Head-to-head test
Anker SOLIX F3800 vs BLUETTI Apex 300 + B300K
The F3800's inverter pushes 6,000W continuous against the Apex's 3,840W — 2,160W more headroom for the one big appliance that trips a smaller inverter — but everyone not running that appliance should buy on the Apex's $0.10-cheaper lifetime cost per kWh instead.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Anker
SOLIX F3800
6,237Power Score · The AC & Fridge Zone
$1,999.99 list · direct from Anker
BLUETTI
Apex 300 + B300K
6,552Power Score · The AC & Fridge Zone
$2,599.00 list · direct from BLUETTI
Spec deltas
The Anker SOLIX F3800 outputs 6,000W continuous with a 9,000W surge ceiling; the BLUETTI Apex 300 + B300K tops out at 3,840W continuous and 7,680W surge. That's the one spec where the Anker is unambiguously the bigger machine.
Almost everything else favors the Bluetti. It costs $100 less ($2,599 vs $2,699), holds 1,689.6Wh more energy (5,529.6Wh vs 3,840Wh), and its lifetime cost per kWh comes in at $0.13 against the Anker's $0.23 — nearly double. It also switches over from grid to battery in 10ms instead of 20ms, which matters if anything on that circuit doesn't like a power blip.
So the decision isn't close for most buyers, but it isn't a clean sweep either. If your one deciding appliance draws more than the Apex's inverter can push, the Bluetti's cheaper energy is irrelevant — it simply can't run the thing.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
continuous output
The Apex's extra 16.5 lbs isn't buying a bigger inverter — it's buying more battery cells for its 5,529.6Wh pack. Two power stations of similar size are built for different jobs: one prioritizes raw wattage per pound, the other prioritizes stored energy per pound.
F3800 continuous output is 6,000W with a 9,000W surge ceilingApex 300 + B300K continuous output is 3,840W with a 7,680W surge ceilingthe Apex weighs 148.8 lbs against the F3800's 132.3 lbs
Why it mattersAnyone sizing a circuit for a specific high-draw tool — a table saw, an air compressor, a window AC — should size to the F3800's 6,000W ceiling, not to either unit's capacity.
Over the 5-year warranty, the F3800 costs more per year ($540 vs $520) while covering less of the exact daily-cycle use case — van life, a home shop running all day — that a power station buyer actually lives with.
Van Life Daily needs 4,685Wh and the F3800 covers only 144% of its own capacity (it can't finish the day)the Apex 300 + B300K covers exactly 100% of that same 4,685Wh loadF3800 costs $540 per warranty year against the Apex's $520
Why it mattersBuyers who cycle a unit daily rather than occasionally should size on capacity and lifetime cost, not on inverter wattage — the Apex is the one that gets through the whole day without a midday recharge.
An undisclosed spec isn't automatically a red flag, but paired with owner reports of intermittent buzzing under loadA6A7, it reads like a number Anker would rather not commit to in writing.
the Apex 300 + B300K discloses 45dB of noise under loadthe F3800's noise level is not disclosed at allowners report the F3800's battery packs made intermittent buzzing/rattling noise during heavy startup loadsA6
Why it mattersCPAP users or anyone putting the unit in a bedroom should weight the documented 45dB figure over the F3800's silence on the subject.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: Nearly 2x gap in cost per lifetime kWh is the biggest number on this page.
cost / lifetime kWh
$0.23 per lifetime kWh for the F3800, $0.13 for the Apex 300 + B300K. Over the same 5-year warranty, that's $540 a year against $520 — a smaller gap annually than the per-kWh number suggests, because the F3800's higher price and lower total lifetime kWh (11,520 vs 19,354) partly offset each other.
The real driver is the Apex's bigger pack getting more cycles at a similar price. 3,500 cycles at 5,529.6Wh moves more total energy over its life than 3,000 cycles at 3,840Wh, and it does it for $100 less at checkout.
Your Life, Your Pick
Selected because: Van Life Daily is the one scenario the F3800 can't actually finish.
On the smaller scenarios — CPAP Overnight, Remote Workday, Tailgate Party — both units have room to spare and the winner is listed as both; capacity isn't the constraint. Weekend Camping and the 8-Hour Blackout go to the Apex on cost per Wh used, not because the F3800 can't handle them.
Van Life Daily is the exception that matters: at 4,685Wh needed, the F3800's own capacity covers only 144% of what it would need to use — in plain terms, it can't get through a full daily-use cycle without a midday top-up. The Apex lands at exactly 100%, using its whole pack with nothing left in reserve.
Portability & Form Factor
Selected because: 16.5 lb weight gap runs opposite to the inverter-size gap — worth explaining why.
weight
132.3 lbs against 148.8 lbs — both are two-person lifts out of a trunk, and neither ships light. The 16.5 lb difference won't change how you move either one; it's a rounding error next to what each unit can actually run once it's in place.
