Head-to-head test
Anker SOLIX F3800 PLUS vs BLUETTI Apex 300 + B300K
One of these sells you inverter headroom you'll never reach; the other sells you the energy you'll actually run out of, for $99 more. Buy the energy.
Full profiles: Anker SOLIX F3800 PLUS → · BLUETTI Apex 300 + B300K →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
$2,599.99 · 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
Ninety-nine dollars separates these two, and it buys 44% more energy: 5,530Wh in the BLUETTI stack against 3,840Wh in the Anker, at $2,599 and $2,500. This is the rare pair where the unit with the higher sticker is also the cheaper one.
Anker's answer is muscle. 6,000W continuous and 9,000W surge, against BLUETTI's 3,840W and 7,680W. That's genuine capability, and it's also capability that goes unused in every one of the six load profiles below, all of which both units can start. The gap that does get used is the one in watt-hours, and it settles the hardest profile outright.
So the question isn't which unit is stronger. It's whether you own the load that needs the strength. The profiles that actually run these machines out are long ones, not heavy ones. Two things still point back at the Anker and both are named below rather than buried: it accepts 3,200W of solar to BLUETTI's 2,400W, and that makes it the better foundation for an array you intend to keep growing.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
What does get exercised is the tank. At a 4,685Wh day the Anker needs 144% of its usable bank, which is a polite way of saying it stops before dinner, while the BLUETTI finishes on 4,700Wh usable with fifteen watt-hours left. You're choosing between headroom that stays theoretical and capacity that runs out on a specific Tuesday.
SOLIX F3800 PLUS: 6,000W continuous, 9,000W surgeApex 300 + B300K: 3,840W continuous, 7,680W surgeBoth units can start the peak load in all six modeled scenariosVan Life Daily needs 4,685Wh; usable energy after the 85% derate is 3,264Wh (Anker) and 4,700Wh (BLUETTI)
Why it mattersUnless you own a 240V load that pulls more than 3,840W continuously, you're paying for watts you will never reach.
Spread across the cells' rated life that's 13 cents a kilowatt-hour against 22, with the BLUETTI moving roughly two-thirds more total energy for 4% more money ($99 on $2,500). The unit with the higher sticker is the cheaper one by every measure except the sticker.
Apex 300 + B300K: $2,599, 5,530Wh, 3,500 rated cyclesSOLIX F3800 PLUS: $2,500, 3,840Wh, 3,000 rated cyclesRated lifetime throughput: 19,354kWh vs 11,520kWhBoth carry a 5-year warranty
Why it mattersIf you'll genuinely cycle this thing, in a van, a cabin, or weekly off-grid use, the BLUETTI is the cheap option and the $99 is a rounding error against what it returns.
solar input
Solar input is a growth spec here, not a daily one. Bolt a second battery onto the BLUETTI and 2,400W is suddenly filling a much bigger bank on the same short January day, where Anker's 3,200W leaves 800W of room to grow the array alongside the storage. That's the one axis where buying the smaller battery is the forward-looking move.
SOLIX F3800 PLUS accepts 3,200W of solar; Apex 300 + B300K accepts 2,400WAnker's pack is 3,840Wh; BLUETTI's is 5,530WhBoth units accept expansion batteries
Why it mattersPlanning a cabin array you'll keep expanding? Take the Anker. Buying one unit and one set of panels? Neither ceiling will ever be your problem.
Ten milliseconds against twenty is a distinction a desktop power supply, a router and a CPAP all sleep straight throughA3. The blank where Anker's decibel rating should be is the one that could cost you a night, and the only thing filling it is reviewer impression rather than a number you can check before the pallet arrivesA10A12.
Apex 300 + B300K switches over in 10ms; SOLIX F3800 PLUS in 20msBLUETTI publishes a load noise figure for the Apex stack; Anker publishes none for the F3800 PLUSReviewers describe the F3800 PLUS as background noise under household loads, audible only above 4,000W or at maximum charging speedA10A12In whole-home UPS mode a reviewer saw the lights barely flicker at the 20ms changeoverA3
Why it mattersIf the unit lives in a bedroom or a van you sleep in, that unpublished figure deserves more of your attention than the switchover spec either brand markets.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: The cheaper sticker and the cheaper energy sit on opposite sides of this matchup, and only one of them is what you're actually buying.
cost / lifetime kWh
Both carry five-year warranties and both cost roughly the same per warranty year, $500 for the Anker and $520 for the BLUETTI. That's where the similarity ends. One pack is rated for 3,500 cycles of 5,530Wh and the other for 3,000 cycles of 3,840Wh, and multiplied out, one of them moves roughly two-thirds more energy before its cells are finished.
