Head-to-head test
Anker SOLIX F3800 PLUS vs BLUETTI Apex 300 + B300K
For the same money, Anker sells inverter headroom that none of the six load profiles ever touches and BLUETTI sells 44% more battery on a pack rated for twice the cycles. The battery is the thing you actually run out of, so buy the battery.
Full profiles: Anker SOLIX F3800 PLUS → · BLUETTI Apex 300 + B300K →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Priced within $1 of each other, the SOLIX F3800 PLUS and the Apex 300 + B300K spend your money on opposite things: Anker on a 6,000W inverter, BLUETTI on 5,530Wh of battery. Take the battery.
BLUETTI's side is 44% more energy (5,530Wh against 3,840Wh), a pack rated for 6,000 cycles against 3,000, and a ≤10ms switchover rating against ≤20ms. Anker's side is muscle and plumbing: 6,000W continuous and 9,000W surge against 3,840W and 7,680W, 3,200W of solar input against 2,400W, nine AC outlets to six, and USB and 12V outputs on the unit itself, where the Apex routes both through BLUETTI's separately sold Hub D1B1B2.
The muscle is real, and none of the six load profiles below ever calls on it. The heaviest peak among them is 400W. The battery gets called on twice: after one modeled blackout night the BLUETTI still holds nearly two more while the Anker holds just under one, and only the BLUETTI finishes the van-life day. So the question isn't which unit is stronger. It's whether you own a load bigger than 3,840W.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
The tank is. On a 4,685Wh van day the Anker comes up 1,421Wh short and covers about 69% of it, while the BLUETTI finishes with 15Wh to spare. One unit's advantage stays on the spec sheet. The other's shows up at four in the afternoon when the fridge is still running.
SOLIX F3800 PLUS: 6,000W continuous, 9,000W surgeApex 300 + B300K: 3,840W continuous, 7,680W surgeHeaviest peak across the six modeled scenarios: 400W (Tailgate Party); both units start every peakVan Life Daily needs 4,685Wh; usable after the flat 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, the Anker's extra inverter is capability you pay for in battery you don't get.
rated cycles
With the two priced within $1, that ratio is the entire lifetime-cost story, because there's no price difference to argue it down. The catch is that throughput only pays when energy moves. A unit waiting in the garage for storms will reach the end of its five-year warranty long before either cycle count, and for that buyer the bigger tank per outage is what counts, not the lifetime kilowatt-hours.
Apex 300 + B300K: 5,530Wh, rated for 6,000 cyclesSOLIX F3800 PLUS: 3,840Wh, rated for 3,000 cyclesRated lifetime throughput: 33,178kWh vs 11,520kWhDaily use to the rated cycle count: 16.4 years vs 8.2 years
Why it mattersDaily cyclers in a van, a cabin or an off-grid shed can treat this as settled; storm-insurance buyers get there by a different road and land in the same place.
So under any load both units can carry, the Anker sits in the range reviewers call barely audible, as long as it isn't fast-charging at the same timeA10A12. The blank where its decibel figure should be looks worse on the spec table than it's likely to sound in the room. The switchover gap is the one that's real: ≤10ms is the safer rated class for a desktop PC, while a reviewer running the Anker into a whole-home panel saw the lights barely flicker at changeoverA3, which is the right result for a house and says nothing about a workstation.
Anker publishes no noise figure for the F3800 PLUS; BLUETTI publishes its own 45dB figure for the Apex stackReviewers describe the F3800 PLUS fans as barely audible under normal household loads and loud only above 4,000W or at maximum charging speedA10A12Apex 300 + B300K inverter: 3,840W continuousSwitchover ratings: ≤10ms (BLUETTI) vs ≤20ms (Anker)
Why it mattersBedroom and van-sleeper buyers shouldn't let the missing noise spec decide this; anyone protecting a desktop with unsaved work should count the switchover rating as a point to the BLUETTI.
solar input
It decides things later. Add a battery to either and the same short winter day suddenly has a bigger bank to fill, and the Anker brings 800W more input to that job. That's a genuine reason to take the smaller pack, and it only applies to someone who already knows the array is going to grow.
SOLIX F3800 PLUS accepts 3,200W of solar; Apex 300 + B300K accepts 2,400WPack sizes: 3,840Wh vs 5,530WhBoth accept expansion batteriesA reviewer confirms the 3,200W input works with standard MC4 panelsA11
Why it mattersBuilding a cabin system in stages? The Anker. Buying one unit and one set of panels? Neither ceiling will ever be your problem, and the bigger battery wins.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: Two rows go to the BLUETTI on stored energy, and none of the six ever asks for the Anker's extra inverter.
