Head-to-head test
Anker SOLIX C300 vs BLUETTI Apex 300 + B300K
One is 9.1 pounds you carry and one is 148.8 you install, so the only question that settles this is whether your power has to move, because neither unit can do the other's job.
Full profiles: Anker SOLIX C300 → · BLUETTI Apex 300 + B300K →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
$329.99 · direct from Anker
Last checked 1 day ago. Prices move — check before you buy.
$2,599.00 · direct from BLUETTI
Last checked 1 day ago. Prices move — check before you buy.
Spec deltas
9.1 pounds against 148.8. One of these you lift out of the trunk with two fingers; the other is a two-person, set-it-once appliance that never leaves the room you put it in. Cross-shopping them head to head is a little like comparing a daypack to a chest freezer: both store things, and that's about where the overlap ends.
They aren't two versions of the same idea. The Anker SOLIX C300 is a 288Wh, $330 unit for keeping phones, a laptop, and a speaker alive across an afternoon or a campsite. The BLUETTI Apex 300 with its B300K battery is a 5,530Wh, $2,599 system that runs a washer, backs up part of a house, or anchors a van build, and asks a permanent spot in return.
So this page can't crown a better machine, because there's no shared job to win. The pick is settled the moment you answer one question: does your power have to move? Answer it and the wrong unit removes itself. The one trap to sidestep on the way is the cost-per-kilowatt-hour math, which makes the Apex look decisive until you notice you'd spend nine times the C300's price to earn that lower rate on energy a phone-and-speaker life never draws.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Typical price
That $0.14 rate only cashes out if you actually cycle something near the Apex's 19,354 lifetime kilowatt-hours. If your real need is 288Wh of phones and a speaker at a time, you'd be paying $2,269 more to lower a per-unit rate on energy you will never pull.
Apex 300 + B300K: $2,599 for 5,530WhSOLIX C300: $330 for 288Whlifetime cost $0.14/kWh (Apex) vs $0.35/kWh (C300), over 19,354 vs 864 lifetime kWh
Why it mattersIf your loads are small, ignore the per-kWh figure entirely and take the C300; the cheaper rate is only cheaper for someone who empties a 5,530Wh tank on a regular basis.
weight
The split is physical, not marginal: one is a daypack battery, the other a stationary appliance heavier than most people you know. No feature on either spec sheet changes which of those two things your life actually needs.
SOLIX C300: 9.1 lb, carriableApex 300 + B300K: 148.8 lb, stationaryWeekend Camping (2,100Wh): C300 covers about 12%, Apex has the energy but can't travel
Why it mattersThe decision is made before you read a single spec, so answer whether the box has to move and let the other one fall off the list.
That places it below even a mid-size portable, let alone the Apex: it's a daytime keep-the-gadgets-alive unit, not an overnight-appliance or blackout box, so anyone eyeing it for medical or emergency duty is shopping a class too small.
SOLIX C300: 245Wh usable, 300W output, 600W surgeCPAP Overnight needs 320Wh: C300 finishes short by 75WhTailgate 400W peak: C300 starts it on 600W surge but can't hold it on the 300W continuous rating
Why it mattersIf you need a guaranteed CPAP night or any real appliance, size up from the C300, though rarely all the way to a 148.8-lb Apex.
The specific dimensions that decide these two units — everything else is a tie.
Portability & Form Factor
Selected because: The nine-pound unit travels and the 148.8-pound system installs, and that single fact settles more here than any other row.
weight
Most of this decision is settled at the trunk. The C300 is a 9.1-lb, one-hand pickup you relocate without thinking; the Apex, stacked with its B300K, is 148.8 lb of two-person, bend-the-knees lift you position once and leave. Handles and an optional trolley move it across a garage floor, not up a trailhead.
So if your use case contains the word bring, the C300 is the only one of these two that's even in the conversation. The Apex isn't a heavier portable, it's a different category of object, one that arrives and stays.
Your Life, Your Pick
Selected because: Across six real loads the two units never finish the same one, which is the clearest proof they're built for different jobs.