The honest catch on that math is that lifetime throughput only pays if you cycle it. Park either unit in a garage as blackout insurance and you'll be old before you reach 3,000 cycles; the five-year warranty becomes the real clock and the lifetime-cost gap stops meaning much. What doesn't stop mattering is how many hours you get per outage, and that gap is still 1,690Wh wide (5,530Wh less 3,840Wh) on the first day you own it.
Your Life, Your Pick
Selected because: Five of the six load profiles fit both units comfortably. The sixth is the one that decides the page.
Van Life Daily is the only profile that separates them, and it separates them completely. A 4,685Wh day against the Anker's 3,264Wh of usable energy means shore power or a panel hunt by mid-afternoon, every afternoon. The BLUETTI clears the same day on 4,700Wh usable, by fifteen watt-hours.
Don't read those fifteen watt-hours as margin. Read them as: at a genuinely 4,685Wh day the BLUETTI is running a full discharge every single day and the Anker isn't a candidate at all. If that's really your number, buy the BLUETTI and plan on a second expansion batteryB13 rather than living at the bottom of the pack.
What the Specs Don't Tell You
Selected because: Surge, switchover and noise each split a different way here, and none of them splits the way the spec table's biggest numbers suggest.
rated cycles
The two surge cards disagree with each other and both are right. Anker's 9,000W ceiling is 1,320W higher in absolute terms, and absolute is what a compressor start actually meets. BLUETTI's 7,680W is exactly double its own 3,840W continuous rating, where Anker's ceiling is 1.5 times its 6,000W. Read that ratio as a statement about how conservatively each inverter is rated for continuous duty, not about which one starts the bigger motor.
The noise cards are the more useful pair. BLUETTI puts a decibel figure on its unit under load and Anker puts none on this one, which isn't evidence of a loud machine so much as a spec you can't verify until it's in your house. Reviewers who lived with the Anker say it stays in the background under normal household draw and only announces itself above 4,000W or at full charging speedA10A12, which is reassuring and still isn't a measurement.
Growth Path
Selected because: Both expand. Only one of them can feed the bigger bank you'd be expanding into.
solar input
Anker's clean win on this page is the panel ceiling, 3,200W against 2,400W, and the reason to care about it isn't today. Both units accept expansion batteries, so the question is what happens after you've added one. The bigger the bank, the more the input rate decides whether a short winter day actually refills it.
If the plan is one unit and one array, that ceiling is a spec you will never touch and the BLUETTI's larger pack wins the argument outright. If the plan is a cabin that keeps growing, Anker gives you 800W more room to grow the input alongside the storage. That is a real, specific reason to take the smaller battery, and it's the only one on this page.
Brand Trust
Selected because: You're signing up for a five-year relationship with a support desk, and both of these have a documented split personality.
Both desks have a documented split. Anker's reputation was built on no-hassle replacements, and one Solix owner in a forum thread describes exactly that, advance replacement includedA2. In the same thread another owner with a hardware noise fault says five emails went unanswered after a five-figure spendA1. Same brand, same year, opposite experiences.
BLUETTI's desk is the least consistent in the category, and that's the genuine cost of this pick: you're taking the unit with the better numbers from the brand with the worse odds on the phone. It's email-first with China-timezone delays, and buying direct rather than through a marketplace is the thing most associated with claims that go smoothly. The consolation is the app, rated 4.5 on both stores after its V3.0 redesign, which matters more than it sounds when the alternative is driving home to check on a freezer.
Strengths & trade-offs
Anker SOLIX F3800 PLUS
Strengths
- +Lighter by 16.5 lb
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
- –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
- +Costs $1 less
- +Larger battery capacity
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Significantly heavier (+16.5 lbs), making it harder to move.
- –Weaker inverter (-2,160W) 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
Neither unit
Two nights and 2,100Wh, and both units stroll it. The Apex ends the trip having spent 45% of its usable bank against the Anker's 64%, which only becomes a decision if the weekend stretches to a third night or the weather kills your panels. Then it becomes the whole decision.