Two rows go to the BLUETTI, two are dead heats, and two come back 'neither' because at 132.3 and 148.8 lb nothing here goes camping or tailgating. The blackout row is the one to read slowly. After one modeled night the Anker holds 1,619Wh, just short of a second; the Apex holds 3,055Wh, nearly two more. Outages don't end when the forecast says they will, and that second night is where the difference lives.
Van Life Daily is the only row that separates them outright. The Anker covers about 69% of a 4,685Wh day and the Apex finishes with 15Wh left, which is a pass the way coasting into your driveway on fumes is a pass. If that's genuinely your daily number, plan on a second B300K from day one, which one van-focused review points to as the easy upgradeB13. And budget for the Hub D1 as well: the Apex's USB and 12V outputs live on that separately sold hub, about $300 by one reviewer's count, not on the unitB1B2.
Lifetime Value
Selected because: Twice the cycle rating on a bigger pack is the widest gap between these two, and it compounds every time you cycle.
cost / lifetime kWh
Same sticker within $1, and the BLUETTI is rated to move nearly three times the energy before its cells reach their rated count. There's no price difference to argue that ratio down. Used daily, it's 16.4 years of rated cycling against 8.2.
The honest catch: none of that pays unless the energy moves. At weekly use the Anker's rated cycles last 57.7 years and the BLUETTI's 115.4, two numbers that describe nobody's ownership. For a unit that waits in the garage for storms, the five-year warranty is the real clock, and the gap that still matters on day one is 1,690Wh more battery per outage (5,530Wh less 3,840Wh).
What the Specs Don't Tell You
Selected because: Surge goes to the Anker; switchover and noise disclosure go to the BLUETTI. Only one of those starts motors.
rated cycles
Surge goes to the Anker and the ratio goes to the BLUETTI, and only one of those starts motors. 9,000W against 7,680W is the number a compressor meets at switch-on, so the Anker is the stronger starter by 1,320W. The BLUETTI's 2x against 1.5x says its inverter runs further below its own peak, which is headroom, not starting power. Nothing in the six profiles comes near either ceiling.
Switchover runs the other way. The Apex is rated ≤10ms, the class desktop PCs should ride through; the Anker is rated ≤20ms, fine for routers and most electronics, with the fussiest PC power supplies sitting right on that line. If a workstation with unsaved work is what you're protecting, that's the one card here that should move you.
Growth Path
Selected because: Both expand, and only one has the solar input to keep a growing bank fed.
solar input
This is the Anker's cleanest win: 3,200W of solar input to 2,400W, on standard MC4 panelsA11. Both units take expansion batteries, and the bigger the bank grows, 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'll never touch and the BLUETTI's bigger pack carries the argument. If the plan is a cabin that keeps growing, the Anker's 800W of extra input is the room you'll grow into. Along with a 240V load above 3,840W, it's one of only two reasons on this page to take the smaller battery.
Brand Trust
Selected because: A five-year term means five years with a support desk, and both of these desks have a documented split.
Both desks have a documented split personality. Anker's is US-based and was built on no-hassle replacements, but our brand file has SOLIX support trending down, with AI-first replies and awkward hazmat return logistics for units this heavy. One F3800 PLUS owner reports five unanswered emails over a hardware noise fault after spending over 20k on the SOLIX lineA1; a reply in the same thread describes fast advance replacement, though that owner's unit may not be a PLUSA2A0.
BLUETTI's desk is the least consistent in our brand file: email-first, China-timezone delays, and some claims that end in a discount on a new unit instead of a repair. That's the genuine cost of this pick. Buying direct is the one thing tied to smoother outcomes, and on this record it's also what secures the full five-year term, so the same advice covers both problems. The consolation is an app rated 4.5 on both stores.
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
- +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
Neither, and not because 2,100Wh is hard: it's 64% of the Anker's usable bank and 45% of the Apex's. It's that at 132.3 and 148.8 lb these don't go camping. They roll off a truck bed, if they go anywhere. If the campsite is the job, you're shopping the wrong class.
