Head-to-head test
Anker SOLIX F3800 PLUS vs BLUETTI Apex 300
Anker fixed the F3800's original solar bottleneck on the Plus — a true 3,200W input against the Apex 300's 2,400W — but that fix costs $1,100 more, and the Apex 300 still wins on lifetime cost per kWh.
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Anker
SOLIX F3800 PLUS
6,265Power Score · The AC & Fridge Zone
$2,499.99 list · direct from Anker
BLUETTI
Apex 300
5,062Power Score · The AC & Fridge Zone
$1,699.00 list · direct from BLUETTI
Spec deltas
3,200 watts. That's the SOLIX F3800 PLUS's solar ceiling — the highest of any unit in this comparison, up from the standard F3800's rated input. The Apex 300 tops out at 2,400W.
The Plus also holds more capacity than the Apex 300 (3,840Wh vs 2,764.8Wh), outputs far more continuous power (6,000W vs 3,840W), and wins three of the engine's six real-world scenarios outright. It costs $1,100 more to get there — $2,899 against $1,799 — and rates for 500 fewer cycles, 3,000 against the Apex 300's 3,500.
Run the full lifetime math and the Apex 300 still comes out ahead on cost per kWh delivered, $0.19 against $0.25. This is a genuine capability-versus-price tradeoff, not a case where either unit is simply the wrong buy.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
solar input
A higher solar ceiling only matters if you can actually feed it, and the standard F3800 owners on this site's other Apex 300 comparison specifically couldn't without buying Anker's own pricier panels. The Plus closes that gap at the hardware level, not just on the spec sheet.
The F3800 PLUS's solar input is rated at 3,200W and reviewers confirm it's compatible with normal MC4 solar panels, unlike the standard F3800A11The Apex 300's solar ceiling is 2,400W, 800W lower
Why it mattersBuyers planning to run generic or budget solar arrays should credit the Plus's fixed input over the standard F3800's — and weigh that 800W solar advantage over the Apex 300 seriously if fast off-grid recharge matters.
rated cycles
This is the honest catch on the Plus: it fixes a real problem the standard F3800 had and adds genuine capability, but none of that comes free. You're paying $1,100 more for the fix plus the extra capacity, not getting either at parity.
The F3800 PLUS costs $2,899 with a lifetime cost of $0.25 per kWh and 3,000 rated cyclesThe Apex 300 costs $1,799 with a lifetime cost of $0.19 per kWh and 3,500 rated cycles
Why it mattersBuyers who don't specifically need 3,200W of solar input or the extra headroom should default to the Apex 300's lower lifetime cost; buyers building a large off-grid array should treat the Plus's fixed input as worth the premium.
A buyer planning around 'the fridge' and a buyer planning around 'the fridge and the chest freezer' are solving two very different problems with the same unit, and only one of those plans leaves real margin.
Independent testing put the F3800 PLUS's base unit at roughly 17 hours running a fridge, laptops, and occasional device chargingA4The same testing found running a fridge and freezer together drained the unit in about 7.34 hoursA5
Why it mattersAnyone backing up more than one compressor appliance should size expectations to the 7.34-hour figure, not the 17-hour one — and should weigh whether the Apex 300's smaller battery would leave even less room for that same load.
The Apex 300's extra 40.7 lbs is real, but the Plus's wheeled portability isn't unconditional either. Both units are built to be rolled or lifted with help, not carried casually across uneven ground.
The F3800 PLUS weighs 132.3 lbs, identical to the standard F3800, against the Apex 300's 173 lbsOwner coverage notes the Plus's wheels handle grassy terrain but 'small bumps can be enough to slam everything to a halt' on rougher groundA8
Why it mattersBuyers moving the unit over gravel, grass, or campsite terrain regularly should plan for the Plus's wheel limitations rather than assuming its lighter spec sheet number means easier handling everywhere.
The specific dimensions that decide these two units — everything else is a tie.
PowerScore Breakdown
Selected because: The F3800 PLUS wins the engine's composite by the widest margin in this batch, driven by capacity, output, and solar.
overall power score
6,170 against 4,936 — the widest composite gap of any Apex 300 matchup in this batch. The Plus adds a 3,200W solar ceiling on top of the same capacity and output edge the standard F3800 already carried, which is why it out-scores its sibling as well as the Apex 300.