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
Eight hours of fridge, lights and phones is half the Anker's usable energy and about a third of the Apex's. Both walk it without drama. The difference shows up on hour nine and on the second night, which is exactly when an outage stops being a novelty.
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 night of CPAP is 320Wh, which neither unit notices: 10% of the Anker's usable energy, 7% of the Apex's. Dead heat on capacity, so break it on the thing eighteen inches from your head. BLUETTI publishes 45dB under load for the Apex stack and Anker publishes no figure at all for the F3800 PLUS. Neither is likely to wake you at this draw, but only one of them will say so in writing.
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
Neither unit
Scoring these two at a tailgate is a category error: neither travels — the SOLIX F3800 PLUS is 132.3 lbs and the Apex 300 + B300K 148.8 lbs, and at those weights they roll off a truck bed if they go anywhere at all. The 670Wh here is trivial for either — it's the going that doesn't happen. If you need power away from the building, you're shopping the wrong class.
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
4,685Wh a day is the profile that ends this matchup. The Anker needs 144% of its usable bank to get through that day, which is another way of saying it doesn't. The Apex finishes on 4,700Wh usable with fifteen watt-hours to spare, a win in the same sense that a photo finish is a win, and if this is genuinely your daily number you should be buying a second expansion battery alongside it rather than running the pack flat every night.
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 15.9h.
$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 9, 2026
Verdict: the Apex 300 + B300K
Take the Apex 300 + B300K at $2,599. For $99 more than the SOLIX F3800 PLUS you get 5,530Wh instead of 3,840Wh, 3,500 rated cycles instead of 3,000, and a bank that clears all six load profiles below, including the daily van draw that leaves the Anker short. Anker's counter is a 6,000W inverter against 3,840W, which is real capability that none of those profiles ever calls on. If you own a 240V load bigger than 3,840W continuous, that single fact outranks everything else here and you should buy the Anker. Two honest costs to the pick: Anker takes 3,200W of solar to BLUETTI's 2,400W, so it's the better base for an array you plan to keep growing, and BLUETTI's support desk is the least consistent in the category. Buy direct and keep the invoice.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of August 9, 2026. The links below open Anker's and BLUETTI's current prices.
$2,599.00 · direct from BLUETTI
Last checked 1 day ago. Prices move — check before you buy.
or check the SOLIX F3800 PLUS price$2,599.99 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated August 9, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): RV Living.
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 F3800 PLUS rates 4.5/5 (73rd percentile of 16 Home Backup-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.
Neither of These Is a One-Person Lift
132 lb for the Anker, 149 for the BLUETTI stack. The 16.5 lb between them is noise: both are cart-or-two-people objects, and neither is going down basement stairs with one person on the low end. Decide where it lives before you order, because you'll move it roughly twice.
Apex 300 + B300K: 45dB Published
45dB is about as loud as a running refrigerator. It is BLUETTI's own rating rather than a reading on a shared bench — makers differ on whether they quote a best case or a figure under load, so treat it as a starting point rather than what you would hear at a bedside. For most people, fan noise around 45dB and up is where sleep starts to suffer.
The Bigger Ceiling and the Better Ratio Are on Different Units
Anker's 9,000W surge is the higher absolute ceiling, and absolute is what a compressor start actually meets. BLUETTI's 7,680W is exactly double its 3,840W continuous rating, where Anker's ceiling is 1.5 times its 6,000W. Read that ratio as a statement about how conservatively each inverter is rated for continuous duty, not about which one starts the bigger motor.
10ms vs 20ms: Real, and Probably Not Yours
The Apex switches over in 10ms against the F3800 PLUS's 20ms. Both sit comfortably inside what a desktop power supply, a router or a CPAP will ride through without blinking. If you own equipment with a documented dropout tolerance tighter than 20ms you already know it, and if you don't, this isn't the spec to pay for.
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.
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 3,840Wh on the SOLIX F3800 PLUS, so count lifetime energy — roughly 33,178 kWh against 11,520 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.
Anker Doesn't Publish a Noise Figure for This One
BLUETTI puts a decibel number on the Apex stack under load. Anker publishes none for the F3800 PLUS, which isn't evidence of a loud machine so much as a spec you can't check until the pallet is in your driveway. If it's going in a bedroom or a van you sleep in, that blank is worth weighing. Anywhere else it's a footnote.
Full record above — the Test Desk pick is the Apex 300 + B300K.
