Head-to-head test
BLUETTI AC200MAX vs BLUETTI Apex 300 + B500K
Real-world runtimes, scenario verdicts, and ownership costs compared — which wins for your use case.
Full profiles: BLUETTI AC200MAX → · BLUETTI Apex 300 + B500K →
Written by Gunner GustafsonUpdated
Whole-Home Backup Tester, Station Arena Test Desk
Spec deltas
Both carry the BLUETTI name, but they're built for different buyers. The AC200MAX (2,048Wh, 2,200W) and the Apex 300 + B500K (7,885Wh, 3,840W) come from different product lines with different engineering priorities and a $2,100 price gap. The Apex 300 + B500K has a slight edge, but the margin is close enough that your use case should break the tie.
What the spec gap means in practice: the Apex 300 + B500K's 3,840W inverter has the headroom for a window AC, a full-size fridge, and power tools. The AC200MAX's 2,200W inverter still runs most single appliances; the Apex 300 + B500K's real edge is surge headroom for the biggest motor starts and stacking several heavy loads at once. On stamina, the Apex 300 + B500K keeps a fridge alive for roughly 45 hours vs the AC200MAX's 12 hours. The cost? Portability. At 183 lbs, the Apex 300 + B500K is spread across boxes you site once and leave. The AC200MAX at 61.9 lbs is more manageable, though still not light.
Pick the Apex 300 + B500K if your primary use is 8-hour blackout or remote workday. Go with the AC200MAX if you primarily need it for tailgate party. Keep scrolling for the full breakdown. The scenario verdicts below hold a few surprises.
Bench Notes
What each unit does well, where it falls short, and the trade-offs that matter.
BLUETTI AC200MAX
The 2,200W inverter handles most daily devices like laptops, blenders, and TVs, but will struggle with heating elements that require over 1500W. Weighing in at 61.9 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion.
Strengths
- +Lighter by 121.1 lb
Trade-offs
- –Weaker inverter (-1,640W) limits appliance compatibility.
- –Shorter-lived battery — rated for 3,500 charge cycles vs the Apex 300 + B500K's 6,000, so it wears out sooner.
BLUETTI Apex 300 + B500K
With a massive 3,840W output, the Apex 300 + B500K can run high-wattage appliances like space heaters, hair dryers, and electric grills without tripping. Weighing in at 183 lbs, this is not a unit you want to carry far. It's best suited as a stationary backup or RV companion. A standout feature is the value proposition: at roughly $0.42 per watt-hour, it's one of the most cost-effective options on the market.
Strengths
- +Larger battery capacity
- +Higher AC output
- +Longer warranty
- +Faster solar charging
- +Rated for 6,000 charge cycles — much longer battery lifespan
Trade-offs
- –Significantly heavier (+121.1 lbs), making it harder to move.
- –Very heavy unit that may be difficult for one person to lift.
Will It Power Your Gear?
Scenario math and per-appliance runtimes, modeled from the spec record.
Scenario verdicts
We ran the math on 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 gives you a powered weekend: the Apex 300 + B500K has the energy but doesn't travel, and the AC200MAX covers about 83% of the 2,100Wh. One can't go; the other can't finish.
Battery budget usedlower = more headroom
LOAD Phone Charger 15W×6h · LED Lights 40W×8h · Box Fan 75W×14h · CPAP Machine 40W×16h
SCN-02 · 8 hours · needs 1,645Wh
8-Hour Blackout
Keep the essentials running through a night without power
Apex 300 + B500K
Both survive the night. The Apex 300 + B500K finishes at 25% used with 5,057Wh left — 3.1 more nights like it. The AC200MAX finishes at 94% with 96Wh, 6% of a second night. If your outages tend to run past one evening, that difference is the whole argument between them.
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 CPAP is about 40W for eight hours, so both of these cover the night several times over — capacity isn't the question here. The only published difference is fan noise, and it can't settle this: the Apex 300 + B500K is rated 45dB and the AC200MAX 50dB, but both are BLUETTI's own ratings on one convention, best-case floors rather than readings at a CPAP's draw. Neither settles which box is quieter at a bedside. Only the Apex 300 + B500K is still sold, so a new purchase here is just the Apex 300 + B500K; the AC200MAX is a used-market question.
Battery budget usedlower = more headroom
LOAD CPAP Machine 40W×8h
SCN-04 · 8 hours · needs 910Wh
Remote Workday
Full work day off-grid without power anxiety
Apex 300 + B500K
The Apex 300 + B500K clears the workday at 14% used, banking 5,792Wh — late work, extra calls, or a second laptop charge without arithmetic. The AC200MAX at 52% also finishes, with 831Wh of slack for the unplanned.
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
AC200MAX
The Apex 300 + B500K at 183 lbs is not a take-along — it rolls off a truck bed if it travels at all, so this scenario belongs to the AC200MAX by default — and it earns it, covering the 670Wh with 1,071Wh to spare. Capacity was never the Apex 300 + B500K's problem here; getting to a tailgate was.