None of that comes from one inflated spec. Capacity, continuous output, cycle-adjacent warranty parity, and solar input all point the same direction, which is a cleaner story than most premium-vs-value matchups manage.
Growth Path
Selected because: The Plus's 3,200W solar ceiling is flagged as a real off-grid growth advantage over the Apex 300's 2,400W — the standout spec of this matchup.
solar input
The engine calls this one directly: the Plus's higher solar ceiling (3,200W vs 2,400W) gives it the stronger off-grid growth path. That's not a marginal edge — it's 800 more watts of panel you can add before hitting the input limit, on a unit that already fixed the input-compatibility complaints that dogged the standard F3800.
For buyers planning to expand a solar array over time rather than buying it all at once, that headroom compounds. The Apex 300's 2,400W ceiling isn't a bad number, but it's the one this section's growth math runs against.
Lifetime Value
Selected because: The Apex 300 wins on lifetime cost per kWh, the honest counterweight to the Plus's capability lead.
cost / lifetime kWh
The Apex 300 wins here the same way it does against the standard F3800: nineteen cents per lifetime kWh against twenty-five, driven by a $1,100 lower price and 500 more rated cycles, even though it holds less raw capacity.
It's a real, honest gap — the Plus's extra capability isn't priced at parity, it's priced at a premium. Whether that premium is worth it depends entirely on whether the solar ceiling and scenario headroom above are things you'll actually use.
What the Specs Don't Tell You
Selected because: Six cards fire, including a warranty tie and a surge-ratio advantage worth explaining.
rated cycles
Warranty ties at 5 years each — a rare case in this batch where the cheaper Apex 300 matches the pricier unit's coverage instead of trading it away. The surge-ratio card again favors the Apex 300's relative headroom: 7,680W surge on a 3,840W continuous base is 2.0x, against the Plus's 9,000W surge on its 6,000W base at 1.5x.
Weight and noise repeat the standard F3800's pattern: the Apex 300 is 40.7 lbs heavier but the only one of the two to publish a noise figure (45dB), while the Plus's sheet stays silent on the spec despite owner reports describing it as quiet under normal loadsA10.
Strengths & trade-offs
Anker SOLIX F3800 PLUS
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Substantially more expensive (+$801) than the Apex 300.
- –Significantly heavier (+48.5 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
BLUETTI Apex 300
Strengths
- +Costs $801 less
- +Lighter by 48.5 lb
Trade-offs
- –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
SOLIX F3800 PLUS
The Apex 300 cuts it close at 89%. One cold night or an unexpected device and you're rationing power. The SOLIX F3800 PLUS finishes at 64%, 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
SOLIX F3800 PLUS
Both survive, but the SOLIX F3800 PLUS finishes at just 50% used. That's enough reserve for a second blackout night. The Apex 300 at 70% 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 units handle this with large margin — the Plus uses about 10% of capacity, the Apex 300 about 14%. Neither unit's solar ceiling or extra capacity matters for a CPAP-only load; decide on price instead.
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
SOLIX F3800 PLUS
The SOLIX F3800 PLUS gives you a comfortable buffer at 28%. Enough to work late, join extra video calls, or charge a second device without worry. The Apex 300 at 39% works but leaves less room for the unexpected. For daily remote work, that peace of mind matters.
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
Close in practice — 21% used on the Plus against 29% on the Apex 300. Both clear the load easily, so this scenario shouldn't be the deciding factor either way.
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
Neither unit
Neither unit can fully handle this scenario (needs 4,685Wh). You'd need a higher-capacity station or to cut back on usage.
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: SOLIX F3800 PLUS runs 15.9h vs 11.5h.
$2,499.99 list · direct from Anker
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 0–217.6hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–43.5hHigh-Draw Appliances
These reveal the real limitsscale 0–3.3h¹ 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
The SOLIX F3800 PLUS out-scores the Apex 300 on the engine's composite (6,170 vs 4,936), holds 1,075.2Wh more capacity, and wins Weekend Camping, an 8-Hour Blackout, and a Remote Workday outright on headroom, backed by a 3,200W solar ceiling — the strongest of any unit in this comparison. It costs $1,100 more ($2,899 vs $1,799) and 500 fewer rated cycles (3,000 vs 3,500), pushing lifetime cost to $0.25 per kWh against the Apex 300's $0.19. The Apex 300 is also 40.7 lbs lighter to load. This is the same shape of tradeoff as the standard F3800: real, usable capability on the Plus versus a meaningfully lower price and better cost-per-kWh on the Apex 300. Buyers who need the solar ceiling or the extra headroom should pay for the Plus; buyers whose loads fit the Apex 300's scenarios should keep the $1,100.