Run the six standard loads and the C300 finishes none of them; the closest it comes is a CPAP night at 76% before it quits. Drop to a 100Wh afternoon of phones and a speaker, though, and it flips to the obvious pick while the Apex's 5,530Wh sits there as dead weight, not headroom.
The Apex is the mirror image: it finishes everything you plug into it and appears in zero scenarios you'd actually carry it to. Van life is the tell. It clears a full off-grid day with 15 watt-hours to spare, sized to the job almost exactly, and weighs 148.8 lb doing it. Non-overlap is the entire story here.
Lifetime Value
Selected because: The Apex wins on cost per kilowatt-hour, but only if you actually use the watt-hours you're paying for.
cost / lifetime kWh
Fourteen cents a kilowatt-hour against thirty-five makes the Apex look like the thrifty choice, and per watt-hour stored, it is. But you don't buy watt-hours in the abstract; you buy a box for $330 or one for $2,599. The lower rate is only real for someone who cycles energy on the order of the Apex's 19,354 lifetime kilowatt-hours.
If your life needs a couple hundred watt-hours at a time, the C300's higher rate on 864 lifetime kilowatt-hours is still the cheaper way to get exactly what you'll use. The spreadsheet loves the Apex; your actual load is what decides whether the spreadsheet is describing you or a stranger.
Growth Path
Selected because: The C300 is sealed at 288Wh; the Apex expands past 5,530Wh toward whole-home backup.
solar input
The C300 is sealed at 288Wh. That's the whole tank, and there's no adding to it later, which is the difference between a unit sized for a task and a system sized for a building. The Apex starts at 5,530Wh and takes expansion batteries past it, so it can follow you toward partial-home or full-van backup in a way the C300 simply cannot.
Here's the honest catch, though: if 288Wh already covers you, that expansion path is a feature you'd pay the thick end of $2,269 to never touch. Growth room only counts when you're actually going to grow into it.
Strengths & trade-offs
Anker SOLIX C300
Strengths
- +Costs $2,269 less
- +Lighter by 139.7 lb
Trade-offs
- –Weaker inverter (-3,540W) limits appliance compatibility.
- –Sealed capacity — the Apex 300 + B300K can add batteries to grow past 288Wh; this one can't.
- –Shorter-lived battery — rated for 3,000 charge cycles vs the Apex 300 + B300K's 6,000, so it wears out sooner.
BLUETTI Apex 300 + B300K
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Substantially more expensive (+$2,269) than the SOLIX C300.
- –Significantly heavier (+139.7 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 seven 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
Neither unit
Neither gives you a powered weekend: the Apex 300 + B300K has the energy but doesn't travel, and the SOLIX C300 covers about 12% of the 2,100Wh. One can't go; the other can't finish.
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
Apex 300 + B300K
The SOLIX C300 doesn't finish — 245Wh usable against the 1,645Wh this needs leaves it 1,400Wh short, about 15% of the scenario covered. The Apex 300 + B300K covers it with 3,055Wh to spare.
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
Apex 300 + B300K
Neither is a clean medical pick, but only one finishes. The C300 gives out around 76% of an assumed full night, roughly six hours on 245 usable watt-hours, so the machine still running at 3 a.m. is the Apex. Just understand what you're sleeping beside: 148.8 pounds rated at 45dB under load, about as loud as a refrigerator, an arm's length from your head. The Apex is the only one of the two that makes it to morning, just not silently.
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
Apex 300 + B300K
The SOLIX C300 doesn't finish — 245Wh usable against the 910Wh this needs leaves it 665Wh short, about 27% of the scenario covered. The Apex 300 + B300K covers it with 3,790Wh to spare.
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
Neither unit
Neither one throws the tailgate. The Apex has the watt-hours and then some but doesn't travel; the C300 travels but can't hold the day's biggest load, its 600W surge starts a 400W blender, then the 300W continuous rating taps out. If tailgating is the actual use, both are the wrong shape. You want a mid-size portable that starts and sustains 400-plus watts and still carries in one hand.