What the Specs Don't Tell You
Selected because: Surge ratio, UPS speed, and noise disclosure all cut different directions and deserve unpacking.
rated cycles
The surge gap (9,000W vs 7,680W) and the UPS gap (20ms vs 10ms) both favor different units for different reasons: the F3800 wins the raw-power spec, the Apex wins the switchover-speed spec that actually matters during a live blackout. Noise disclosure splits the same way — Bluetti states 45dB under load; Anker states nothing, and owner reports of intermittent buzzingA6A7 are the closest thing to a real number available for the F3800.
Strengths & trade-offs
Anker SOLIX F3800
Strengths
- +Costs $599 less
- +Lighter by 16.5 lb
- +Higher AC output
Trade-offs
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI Apex 300 + B300K
Strengths
- +Larger battery capacity
Trade-offs
- –Significantly heavier (+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
Apex 300 + B300K
The SOLIX F3800 cuts it close at 64%. One cold night or an unexpected device and you're rationing power. The Apex 300 + B300K finishes at 45%, leaving real headroom for spontaneous use. If you camp in variable weather, that buffer keeps you relaxed instead of checking your battery app every 20 minutes.
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 survive, but the Apex 300 + B300K finishes at just 35% used. That's enough reserve for a second blackout night. The SOLIX F3800 at 50% leaves little margin if the outage runs longer than expected. In storm-prone areas, that remaining capacity is insurance.
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
Both are wildly overqualified for CPAP. You're using 10% or less. Save your money and buy whichever is cheaper; the extra capacity is completely wasted on a 40W overnight load. Put the savings toward a second battery for multi-night trips.
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 breaking a sweat. At these utilization levels, prioritize the unit with better USB-C output for direct laptop charging. It's more convenient than using the AC inverter and wastes less energy.
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
Either unit
Both handle game day easily. Since capacity isn't the deciding factor, consider weight: the lighter unit is easier to load into a truck bed. Also check if either has Bluetooth speaker-level noise. Fan sound matters in social settings.
Battery budget usedlower = more headroom
LOAD Blender 400W×0.5h · LED TV (55") 80W×4h · Bluetooth Speaker 15W×4h · Phone Charger (×3) 45W×2h
SCN-06 · 24 hours · needs 4,685Wh
Van Life Daily
A full day of mobile living — the ultimate endurance test
Apex 300 + B300K
The SOLIX F3800 runs out of juice. It only has 3,264Wh usable, but this scenario needs 4,685Wh. The Apex 300 + B300K covers it and still has 1h of phone charging left over.
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 six 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
July 15, 2026
Verdict: the BLUETTI Apex 300 + B300K
Buy the Apex 300 + B300K unless you have a specific 4,000W+ continuous load — a table saw, a window AC, an RV's rooftop unit — that needs the F3800's bigger inverter. The Bluetti costs $100 less up front, stores 1,689.6Wh more energy, switches over twice as fast in a blackout (10ms vs 20ms), and costs $0.13 per lifetime kWh against the Anker's $0.23. The Anker's advantage is real but narrow: more continuous watts and a higher surge ceiling. Most buyers aren't running loads anywhere near either unit's limit, which means the energy-and-price math decides it.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 15, 2026. The links below open Anker's and BLUETTI's current prices.
$2,599.00 list · direct from BLUETTI
or check the SOLIX F3800 price$1,999.99 list
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 15, 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 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.
Weight Reality Check
Neither unit is grab-and-go. The SOLIX F3800 (132.3 lbs) is a two-person lift. The Apex 300 + B300K (148.8 lbs) is firmly a two-person lift. It goes where you put it and stays there. That's a 17 lb difference.
Apex 300 + B300K: 45dB Under Load
45dB is about as loud as a running refrigerator. If you're running a CPAP or sleeping near this unit, the fan noise may be noticeable. Most people find anything above 45dB disruptive for sleep.
Surge Power: Inverter Quality Indicator
The Apex 300 + B300K has a 2× surge-to-continuous ratio vs the SOLIX F3800's 1.5×. A higher ratio (≥2×) means the inverter handles motor startup surges better. That's critical for fridges, AC compressors, and power tools that briefly draw 2-3× their rated wattage. The SOLIX F3800 may trip when starting these appliances even though its continuous wattage looks sufficient.
UPS Speed: line-interactive (<10ms) vs standby (<20ms)
The Apex 300 + B300K switches to battery in 10ms (line-interactive (<10ms)), while the SOLIX F3800 takes 20ms (standby (<20ms)). Safe for desktop PCs, routers, and CPAP machines. NAS drives are protected. This matters if you're using it as a home UPS for always-on equipment.