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.
$1,699.00 list · direct from BLUETTI
or check the SOLIX F3800 PLUS price$2,499.99 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): UPS.
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 4.7/5 (80th percentile of 16 Home Backup-class units), and Apex 300 rates 4.9/5 (92nd percentile of 25 Large-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.
Apex 300 Is 40.7 lbs Heavier
173 lbs against the Plus's 132.3 — the Plus is the lighter unit on paper, though its wheels have documented limits on rough terrain, so don't assume effortless handling either way.
Apex 300 Publishes 45dB Under Load
The only documented noise figure between these two, even though owner reports describe the Plus as quiet under normal household loads and audible mainly above roughly 4,000W.
Apex 300 Carries More Surge Headroom Relative to Its Rating
7,680W surge on a 3,840W continuous base is 2.0x; the Plus's 9,000W surge on its 6,000W continuous base is 1.5x. The Plus still has the higher absolute surge number — the Apex 300 has more margin relative to its everyday draw.
UPS Speed: line-interactive (<10ms) vs standby (<20ms)
The Apex 300 switches to battery in 10ms (line-interactive (<10ms)), while the SOLIX F3800 PLUS 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 PLUS Doesn't Publish a Noise Figure
No spec sheet number means no documented basis for comparison, even where owner reports lean toward describing it as quiet.
Full record above — the Test Desk pick is the Apex 300.
Check Apex 300 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
Both units have similar long-term ownership costs ($0.22/kWh vs $0.18/kWh). The price difference is what you see on the sticker — neither is a hidden bargain or rip-off.
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 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
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,765Wh.
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
The clearest signal on the F3800 PLUS is that Anker actually fixed a known problem: reviewers confirm the 3,200W solar input now works with standard MC4 panels, directly addressing the compatibility complaints that plagued the original F3800A11. Real-world runtime is load-dependent — about 17 hours on light loads like a fridge and occasional charging, dropping to roughly 7.34 hours running a fridge and freezer togetherA4A5.
The rougher edges: one owner reported a battery-pack noise issue serious enough to worry about fire risk and described being ignored by support for weeks, though a different owner in the same thread reported fast, responsive advanced replacementsA1A2 — support experience appears inconsistent rather than uniformly bad. Early units also drew standby-drain complaints that a firmware update reportedly cut by about halfA9, though that fix isn't independently confirmed by a second source.
“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
Against the Plus's fixed solar input, the Apex 300's field data tells a different kind of story — it's recent enough that coverage skews toward press testing rather than settled owner consensus. The recurring theme is software: multiple BLUETTI community-forum threads describe firmware updates locking the unit into Backup mode, throwing Error 004 during charging, or breaking Bluetooth connectivity with Home AssistantB1B2B3.
On the hardware side, reviewers call the Apex 300 heavy but manageable thanks to its handles and modular battery designB6, and note the missing built-in DC/USB ports push buyers toward a $300 Hub D1 accessoryB7B11. Where the Plus's problems cluster around firmware polish and a single hot-noise complaint, the Apex 300's cluster around app reliability and missing ports out of the box.
“I was using Bluetti-bt until the latest Bluetti firmware update. I then started having disconnects.”
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]
- Multiple owners report firmware updates causing app glitches, mode-lock issues, error codes, or Bluetooth/Home Assistant disconnects shortly after updating. [Apex 300 · 4 entries]
- Reviewers consistently flag the lack of built-in USB/DC ports as a design tradeoff requiring costly add-on accessories (Hub D1, Hub A1). [Apex 300 · 4 entries]
- The unit's extreme weight (~85 lbs) is repeatedly described as making it barely 'portable' and hard to carry alone. [Apex 300 · 2 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]
- 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]
- 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]
- B1
“I updated my Apex 300 to the latest firmware yesterday. Now it's stuck in 'Backup' mode... Now when I go into the app to try to change it back, it flashes to...”