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 + B500K
The AC200MAX doesn't finish — 1,741Wh usable against the 4,685Wh this needs leaves it 2,944Wh short, about 37% of the scenario covered. The Apex 300 + B500K covers it with 2,017Wh to spare.
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 + B500K runs 32.7h vs 8.5h.
$3,299 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 0–446.8hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–89.4hHigh-Draw Appliances
These reveal the real limitsscale 0–6.7h¹ 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 10, 2026
Verdict: the Apex 300 + B500K, on Power Score margin
These two units are closely matched on individual specs, but our Power Score analysis gives the Apex 300 + B500K the edge with a composite score of 7,342 vs 3,356.
Overall score margin: 3,356 vs 7,342 (−118.8%)
List prices as of July 10, 2026. The links below open BLUETTI's current price.
$3,299.00 · direct from BLUETTI
Last checked 28 days ago. Prices move — check before you buy.
Written by Gunner Gustafson, Whole-Home Backup Tester · Station Arena Test Desk · Updated July 10, 2026
Black Friday · 26 days out
Price to beat:Apex 300 + B500K $3,299
We have never seen it discounted, so any real cut would be a first.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): RV Living, Solar Generator, Tailgating, Apartment Balcony.
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.
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, AC200MAX rates 3.4/5 (8th percentile of 27 Large-class units), and Apex 300 + B500K rates 3.5/5 (11th percentile of 29 Whole-Home / Off-Grid-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 AC200MAX (61.9 lbs) is manageable solo but heavier than a large checked suitcase. The Apex 300 + B500K (183 lbs) is spread across its boxes — no single lift, but nothing you reposition on a whim. That's a 121 lb difference, and it is paid once — getting the heavier one into position, not every time you move it.
Fan Noise: Two Published Ratings
The Apex 300 + B500K is rated 45dB (like a running refrigerator), the AC200MAX 50dB (like moderate rainfall). Neither is a measurement on a shared bench — both are BLUETTI's own ratings on one convention, best-case floors rather than readings at a CPAP's draw. Take the pair as a prompt to find hands-on reports rather than as a gap you can act on. For most people, fan noise around 45dB and up is where sleep starts to suffer, and neither figure tells you what either unit does at a 40W draw.
Apex 300 + B500K: Power Lifting to 7,680W
The Apex 300 + B500K 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 7,885Wh is a short session either way. Genuinely useful if a heater or a kettle is why you're buying; beside the point otherwise. Our record for the AC200MAX carries no Power Lifting figure, only a 4,800W surge peak, which is a different rating, so check BLUETTI's own spec sheet before reading this as something the AC200MAX lacks.
Only the Apex 300 + B500K Lists a UPS Mode
The Apex 300 + B500K can sit between the wall and your gear and hand it to battery when the grid drops — rated ≤10ms — quick enough on paper that desktop PCs and routers should ride through, treating that as the rating it is. Worth it for a router, a desktop PC, or a CPAP. The AC200MAX's spec sheet lists no UPS mode, so anything plugged into it rides an outage only as far as your reaction time.
Warranty: 5 Years vs 4
The Apex 300 + B500K is covered for 5 years against the AC200MAX's 4 years. The Apex 300 + B500K's figure is a maximum rather than a guarantee — it depends on buying direct from BLUETTI or registering the unit, since reseller purchases carry a shorter term. An underrated factor if you're keeping this unit for years.
Battery Lifespan in Real Years
The Apex 300 + B500K is rated for 6,000 cycles vs 3,500. In real life: at daily use, that's 16.4 vs 9.6 years. At weekend use (twice a week), it's 58 vs 34 years. One caution reading years across different sizes: a cycle is 7,885Wh on the Apex 300 + B500K and 2,048Wh on the AC200MAX, so count lifetime energy — roughly 47,309 kWh against 7,168 kWh over the rated life. After hitting the cycle limit, the battery doesn't die — it drops to ~80% of original capacity, which is still very usable.
Full record above — the Test Desk pick is the Apex 300 + B500K.
Check Apex 300 + B500K price →Ownership Analysis
What happens after you buy — true cost of ownership, brand trust, and growth potential.
Lifetime value
Service lifeyears at one full cycle per day
Lifetime energy delivered
Cost per delivered kWh
│ warranty ends · Reaching the cycle rating means ~80% capacity remains — degraded, not dead.
Analyst note
The AC200MAX is no longer sold, so there is no price to work its cost per kWh from, and this comparison doesn't quote one. On what you can actually buy today, the Apex 300 + B500K works out at $0.07/kWh over its rated life. If you already own the AC200MAX, the hardware comparison still holds: over its rated life the AC200MAX delivers about 7,168 kWh and the Apex 300 + B500K about 47,309 kWh.