Check Apex 300 + B300K price →or check the SOLIX F3800 PLUS 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 Apex 300 + B300K 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.
Delivers each lifetime kWh for $0.15 less — check the Apex 300 + B300K price →
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
Built on no-hassle replacements and coasting a little. US-based support is still the structural advantage, but SOLIX-specific service quality is trending down, with AI-first responses and awkward return logistics. A unit this heavy ships back as hazmat, which is not a thing you want to learn about mid-claim.
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 parent brand is the asset. Anker's consumer-electronics track record is why people trust a SOLIX box they've never seen in person, and InfiniPower cell packaging is built around long service life. In this specific matchup Anker also brings the higher inverter and the higher solar ceiling.
Worth knowing
Firmware updates have removed features without warning, and the expansion ecosystem is smaller than EcoFlow's. Neither is disqualifying at this size; both are worth knowing before you commit to the platform rather than the product.
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 least consistent desk in the category, and that's the honest cost of recommending this unit. Email-first with China-timezone delays, and buying direct from BLUETTI rather than through a marketplace is the single thing most associated with a claim that resolves quickly. Some claim routes end in a discount on a new unit rather than a repair.
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
Some of the lowest cost per watt-hour in the category, and this bundle is the proof: 47 cents a watt-hour against the Anker's 68. The catalogue is also the broadest in the business, from a budget AC2A up through this stack, including sodium-ion cold-weather units and vehicle solar hubs nobody else bothers to build.
Worth knowing
Discontinued BLUETTI models can hit a spare-parts wall, so the safest buy is something the lineup still actively sells. The Apex sits at the top of the current portable range, which is the right side of that line to be on.
Analyst note
Anker asks you to trust a brand slipping from an excellent baseline; BLUETTI asks you to accept a desk that was never consistent to start with. Neither is a reason to change your pick. Both carry the same five-year warranty and both apps score 4.5 on iOS. It is a reason to buy direct from whichever one you choose, and to file the invoice somewhere you can still find it in year four.
Growth path
SOLIX F3800 PLUS
EXPANDABLESupports Anker expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 3,840Wh.
Accepts up to 3,200W of solar. Enough for a serious multi-panel array.
Generous port selection supports complex multi-device setups.
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, but the SOLIX F3800 PLUS's higher solar ceiling (3,200W vs 2,400W) 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 F3800 PLUS
Field data on the F3800 PLUS specifically is thin, and what exists comes from reviewers with test units rather than long-term ownersA7A13. The most useful numbers in it are runtime: a fridge and freezer running together emptied the base unit in just over seven hours, while lighter household loads with a laptop and an e-bike charge stretched toward 17A4A5. That's the same unit, and the spread between those two days is the whole reason capacity is the argument on this page.
On noise, reviewers describe it as unobtrusive under normal loads and only clearly audible past 4,000W or at maximum charge speedA10A12, and one saw only a flicker when it took over the house at its 20ms changeoverA3. Two cautions. An early complaint about standby drain was reportedly addressed by a firmware update, but that claim couldn't be cross-checked against a second sourceA9, so treat it as unconfirmed. And the wheels manage grass but stall on small bumpsA8, which is consistent with the aggregated feedback flagging portability as the recurring gripe even where performance is praisedA14.
“I've called them and submitted tickets via their portal, always very responsive. They've even done advanced replacement for me.”
Sources
campingsolar.us · cleanenergybusinesscouncil.com
BLUETTI Apex 300 + B300K
This bundle is new enough that the ledger is early-adopter reviewers rather than owners, so read it as first impressionsB4B12. The best of it is load testing: one tester ran a washing machine cycle that took the Apex from 100% to 65% in an hour, then added a heat-pump dryer that pulled it to 20% over the next hour and a halfB9B10. Recharge came back the other way, described as under an hour to a system ready to go againB12. One reviewer called it the rare setup that could genuinely stand in for a generator, minus the noise and fumesB4.
The recurring complaint is ports, and it's worth knowing before you order. Reviewers describe the Apex 300 itself as six AC outlets and high-voltage connectors with little else, with USB and DC handled by BLUETTI's separate D1 hub at about $300, which more than one found steepB1B2. Another got only 8W out of the B300K's own port and found the app wouldn't display its percentageB7B6. On weight, testers put the stack near 150 pounds and are blunt that it isn't a one-person carryB5B14.