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
Both get through the night; the Apex wins on what's left. The Anker ends at 50% used with 1,619Wh in hand, just short of a second night. The Apex ends at 35% with 3,055Wh, nearly two more. Outages don't end when the forecast says, which is why that margin is the whole point of this row.
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 320Wh night is 10% of the Anker's usable energy and 7% of the Apex's, so capacity decides nothing. Break it on the fan eighteen inches from your head: BLUETTI publishes a 45dB figure of its own, without saying whether that's a quiet-mode floor or a reading under load, and Anker publishes nothing. A dead heat, with one maker willing to put a number on it.
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
910Wh of laptop and monitor is 28% of the Anker's usable bank and 19% of the Apex's. Both cruise it. If you need a tiebreak, the Anker has nine AC outlets to the Apex's six, which matters only if your desk is a power-strip situation.
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. 670Wh is 21% of the Anker's usable bank and 14% of the Apex's, so energy isn't the problem. The 132.3 and 148.8 lb are. A tailgate wants a box you carry from the trunk; these want a ramp.
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 row that decides the page. A 4,685Wh day leaves the Anker 1,421Wh short, covering about 69% of it. The Apex finishes with 15Wh left, a pass the way coasting home on fumes is a pass. Two catches before you install it: running the pack flat daily means planning on a second B300K, and the Apex's USB and 12V outputs come only with BLUETTI's separately sold Hub D1.
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
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 11, 2026
Verdict: the Apex 300 + B300K
Take the Apex 300 + B300K. At $2,599 against the Anker's $2,600 it carries 44% more energy (5,530Wh to 3,840Wh), a pack rated for 6,000 cycles to 3,000, and the tighter switchover rating, ≤10ms to ≤20ms. It wins the blackout row on what's left in reserve and is the only one of the two that finishes the van-life day. The Anker's 6,000W inverter is the reason to go the other way, but only if you own a 240V load that pulls more than 3,840W continuously; its 3,200W solar ceiling is the second reason, for an array you know will keep growing. The cost of the pick is the support desk: BLUETTI's is the least consistent in the category, and its five-year term depends on buying direct or registering. Buy direct and keep the invoice.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of October 11, 2026. The links below open Anker's and BLUETTI's current prices.
$2,599.00 · direct from BLUETTI
Last checked 28 days 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 October 11, 2026
Black Friday · 26 days out
Prices to beat:SOLIX F3800 PLUS $2,300Apex 300 + B300K $2,364
The lowest we have recorded for each. A Black Friday price above it is a sale that unit has already had.
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 4.4/5 (63rd percentile of 20 Home Backup-class units), and Apex 300 + B300K rates 4.2/5 (53rd 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.
Two-Person Objects, Both of Them
132.3 lb in one box for the Anker; 148.8 lb for the BLUETTI, split between the Apex and the B300K so no single lift is the whole stack. The 16.5 lb gap matters less than that split: the Anker is one heavy thing on wheels, the BLUETTI two heavy things that stack. Pick the spot before delivery, because neither gets moved on a whim.
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.
Apex 300 + B300K: Power Lifting to 7,680W
The Apex 300 + B300K has BLUETTI's Power Lifting mode, which runs a resistive appliance rated up to 7,680W from its 3,840W inverter. It does that by delivering less power than the appliance asks for, not more than the inverter has: the heater still works, it just heats more slowly. Two things follow. BLUETTI scopes the mode to purely resistive loads — a heater, a kettle, an incandescent lamp — so it does nothing for a fridge compressor, a pump or a power tool, and this record publishes no surge figure at all, so read the mode as a resistive-load feature rather than as starting ability. And it is not a reason to size down, because running a load that big from 5,530Wh is a short session either way. Genuinely useful if a heater or a kettle is why you're buying; beside the point otherwise. The SOLIX F3800 PLUS publishes no equivalent.
≤10ms vs ≤20ms: It Comes Down to the PC
Both are ratings, not measurements. ≤10ms is the class desktop PCs and routers should ride through; ≤20ms is fine for routers and most electronics, with the fussiest PC power supplies right at that line. If a computer with unsaved work is on the UPS outlet, that's a point to the BLUETTI. If it's lights and a fridge, it isn't a point to anyone.
Five Years Each, on Different Terms
The Anker's five years is stated plainly on our record. BLUETTI's five is the ceiling: it applies when you buy direct from BLUETTI or register the unit, and reseller purchases carry a shorter term. Same number, so it isn't a tiebreaker, but it is one more reason to buy the Apex direct.