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
This is the Apex's home turf, and it clears the bar by a whisker: a full off-grid van day covered with 15 watt-hours to spare. That's not comfort, that's exact, one more device and you're planning a recharge. The C300 covers a sliver of the same day and was never in this conversation. If van life is the plan the Apex is right-sized, just remember right-sized here also means 148.8 pounds living in the build.
Battery budget usedlower = more headroom
LOAD Mini-Fridge 150W×24h · Laptop 60W×4h · Phone Charger 15W×3h · LED Lights 40W×5h · Fan 75W×8h
SCN-07 · an afternoon · needs 100Wh
Afternoon Off-Grid
Phones and a speaker at the park, beach, or campsite — the small-unit job description
Either unit
This row is here for the SOLIX C300's class of job: phones and a speaker, 100Wh across an afternoon. Both cover it — the SOLIX C300 finishes at 41% used, and the Apex 300 + B300K barely notices it. For this job the Apex 300 + B300K's extra capacity is dead weight, not headroom; take the SOLIX C300 at 9.1 lbs and leave the rest at home.
Battery budget usedlower = more headroom
LOAD Phone Charger (×2) 30W×2h · Bluetooth Speaker 10W×4h
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 1.2h.
$2,599 list · direct from BLUETTI
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
August 30, 2026
Verdict: the Apex 300 + B300K, on Power Score margin
These aren't two takes on the same product; they're different tools that happen to share a comparison page. The 288Wh, $330 SOLIX C300 is a carry-anywhere unit for phones, a laptop, and small loads across an afternoon. The 5,530Wh, $2,599 Apex 300 with its B300K is a 148.8-lb, set-it-once system that runs appliances and backs up a van or part of a house. Cost per lifetime kilowatt-hour favors the Apex, $0.14 to $0.35, but that only matters if you actually drain thousands of watt-hours; most people cross-shopping these need one or the other, not the more capable one. Buy the C300 if your power travels and your loads are small; buy the Apex if your power stays put and runs real appliances. The one honest warning on the small side: the C300 can't finish an assumed full CPAP night and can't hold a 400W appliance, so it's a lighter-duty unit than its price suggests.
Editor-assigned confidence, based on cited owner research and spec analysis.
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated August 30, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, Home Backup, CPAP, Solar Generator, Tailgating, Food Truck, Apartment Balcony, Camping.
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 C300 rates 4.2/5 (52nd percentile of 22 Personal-class units), and Apex 300 + B300K rates 4.4/5 (67th percentile of 16 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.
148.8 lb, and It Stays Put
This is a two-person, bend-the-knees lift you do once. Handles and an optional trolley are for crossing a garage, not a campground, so decide the Apex's spot before it arrives. The C300, for contrast, is a 9.1-lb, two-finger pickup you'll move without thinking about it.
Apex 300 + B300K: 45dB Published
45dB is about as loud as a running refrigerator. The SOLIX C300 is rated 25dB — 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.
288Wh Is the Whole Tank
The C300 is sealed. 288Wh is what you buy and what you keep, with no adding to it later. For phones, a laptop, and a speaker that's plenty and the fixed ceiling never bites. The trap is buying it as a starter you'll grow into: you can't. If there's a real chance your needs climb toward appliances or backup, that road runs through a system like the Apex, which takes expansion batteries past 5,530Wh, not through the C300.
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. Worth saying because the per-dollar framing can suggest otherwise: the SOLIX C300 works out at 15.2 years of cover per $1,000 spent against the Apex 300 + B300K's 1.9, but that spread is the price gap, not the terms.
Battery Lifespan in Real Years
The Apex 300 + B300K is rated for 6,000 cycles vs 3,000. In real life: at daily use, that's 16.4 vs 8.2 years. At weekend use (twice a week), it's 58 vs 29 years. One caution reading years across different sizes: a cycle is 5,530Wh on the Apex 300 + B300K and 288Wh on the SOLIX C300, so count lifetime energy — roughly 33,178 kWh against 864 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.