“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
- Owner support experiences with Anker/Solix diverge sharply — some report being ghosted after repeated contact attempts over a hardware fault, while others describe fast, responsive advanced-replacement service. [SOLIX F3800 PLUS · 2 entries]
- Real-world runtime drops off steeply with load: light loads (lights, router, occasional laptop/e-bike charging) stretch toward the ~17-hour mark, but running a fridge and freezer together drains the base unit in around 7 hours. [SOLIX F3800 PLUS · 2 entries]
- Fan noise is reported as low/background during normal household loads and only becomes noticeably audible under heavy loads (4,000W+) or max-speed charging. [SOLIX F3800 PLUS · 2 entries]
- The unit's near-137 lb weight is a recurring friction point: reviewers note the wheels/handles work for moderate use but struggle over rough terrain, and aggregated user feedback flags portability and packaging as concerns despite praise for raw performance. [SOLIX F3800 PLUS · 2 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
“I think it may be a fire hazard with this crazy noise it's making. I have emailed Anker support over 5 times... Anker support is ghosting me after I spent over 20k on their solix line and solar panels within a month.”
DIY Solar Forum — "Big issue with Anker Solix F3800 plus battery pack (Large Anker Solix setup)" · 2025-08 · [negative]
- A2
“I've called them and submitted tickets via their portal, always very responsive. They've even done advanced replacement for me.”
DIY Solar Forum — "Big issue with Anker Solix F3800 plus battery pack (Large Anker Solix setup)" (reply from another Solix owner) · 2025-08 · [positive]
- A3
“In UPS mode, the F3800 Plus can switch in about 20ms. There's more cabling and components when connected to the whole home setup, but the lights still barely flicker.”
Android Authority — "Anker SOLIX F3800 Plus with Home Power Panel review: Total power backup" · 2025-05 · [positive]
- A4
“You would be able to keep a fridge or freezer running, charge a few laptops or phones, maybe charge up an e-Bike and the F3800 Plus base unit would last about 17 hours before needing a recharge.”
Digital Trends — "Anker Solix F3800 Plus review: this power station wins for versatility and value" · 2025-05 · [positive]
- A5
“With both the freezer and my fridge plugged in at the same time, I was about to get 7.34 hours before the unit was completely drained.”
Digital Trends — "Anker Solix F3800 Plus review: this power station wins for versatility and value" · 2025-05 · [mixed]
- A7
“After a few months with its successor, I can easily say it is a repeat success.”
AppleInsider — "Anker Solix F3800 Plus portable power station review: investment in reliable home power" · 2025-08 · [positive]
- A8
“The big wheels in the back are enough to go over grassy terrain, but avoid anything too challenging. Small bumps can be enough to slam everything to a halt.”
AppleInsider — "Anker Solix F3800 Plus portable power station review: investment in reliable home power" · 2025-08 · [mixed]
- A9
“Early reviews focused heavily on the standby drain of the Anker SOLIX F3800 Plus. Anker later released a firmware update that said it can cut idle use by about 50%.”
VoltNest — "Anker SOLIX F3800 Plus Review: My Honest Test Results" · 2026-04 · [mixed]
- A10
“Under normal loads (lights, fridge, TV), the fans are barely audible. It only gets loud when you're pulling over 4,000W or charging at max speed.”
CampingSolar.us — "Anker SOLIX F3800 Plus Review: The Ultimate 240V Home & RV Power" · 2026-02 · [positive]
- A12
“It doesn't match the whisper-quiet performance of the EcoFlow Delta Pro Ultra, which remains one of the quietest power stations we've ever tested, but the F3800 Plus is still surprisingly quiet, even when you're really pushing it.”
TheSolarLab — "Anker SOLIX F3800 Plus Review: Big Power, Big Price?" · unknown · [positive]
- A13
“Setting it up was surprisingly easy... Within minutes, I could see everything on the Anker app—charging input, battery percentage, power usage by device.”
ProudHomemaker — "Is the Anker SOLIX F3800 Plus Worth It? Here's What You Need to Know" · 2025-05 · [positive]
- A14
“Overall, feedback indicates a mixed experience. Customers appreciate its robust performance but express concerns about portability and packaging.”
CleanEnergyBusinessCouncil.com — "Anker SOLIX F3800 Plus Review: Power Unleashed" (site's summary of user feedback) · 2025-08 · [mixed]
- 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]
- B7
“It did not even show the percentage on the app but only that there was a DC output flow and indeed my tablet was charging.”