SOLIX F3800: Noise Level Not Disclosed
The Apex 300 + B300K publishes its noise level (45dB), but the SOLIX F3800 doesn't. Brands that don't disclose noise specs often have louder units. If noise matters to you (CPAP users, apartment dwellers), this is worth investigating before buying.
Full record above — the Test Desk pick is the Apex 300 + B300K.
Check Apex 300 + B300K price →or check the SOLIX F3800 priceOwnership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The SOLIX F3800 is cheaper to buy, but the Apex 300 + B300K is cheaper to own. At $0.13/kWh over its lifetime vs $0.17/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 support. Historically known for incredible no-hassle replacements, but recent reports describe AI-driven support agents giving generic responses and complex return logistics for heavy units (hazmat shipping). The Anker brand reputation is still strong, but SOLIX-specific support quality is trending down.
Community
Moderate — active Reddit (r/Anker, r/AnkerSOLIXCommunity) and growing. Benefits from Anker's massive consumer electronics brand awareness.
App experience
Rated 4.5/5 iOS (~1,100 ratings) · 4.3/5 Android
Unique strength
Parent brand trust from Anker's consumer electronics dominance. InfiniPower technology for long cycle life. Strong $/Wh value in the mid-size and larger units — the S2000, F2600 and C1000 are among the better buys per watt-hour in the catalog.
Worth knowing
Support quality appears to be declining from its historically excellent level. Firmware updates have removed features without warning. Expansion ecosystem is smaller than EcoFlow's.
BLUETTI
Ecosystem
One of the broadest lineups — 15-20+ models from budget (AC2A) to flagship (Apex 300, 3072Wh). Includes specialized products: vehicle solar hubs, sodium-ion cold-weather units, and balcony storage systems.
Support
The most inconsistent support in the space. Heavily email-based with China timezone delays. Some users get smooth, efficient service; others report weeks of troubleshooting runarounds, being offered discounts on new units instead of repairs, and confusing third-party purchase claim processes. Buying direct from Bluetti's website tends to produce better support outcomes.
Community
Active and growing — Reddit r/bluetti has a dedicated community. Second-largest after EcoFlow in engagement.
App experience
Rated 4.5/5 iOS and Android — tied for best app experience in the category. V3.0 UI redesign was well-received.
Unique strength
Among the best capacity-to-price ratios available — several Elite and Apex units are the lowest $/Wh in the catalog. Widest product diversity including industry-firsts like sodium-ion cold-weather units and dual solar+alternator vehicle hubs. Full LFP standardization across lineup (3,500-6,000+ cycles). Dual-voltage (120V/240V) in flagships.
Worth knowing
Customer support inconsistency is the #1 risk factor. Older/discontinued units may become unrepairable — no spare parts policy for some models. Some reports of erratic communication from support agents.
Analyst note
Anker and BLUETTI are close competitors. Both have established support channels and growing ecosystems. Compare their specific warranty terms and community size for your peace of mind.
Growth path
SOLIX F3800
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 2,400W 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, so neither locks you out of growth — decide on capacity, price, and the rest, not the expansion checkbox.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
Anker SOLIX F3800
Anker support experiences on the F3800 split hard. One owner described being ignored for weeks after spending over $20,000 on the Solix lineA8, while another in the same thread reported fast, responsive advanced replacementsA9. That's not a coverage gap in this ledger — it's an honest split in real outcomes.
Owners also consistently flag the solar input as restrictive, effectively steering buyers toward Anker's own pricier panels rather than a generic arrayA1A2A13. One owner summed it up as otherwise a great unit held back by that one limitationA14. Fan behavior draws mixed reports too — mostly quiet, with occasional buzzing during heavy startup loads that one owner traced to a vibrating internal componentA6A7.
“I have been using the F3800 for a couple weeks now, using only a single 120V outlet into a reliance transfer switch and it runs everything I throw at it including a water pump.”
Sources
diysolarforum.com · thesolarlab.com
BLUETTI Apex 300 + B300K
The base Apex ships with no USB or DC ports beyond its AC plugs and high-voltage connectors — reviewers call the roughly $300 Hub D1 accessory needed to add them steep for what it deliversB1B2. That's the most consistent complaint in what's still a thin, review-heavy ledger for a bundle that only recently launched.
The praise runs the other direction: recharge speed clocked as astonishing, back to ready in under an hourB12, with enough headroom that one reviewer called it capable of genuinely replacing a generator, without the noise, fumes, or maintenanceB4.