BLUETTI Community forum — 'Apex 300 stuck in Backup mode after last firmware update' · 2025-11 · [negative]
- B2
“When the system reached 97% charge, I decided to install the firmware updates. After the update completed, the charging stopped and I received Error 004.”
BLUETTI Community forum — 'Error E004 Apex 300' · 2025-11 · [negative]
- B3
“I was using Bluetti-bt until the latest Bluetti firmware update. I then started having disconnects.”
GitHub bluetti-official/bluetti-home-assistant issue #95 — 'APEX 300 and Hub A! now working' · 2026-05 · [mixed]
- B6
“It's heavy, no question, but the handles and modular battery design make it manageable.”
Techspective — 'Bluetti Apex 300 with B300K Review' · 2025-09 · [mixed]
- B7
“Not having DC or USB ports on the face is a tradeoff. The Hub D1 solves the problem—but it's an additional $300 accessory that you then have to bolt on after the fact.”
Techspective — 'Bluetti Apex 300 with B300K Review' · 2025-09 · [negative]
- B11
“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 — 'Bluetti Apex 300 Review: Cheap, Practical Home Backup?' · unknown · [negative]
Research compiled July 15, 2026.
Who Should Buy Which
Buy the SOLIX F3800 PLUS if you…
- →You're building or expanding a solar array and want the highest input ceiling in this comparison — 3,200W, fixed for standard MC4 panel compatibility rather than locked to pricier proprietary hardware.
- →You run multiple compressor appliances at once, where the tested 7.34-hour fridge-and-freezer runtime and the 6,000W continuous rating both matter more than the Apex 300's lower price.
Buy the Apex 300 if you…
- →Your loads already fit inside the Apex 300's scenarios with margin, and you'd rather keep the $1,100 than pay for solar headroom you won't use.
- →You want the lowest cost per kWh delivered over the unit's life and don't have a specific need for the Plus's 3,200W solar ceiling or its extra continuous output.
If neither fits
If the job is continuous full-day power draw (the engine's Van Life Daily scenario needs roughly 4,685Wh), skip both — the Plus only reaches 144% of that load and the Apex 300 199%, so neither runs it without a mid-day recharge. Look at a larger flagship or pair either with its expansion battery instead.
The Bottom Line
The F3800 PLUS is the most capable unit in this batch — the highest composite score, the biggest solar ceiling, and a documented fix for the original F3800's input problems. None of that changes the Apex 300's position as the cheaper unit to buy and the cheaper one per kWh delivered over its life.
Pay the $1,100 premium if the 3,200W solar ceiling or the extra scenario headroom is something your setup will actually use. Otherwise, the Apex 300 does the job for less and costs less per kWh doing it.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the Anker SOLIX F3800 PLUS worth $1,100 more than the Bluetti Apex 300?
If you need its 3,200W solar ceiling or the extra scenario headroom, yes — it's the strongest solar input and highest composite score in this comparison. If your loads already fit the Apex 300's scenarios comfortably, the Apex 300's lower lifetime cost per kWh ($0.19 vs $0.25) makes it the better value.
Does the F3800 PLUS fix the original F3800's solar problems?
Reviewer testing confirms it does — the Plus's 3,200W input is compatible with standard MC4 solar panels, directly addressing the compatibility complaints owners raised about the original F3800. That's a real hardware fix, not just a bigger number on the spec sheet.
How long does the F3800 PLUS actually run a fridge?
Independent testing found about 17 hours running a fridge with light additional loads like laptop charging, but only about 7.34 hours running a fridge and a freezer together. Size your expectations to whichever combination matches your actual setup.
Which lasts longer in cycles — the F3800 PLUS or the Apex 300?
The Apex 300, at 3,500 rated cycles against the Plus's 3,000, while both carry 5-year warranties. Combined with its $1,100 lower price, that's the core of why the Apex 300 wins on lifetime cost per kWh despite the Plus's larger battery.
Which is quieter, the F3800 PLUS or the Apex 300?
The Apex 300 publishes a 45dB figure under load; the Plus's spec sheet lists nothing, though owner reports describe it as quiet under normal loads and only noticeably louder above roughly 4,000W draw or during max-speed charging. There's no documented number on the Plus to compare directly.
Where to buy
Anker SOLIX F3800 PLUS
$2,499.99
$2,499.99 list · direct from Anker
BLUETTI Apex 300Pick
$1,699.00
$1,699.00 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.