Ownership 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 C300 is cheaper to buy, but the Apex 300 + B300K is cheaper to own. At $0.08/kWh over its lifetime vs $0.38/kWh, the Apex 300 + B300K's higher cycle life and capacity make each dollar go further over the years.
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, and Anker's name still carries real trust, but SOLIX-specific support is slipping, with reports of AI-driven agents returning generic answers. On a 9.1-lb unit, at least, a warranty return is an easy mail-back rather than a freight event.
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
Parent-brand reliability and InfiniPower cells rated for long cycle life; Anker's mid-size and larger stations are among the stronger value-per-watt-hour buys in its lineup.
Worth knowing
Firmware updates have removed features without warning before, so it's worth watching release notes rather than assuming the unit you buy stays exactly the unit you own.
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 in the category, heavily email-based with timezone delays, and outcomes swing from smooth to weeks of runaround. Buying direct from BLUETTI tends to go better than routing a claim through a reseller.
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-per-dollar on the market and the widest lineup anywhere, with full LFP across the range and an app tied for best in class.
Worth knowing
Older or discontinued models can become hard to repair, with no spare-parts guarantee on some, which is a real consideration on a $2,599 system you expect to keep for years.
Analyst note
Both apps are excellent, so day to day the software isn't what decides this. Support is, and the stakes scale with the box. A support miss on the $330 C300 is an easy return; the same miss on the 148.8-lb Apex means crating and freight-shipping a heavy battery, so BLUETTI's inconsistency simply costs more because the unit is bigger. Fold that into the price gap, not around it.
Growth path
SOLIX C300
FIXED CAPACITYFixed at 288Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 100W of solar. Limited to a single portable panel.
Adequate ports for most setups, but heavy users may want a power strip.
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
The SOLIX C300 is sealed at 288Wh, which is fine if that covers you. The Apex 300 + B300K starts at 5,530Wh and can grow beyond it with BLUETTI expansion batteries — real headroom the SOLIX C300 doesn't have if your needs climb toward partial-home backup.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
Anker SOLIX C300
Field data on the C300 is thin and reviewer-driven rather than long-term owner mileageA0. What testers flag is consistent: it's impressively light and compact for 288WhA2, and it carries two features unusual at this size and price, dual 140W USB-C ports and a UPS switchover rated at 10ms or better, the latter called genuinely rare in its classA1A3. Nobody's reporting yet how it holds up a year in, so treat the picture as early and positive, not proven.
“288Wh capacity with 300W output (600W with SurgePad) and dual 140W USB-C ports for fast device charging.”
Sources
ankersolix.com · trustedreviews.com · im.com.au · solarwaypoint.com · backuppowerhub.com · powerstationlab.com
BLUETTI Apex 300 + B300K
The Apex plus B300K is new enough that its record is professional-review test units, not seasoned ownersB0. The reviews mostly admire it: one tester says it could genuinely replace a generator without the noise or fumesB4, and hands-on runs had it powering a washer, one wash pulling it from 100% to 65%, then a dryer, with a recharge clocked in under an hourB9B10B12. The steady complaint isn't performance, it's ports. The base Apex has no USB or DC outlets, so you add a roughly $330 Hub D1 to get themB1B2, and the B300K's own USB managed a measly 8W in one testB6. And everyone who lifted it noted the weight, near 150 lb stacked and too much for one personB5B14.
“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
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Compact, light design; dual 140W USB-C fast charging; and a standout 10ms UPS rare at this size are the highlights. [SOLIX C300 · 3 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
“288Wh capacity with 300W output (600W with SurgePad) and dual 140W USB-C ports for fast device charging.”
ankersolix.com / trustedreviews.com — SOLIX C300 review · 2026 · [positive]
- A2
“Anker claims the C300 is 30% smaller than competing power stations; reviewers call it impressively light and compact for the capacity, aimed at keeping phones and gadgets charged on hikes and camping trips.”
im.com.au / solarwaypoint.com — SOLIX C300 review · 2026 · [positive]
- A3
“Its 10ms UPS switchover is legitimately unique in this size and price class.”
backuppowerhub.com / powerstationlab.com — SOLIX C300 review · 2026 · [positive]
- 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 August 30, 2026.