“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
- Owners consistently complain that the solar/DC input is restrictive, effectively locking users into pricier Anker-branded panels rather than generic arrays. [SOLIX F3800 · 4 entries]
- Fan/inverter noise is generally reported as quiet at idle but with occasional intermittent buzzing/rattling under load or fault conditions. [SOLIX F3800 · 3 entries]
- Anker support experiences are polarized — some owners report fast, responsive replacements while at least one reports being ignored after a major purchase. [SOLIX F3800 · 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
“The solar input for charging is a pain, so much so that I'm only using it if there is no other way to charge the F3800.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [negative]
- A2
“The limitations of the inputs make it very difficult to use solar panels other than Anker's panels, which are pricey for a "full up" config.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [negative]
- A6
“I have 4 BP3800s and one of them made similar buzzing/rattling noise when a heavy AC load was starting up... only for around a second while inverter was ramping up.”
diysolarforum.com — 'Big issue with Anker Solix F3800 plus battery pack' · 2025-08 · [mixed]
- A7
“Anker support told me it was a ferrite bead vibrating inside the unit... This reduced the noise, initially. At some point, I moved the batteries around and now the noise is gone.”
diysolarforum.com — 'Big issue with Anker Solix F3800 plus battery pack' · 2025-08 · [mixed]
- A8
“Anker support is ghosting me after I spent over 20k on their solix line and solar panels within a month... they are not answering/returning my calls or emails.”
diysolarforum.com — 'Big issue with Anker Solix F3800 plus battery pack' · 2025-08 · [negative]
- A9
“I've called them and submitted tickets via their portal, always very responsive. They've even done advanced replacement for me.”
diysolarforum.com — 'Big issue with Anker Solix F3800 plus battery pack' · 2025-08 · [positive]
- A13
“no one on Youtube is addressing the solar input problem directly. But People smarter than myself with secondary charge controllers... are able to navigate around the problem.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [negative]
- A14
“other than the solar input problem having limited panel array choices to max out it's input capability it's a great unit so far.”
diysolarforum.com — 'Anker F3800 user reviews and opinions welcome' · 2024-07 · [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]
- 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]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the SOLIX F3800 if you…
- →Anyone running a single appliance that draws close to 4,000W continuous — a table saw, a full-size air compressor, an RV rooftop AC — where the Apex's 3,840W inverter would be the bottleneck.
- →Buyers who already own Anker solar panels or SOLIX gear and want a matching ecosystem, accepting the higher lifetime cost per kWh as the price of that fit.
Buy the Apex 300 + B300K if you…
- →Anyone cycling a power station daily — van life, a home workshop, a small off-grid cabin — where the Apex's bigger 5,529.6Wh pack and lower cost per lifetime kWh compound over years of use.
- →Buyers prioritizing blackout response time: the Apex's 10ms switchover is twice as fast as the F3800's 20ms, and it costs $100 less to get there.
If neither fits
If your peak load never approaches 3,840W and you cycle the unit only occasionally — weekend camping a few times a year — either unit is overkill on capacity and inverter size; look at a smaller, cheaper station in the 2,000-3,000Wh class instead.
The Bottom Line
Take the Apex 300 + B300K unless a specific appliance needs the F3800's bigger inverter. It's $100 cheaper, stores 1,689.6Wh more, switches over twice as fast, and costs $0.13 per lifetime kWh against $0.23 for the Anker.
The F3800 earns its keep in one scenario: a continuous load north of 3,840W that the Apex's inverter can't push. Outside that, the extra 2,160W of headroom is paying for capability most buyers will never use.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Anker SOLIX F3800 or the BLUETTI Apex 300 + B300K a better value?
The Apex 300 + B300K is the better value for most buyers. It costs $100 less, stores 1,689.6Wh more, and comes out to $0.13 per lifetime kWh against the F3800's $0.23. The F3800 only pulls ahead if you specifically need its higher 6,000W continuous output.
Can either unit run a table saw or air compressor?
The F3800's 6,000W continuous rating gives it more headroom for high-draw tools than the Apex 300 + B300K's 3,840W. If a single tool's rated draw sits above roughly 3,500W, size to the F3800 rather than the Bluetti.
Which one is faster in a blackout?
The Apex 300 + B300K switches over in 10ms; the F3800 takes 20ms. Both are fast enough that most electronics won't notice, but the Bluetti is twice as quick on paper — worth knowing if anything on that circuit is sensitive to interruption.
Why is the BLUETTI heavier if it has the smaller inverter?
The Apex 300 + B300K weighs 148.8 lbs against the F3800's 132.3 lbs because its extra weight goes into more battery cells (5,529.6Wh vs 3,840Wh), not a bigger inverter. It's a heavier box built to store more energy, not push more watts.
Does either unit have known reliability issues?
Anker's support outcomes on the F3800 are inconsistent — some owners report fast advanced replacements, others report being ignored for weeks. Field data on the Apex 300 + B300K is still thin since the bundle is new, but reviewers consistently note the base unit ships without USB or DC ports.
Where to buy
Anker SOLIX F3800
$1,999.99
$1,999.99 list · direct from Anker
BLUETTI Apex 300 + B300KPick
$2,599.00
$2,599.00 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.