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]
- B13
“For van lifers, the Apex 300 is a great base station, and the ability to add another 2.7kWh of capacity by simply purchasing another B300K expansion pack is a game-changer.”
cleantechnica.com — The Bluetti Apex 300 & B300K Portable Power Station Tested · 2025-08-05 · [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 9, 2026.
Who Should Buy Which
Buy the SOLIX F3800 PLUS if you…
- →You own a 240V load that pulls more than 3,840W continuously, an electric dryer and a well pump both wanting to run at the same moment. Anker's 6,000W inverter is the only one here that covers it, and no amount of extra battery on the other side fixes that.
- →You're building an off-grid array in stages. 3,200W of solar input against 2,400W is 800W more room to grow the panels alongside the batteries, and it's the one spec on this page where buying the smaller pack is the long game.
- →You want the higher absolute surge ceiling for one big motor start. 9,000W is 9,000W, whatever the ratio says about it.
Buy the Apex 300 + B300K if you…
- →You'll actually cycle it. Van, cabin, boat, weekly off-grid. 5,530Wh across 3,500 rated cycles is the cheapest energy on this page, and cheap energy only pays when the energy moves.
- →You want more hours per outage rather than more watts per moment. Every profile that fits the Anker fits the BLUETTI with more left over, and the one that doesn't fit the Anker fits the BLUETTI.
- →You'll be checking on it from somewhere else. BLUETTI's app is rated 4.5 on both stores after the V3.0 redesign, which is the thing you'll touch weekly long after you've forgotten the surge specs.
If neither fits
If what you actually want is a fridge and some phones through one storm evening, close this tab. Both of these are 130-plus-pound, $2,500-and-up machines built for whole-home 240V backup and daily off-grid cycling, and you'll move either one about twice in its life. A much smaller unit costs a fraction of this, weighs a fraction of this, and you can carry it to the car by yourself. Buy at this size when you have a load that needs it, not in anticipation of one.
The Bottom Line
Take the Apex 300 + B300K. Across six load profiles the Anker's bigger inverter never once gets to prove itself, while the BLUETTI's bigger bank settles the hardest profile outright and leaves more in reserve on the other five. That's the case, and $99 is what it costs.
Two things would change it. If you have a 240V load above 3,840W continuous, the Anker is the only one of these that can run it and nothing above matters. If you're building an array you intend to keep growing, Anker's 3,200W panel ceiling is the better foundation. Everyone else: buy the bigger battery, buy it direct, and put it where you want it to live, because you won't enjoy moving it twice.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the BLUETTI Apex 300 + B300K worth $99 more than the Anker SOLIX F3800 PLUS?
Yes, for almost everyone. That $99 gets you 5,530Wh instead of 3,840Wh from a pack rated for 3,500 cycles instead of 3,000, so it's more energy today and cheaper energy across the life of the cells. Skip the trade only if you need more than 3,840W of continuous output, which the Anker's 6,000W inverter delivers and the BLUETTI's doesn't.
Which one can run more at once?
The Anker, by a wide margin: 6,000W continuous with a 9,000W surge, against 3,840W continuous and 7,680W surge. In practice that gap only shows up when you're trying to run several large 240V appliances simultaneously. For one big load at a time, both have room to spare, and the BLUETTI's surge ceiling is double its own continuous rating rather than 1.5 times it.
Which is better for van life?
The BLUETTI, and the numbers aren't close. A 4,685Wh daily draw empties the Anker before the day is over and the BLUETTI finishes it. Reviewers testing the Apex called it a genuine generator replacement and pointed to a second expansion battery as the easy way to add headroom. Both weigh well over 130 lb, so whichever you choose isn't coming back out of the van casually. Pick the spot before you install.
How long will each run a fridge during a blackout?
The modeled eight-hour blackout profile of fridge, lights and phones needs 1,645Wh, which is half the Anker's usable bank and about a third of the BLUETTI's. Reviewers running an actual fridge and freezer pair off the Anker's base unit drained it in just over seven hours, while lighter loads stretched toward 17. The BLUETTI's larger bank buys you the same behaviour for longer, not different behaviour.
Where to buy
Anker SOLIX F3800 PLUS
$2,599.99
$2,599.99 · direct from Anker
Last checked 1 day ago. Prices move — check before you buy.
BLUETTI Apex 300 + B300KPick
$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.