter muscle—movable with the built-in handles or a trolley... but not something you'll casually lug to a picnic.”
techspective.net — Bluetti Apex 300 with B300K Review · 2025-09-21 · [mixed]
- B6
“I just wonder why Bluetti did not include a USB-C port with some decent output, like 100 or 140W as I only got a measly 8W charge out of it for my phone.”
digitalreviews.net — Bluetti B300K Expansion Battery Review · 2025-12 · [negative]
- B9
“Results: 1 wash took about 1 hour and drained the Apex from 100% down to 65%.”
digitalreviews.net — Bluetti Apex 300 Power Station Tests (Australia) Part II · 2025-09 · [positive]
- B10
“Just for fun we then turned on our heat pump dryer to see that over 1½ hours it would further drain it down to 20%.”
digitalreviews.net — Bluetti Apex 300 Power Station Tests (Australia) Part II · 2025-09 · [mixed]
- B12
“During my testing, the recharge speed was astonishing. In under an hour, I had a system ready to go again.”
thesolarpit.com — Bluetti Apex 300 Review · 2025-10-28 · [positive]
- B14
“As will you: it weighs in at 38kg, and is probably much too big and heavy for most people to carry alone.”
trustedreviews.com — Bluetti Apex 300 Review · 2025-10-10 · [negative]
Research compiled October 9, 2026.
Who Should Buy Which
Buy the SOLIX S5000 if you…
- →The homeowner who wants a 240V dryer, a well pump and the fridge on one inverter, with headroom left over.
- →The person who will roll it out to the driveway or the jobsite a few times a year, and wants one handle, not two lifts.
- →Anyone counting on rooftop or ground-mount solar to refill it during a long outage, where 3,000W of input refills the pack in well under two hours of full sun.
Buy the Apex 300 + B300K if you…
- →The RV or off-grid owner whose daily draw sits right at the edge of 4,700Wh usable, where the stack's extra 505Wh decides whether the day finishes.
- →Someone already invested in BLUETTI gear who will park the stack once and never move it.
If neither fits
If you're backing up a CPAP, a router and some phones, close this tab. Both are 5kWh machines for whole circuits, and a 1–2kWh portable does that job at a fraction of the weight and cost.
The Bottom Line
Same 6,000 cycles, same lifetime cost per kWh, same 240V and RV outlets. The S5000 costs $99 less and brings 660W more output, 600W more solar input and a set of wheels; the Apex stack brings about 10% more battery. Unless you live right at the edge of 4,700Wh a day, the power and the wheels are worth more than the extra 505Wh. Get the S5000.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Anker SOLIX S5000 better than the BLUETTI Apex 300 with B300K?
For most home-backup buyers, yes. It costs $99 less, puts out 660W more continuous power, accepts 600W more solar, and weighs 52 lb less as one wheeled unit. The Apex 300 + B300K's advantage is 505Wh of extra capacity.
Does the BLUETTI Apex 300 have USB ports?
Reviewers report the Apex 300 itself has no USB or DC ports, and that the Hub D1 adds them at about $300. The S5000 has USB-C at 100W, a second USB-C and a USB-A built into its front panel. Neither has a 12V car outlet.
Can I keep the Anker S5000 in a bedroom for a CPAP?
Anker's rating label says no: the S5000 is rated for residential non-habitable spaces and, holding more than 1kWh, belongs outside sleeping rooms. Park it in a garage or utility room and run a cord. A CPAP uses well under a tenth of either battery overnight, so capacity isn't the issue.
Which one is easier to move around?
The S5000. It's 97 lb in one cabinet with wheels, a pull rod and a step for tipping it back. The Apex 300 + B300K weighs 148.8 lb across two boxes and stays where you set it.
Where to buy
Anker SOLIX S5000Pick
$2,499.99
$2,499.99 · direct from Anker
BLUETTI Apex 300 + B300K
$2,599.00
$2,599.00 · direct from BLUETTI
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.