Twice the Cycles, Nearly Three Times the Energy
6,000 rated cycles against 3,000, and each BLUETTI cycle is 5,530Wh to the Anker's 3,840Wh, so rated lifetime throughput comes to roughly 33,178kWh against 11,520kWh. Used daily, that's 16.4 years against 8.2. Both ratings are minimums, and a pack at its rated count drops to about 80% of its capacity rather than dying.
Anker's Blank Noise Spec, Read Carefully
Anker publishes no noise figure for the F3800 PLUS. BLUETTI publishes 45dB for the Apex stack, its own rating, with no word on whether that's a floor or a load reading. A blank isn't evidence of a loud machine. It's a reason to find hands-on reports before the unit goes in a bedroom or a van you sleep in.
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
US-based, and historically the no-hassle-replacement brand. SOLIX support is trending down, with AI-first replies and complicated returns for heavy units, which ship back as hazmat. Not something to discover mid-claim on a 132.3 lb box.
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 record is why people trust a SOLIX box they've never seen in person. In this matchup it also brings the bigger inverter, the higher solar ceiling and the fuller socket panel.
Worth knowing
Firmware updates have removed features without warning, and the expansion ecosystem is smaller than EcoFlow's. Neither disqualifies a unit 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 the honest cost of recommending this unit. Email-first with China-timezone delays, and some claims end in a discount on a new unit rather than a repair. Buying direct from BLUETTI is the single thing most associated with claims that go smoothly.
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 best capacity-for-the-money ratios in the catalogue, and the broadest lineup in the business, from the budget AC2A up to this stack, including sodium-ion cold-weather units and vehicle solar hubs. Cycle ratings vary model to model across the range; this one is rated for 6,000.
Worth knowing
Discontinued BLUETTI models can hit a spare-parts wall, so the safer buy is one the lineup still actively sells. The Apex 300 sits at the top of the current portable range, which is the right side of that line.
Analyst note
Anker asks you to trust a desk slipping from an excellent baseline; BLUETTI asks you to accept one that was never consistent. Neither changes the pick, and both point to the same habit: buy direct from the maker and file the invoice where you'll find it in year four. Both apps score 4.5 on iOS.
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.
Limited ports. You'll likely need a power strip or splitter.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the 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 is thin, and our research found it comes mostly from reviewers who lived with test units for weeks or months rather than from long-term ownersA0A7. The most useful thing in it is how steeply runtime depends on load. One reviewer ran a fridge and freezer together and drained the base unit in a little over seven hours, then estimated about 17 hours for a fridge, a few laptops and an e-bike chargeA5A4. Same box, two very different days, and that spread is the battery argument this page turns on. The same reviewer emptied the whole pack into a Rivian for about 5 miles of range and called EV charging gimmicky, which is fairA6.
On noise, reviewers describe fans that are barely audible under lights, fridge and TV and loud only past 4,000W or at maximum charging speedA10, with one calling it surprisingly quiet even when pushed hard, if not as quiet as EcoFlow's Delta Pro UltraA12. In whole-home UPS mode one saw the lights barely flicker at changeoverA3. Three cautions. Anker says a firmware update cut idle draw by about 50%, a claim our research couldn't cross-check against a second sourceA9A0. The rear wheels handle grass and stall on small bumpsA8. And portability is 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
The Apex 300 + B300K is new enough that what exists is early-adopter reviewing, not long-term ownership, and no owner threads on this exact bundle turned upB0. The load testing is the good part: 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. Another had it recharged and ready again in under an hourB12, and one called it one of the few systems that could genuinely replace a generator, without the noise or fumesB4.
The recurring complaint is ports. Reviewers describe the Apex 300 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 one found steepB1B2. Another got only 8W out of the B300K's own port into a phone, and the app wouldn't show the battery's percentageB6B7. The USB-C and USB-A figures in our spec table belong to that Hub D1, not to the Apex itself, so price the hub in if you need USB or 12VB1B2. On weight, reviewers put the stack near 150 pounds and say the Apex alone is too heavy for most people to carry by themselvesB5B14.
“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
- 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]
- A6
“With my Rivian R1S, I was able to get about 5 miles of charge out of the F3800 Plus – fully drained... Charging an EV with the Solix F3800 Plus is gimmicky in my opinion.”
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]
- A11
“Anker really addressed this issue with the F3800 Plus. You now get a true 3,200W solar input, which is compatible with normal MC4 solar panels.”