Who Should Buy Which
Buy the SOLIX C300 if you…
- →The car-camper or day-hiker keeping phones, a headlamp, a drone battery, and a Bluetooth speaker topped up across a weekend.
- →Anyone who wants a grab-and-go unit that lives in the trunk and gets carried to the picnic table without a second thought.
- →The laptop-first user who values dual 140W USB-C charging more than wall outlets and never needs to run an appliance.
Buy the Apex 300 + B300K if you…
- →The van-lifer who needs a fixed base station running a fridge and cooking loads through a full off-grid day and can add another battery later.
- →The homeowner who wants partial-home backup that rides out a multi-day outage instead of a single evening.
- →Anyone running real 120V appliances off-grid, a washer, a microwave, power tools, where the 3,840W output and 5,530Wh actually get used.
If neither fits
Anyone whose real need sits between these, a guaranteed CPAP night, a cooler and a fan for a weekend, a few hundred watt-hours you can still lift, is looking at the wrong two boxes. That's the meatiest part of the market: a mid-size portable in the class between a 288Wh carry-unit and a 5,530Wh system finishes an overnight load and still rides in one hand, which neither of these does well. Close the tab and look at the 500-to-1,000Wh tier from Anker, EcoFlow, or Bluetti instead.
The Bottom Line
The choice is made before you reach the spec table: does your power move, or stay put? If it moves, the C300 is the right answer, a nine-pound, carry-anywhere unit for phones, a laptop, and loads that don't run all night. If it stays, the Apex is the right one, appliance-grade backup that happens to weigh as much as two grown adults and never comes along.
Don't let the per-kilowatt-hour math pick for you. The Apex earns its lower rate only by storing energy on a scale the C300 never pretends to, so buy the capacity your life actually cycles, not the number that wins a spreadsheet. Answer the one question honestly and the right box is obvious, and it was never going to be the same box for everyone reading this.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Can the Anker SOLIX C300 run a CPAP all night?
Not a full assumed night at a typical draw. Its 245Wh usable covers about 76% of a 320Wh night, roughly six hours at 40W. That's fine for a short course or a low-draw machine with the humidifier and heated hose off, but if you need a guaranteed full night, size up to a larger unit.
Is the Bluetti Apex 300 actually portable?
Only on paper. Stacked with the B300K it's 148.8 lb, a two-person lift, and effectively stationary; reviewers call it too heavy for most people to carry alone. Handles and a trolley help you reposition it in a garage, but treat it as an installed appliance, not a camping unit.
Why is the Apex cheaper per kWh if it costs $2,599?
Because it stores 5,530Wh against the C300's 288Wh. Spread over its rated life that works out to $0.14 per kilowatt-hour versus the C300's $0.35, but the lower rate only saves money if you actually use thousands of watt-hours. For small loads, the C300's lower sticker wins outright.
What can the SOLIX C300 actually power?
Small continuous loads for a few hours: phones, a laptop over USB-C at up to 140W, a CPAP for part of a night, a mini fridge briefly. Its 300W output with a 600W surge can start a 400W blender but can't hold it, so it's not an appliance or whole-blackout unit.
Do these come with the same warranty?
Both carry a 5-year warranty, so coverage isn't a tiebreaker. Per $1,000 spent the C300 buys 16.7 years of coverage to the Apex's 1.8, but that spread is the price gap, not better terms on the cheaper unit.
Where to buy
Anker SOLIX C300
$329.99
$329.99 · direct from Anker
Last checked 1 day ago. Prices move — check before you buy.
BLUETTI Apex 300 + B300K
$2,599.00
$2,599.00 · direct from BLUETTI
Last checked 1 day ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.