Growth path
AC200MAX
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 2,048Wh.
Accepts up to 900W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
Apex 300 + B500K
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 7,885Wh.
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
Growth only counts if you can still buy in, and the AC200MAX is no longer sold (BLUETTI points owners to the AC200L). That leaves the Apex 300 + B500K: it starts at 7,885Wh and takes BLUETTI expansion batteries, so the ceiling moves if your needs do. The AC200MAX's expandability still matters if you already own one, but it isn't a reason to pick it over the Apex 300 + B500K.
The Bottom Line
The full picture comes down to this. The Apex 300 + B500K edges ahead on our overall analysis, but the margin is narrow enough that your specific use case should drive the decision. Review the scenario verdicts above — if the AC200MAX wins in the scenarios that match your life, it's the right choice regardless of aggregate scores.
If neither the AC200MAX nor the Apex 300 + B500K feels like the right fit, your power needs probably sit outside what these two target. For lighter use — weekend camping or phone/laptop charging — you'd be overpaying for capacity you'll rarely tap. Consider a unit in the 500–1,500Wh range instead. Prices on portable power stations fluctuate frequently. Both BLUETTI discount regularly, so check the current price before committing. Prime Day and Black Friday pricing typically drops 20-30%.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
How does the 5,836.8Wh capacity difference actually affect daily use?
The Apex 300 + B500K's 7,884.8Wh battery keeps a mini-fridge running for roughly 45 hours vs the AC200MAX's 12 hours. Both can handle a full 8-hour blackout setup (fridge + router + lights + phone charging ≈ 1,645Wh), but the Apex 300 + B500K finishes with significantly more margin. That matters if conditions aren't ideal or the outage runs long. What specs don't mention: runtime drops 20-30% in cold weather (below 32°F/0°C) as battery chemistry slows down. The Apex 300 + B500K's extra capacity provides a critical cold-weather buffer. For occasional phone and laptop charging, both are overkill. This gap only matters for sustained, multi-appliance use.
Can I actually carry the Apex 300 + B500K, or is the AC200MAX the only portable option?
Neither is "portable" in any hiking sense. The AC200MAX (61.9 lbs) and the Apex 300 + B500K (183 lbs) are both appliances you place and leave. The 121.1-lb difference matters when loading into a vehicle or moving between rooms, but that's about it. If true portability is your priority, look at units under 20 lbs in a different class entirely.
How fast can each unit recharge from solar panels in real conditions?
On paper, the Apex 300 + B500K accepts 2,400W vs the AC200MAX's 900W of solar input. What the spec sheet won't tell you: solar panels typically deliver only 60-80% of their rated output due to panel angle, cloud cover, and temperature. In realistic conditions, expect full recharge in about 4.7 hours for the Apex 300 + B500K and 3.3 hours for the AC200MAX. That gap widens on cloudy days, when the Apex 300 + B500K's higher input ceiling captures more of whatever sunlight is available. One more thing: summer gives you ~7 productive solar hours per day. Winter drops to ~4. If solar is your primary recharge method, the Apex 300 + B500K's advantage is substantial.
"6,000 vs 3,500 cycles" — what does that actually mean for me?
In real years: the Apex 300 + B500K (6,000 cycles) lasts 16.4 years at daily use, 58 years at weekend use (twice a week), or 250 years at twice-monthly camping trips. The AC200MAX (3,500 cycles): 9.6 years daily, 34 years weekends, or 146 years twice-monthly. What most people miss: hitting the cycle limit doesn't kill your battery. Capacity drops to about 80%. Your 7,884.8Wh unit becomes a ~6,308Wh unit. Still very usable. For weekend users, both batteries will outlast the warranty by years.
Can I use the Apex 300 + B500K as a home UPS to protect my electronics during blackouts?
Yes. The Apex 300 + B500K has UPS mode with true 0ms switchover (double-conversion). Even hospital-grade equipment won't notice. Plug in your desktop PC, router, NAS, or CPAP machine and it switches to battery seamlessly when the grid drops. The AC200MAX does not have this feature. Without UPS, a blackout means: your PC reboots (potentially corrupting unsaved work), your NAS may corrupt its drive array, your CPAP alarms and wakes you up, and your security cameras go dark until you manually switch them over. If always-on power protection matters, this is a dealbreaker advantage for the Apex 300 + B500K.
Bottom line: should I buy the AC200MAX or the Apex 300 + B500K?
We'd buy the Apex 300 + B500K. The AC200MAX is no longer sold, so there is no price to weigh it against; the comparison on this page still helps if you own one.
Where to buy
BLUETTI AC200MAX
Sold out at BLUETTI
BLUETTI Apex 300 + B500KPick
$3,299.00
$3,299.00 · direct from BLUETTI
Last checked 28 days ago. Prices move — check before you buy.
Prices may vary by retailer and are subject to change.