TheSolarLab — "Anker SOLIX F3800 Plus Review: Big Power, Big Price?" · unknown · [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]
- 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 October 11, 2026.
Who Should Buy Which
Buy the SOLIX F3800 PLUS if you…
- →Your house has a 240V load that pulls more than 3,840W continuously, say a well pump and an electric dryer that want the same minute. The Anker's 6,000W inverter covers it, and no amount of battery on the other side does.
- →You're building an off-grid array in stages. 3,200W of solar input against 2,400W is room to grow panels alongside batteries, and it's the forward-looking reason to take the smaller pack.
- →You want everything on the box itself: nine AC outlets, two 240V outlets, plus USB and a 12V car socket built in, where the Apex has six AC outlets, one 240V outlet, and puts USB and DC on a separately sold Hub D1B1B2.
Buy the Apex 300 + B300K if you…
- →You want the second night of an outage covered. After one modeled blackout night the Apex still holds nearly two more; the Anker holds just under one.
- →You'll cycle it hard: a van, a cabin, off-grid weekends every week. Twice the rated cycles on a bigger pack means nearly three times the lifetime energy for the same money.
- →A desktop PC or a network rack lives on the UPS outlet. ≤10ms is the safer rated class, and the BLUETTI is the one that carries it.
If neither fits
If your power has to travel, close this tab: at 132.3 and 148.8 lb, neither goes camping or tailgating, which is why both of those rows above come back 'neither'. Same if what you want is a fridge and some phones through one storm evening. A smaller portable you can carry to the car yourself costs a fraction of this. Buy at this size for a load you already have, not one you might.
The Bottom Line
Take the Apex 300 + B300K. For the same money it carries 44% more energy on a pack rated for twice the cycles, and across six load profiles the Anker's bigger inverter never gets a turn while the BLUETTI's bigger bank wins the blackout row and finishes the van day alone.
Two things flip it: a 240V load above 3,840W continuous, or a solar array you mean to grow past 2,400W. Own either and buy the Anker. Everyone else, buy the bigger battery, buy it direct, and pick the spot it'll live in before the pallet arrives.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Anker SOLIX F3800 PLUS or BLUETTI Apex 300 + B300K: which is better for home backup?
The BLUETTI, for most homes. After the modeled eight-hour blackout it still holds 3,055Wh, nearly two more nights, while the Anker holds 1,619Wh, just short of one. Pick the Anker only if you run a 240V load, or a combination of loads, that pulls more than 3,840W continuously; its 6,000W inverter covers that and the BLUETTI's can't.
Which one can run more appliances at once?
The Anker: 6,000W continuous and 9,000W surge against the BLUETTI's 3,840W and 7,680W. That gap shows up only when several big 240V appliances run at the same moment. It also has more sockets, with nine AC outlets and two 240V outlets to the BLUETTI's six and one, and its USB and 12V ports are on the unit, where the Apex needs the separately sold Hub D1 for those.
Is the Anker SOLIX F3800 PLUS loud?
Anker doesn't publish a noise figure, so there's no number to quote. Reviewers describe the fans as barely audible under lights, a fridge and a TV, and loud only above 4,000W or at maximum charging speed. Since the BLUETTI tops out at 3,840W, any load both units can run keeps the Anker below that loud zone, unless it's fast-charging at the same time.
Which is better for van life, the F3800 PLUS or the Apex 300 + B300K?
The BLUETTI. A 4,685Wh daily draw leaves the Anker 1,421Wh short, while the Apex finishes with 15Wh left, so plan on a second B300K if that's your real number, which one van-focused review points to as the easy upgrade. Two cautions: the Apex's USB and 12V outputs need the separately sold Hub D1, and at 148.8 lb across two boxes it goes in once and stays.
How long will the batteries last?
The BLUETTI is rated for 6,000 cycles and the Anker for 3,000, and both ratings are minimums. Used daily, that's 16.4 years against 8.2, and because each BLUETTI cycle is also the bigger one, it's rated to deliver nearly three times the lifetime energy. Both carry a five-year warranty, though BLUETTI's full term depends on buying direct or registering.
Where to buy
Anker SOLIX F3800 PLUS
$2,599.99
$2,599.99 · direct from Anker
Last checked 28 days ago. Prices move — check before you buy.
BLUETTI Apex 300 + B300KPick
$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.