Head-to-head test
BLUETTI AC200MAX vs BLUETTI AC240P
The AC240P is $740 pricier than the AC200MAX and holds 205Wh less — the premium buys an IP65 shell proven in rain and saltwater spray, and nothing else, so unless you need weatherproof power the cheaper unit is also the bigger one.
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
BLUETTI
AC200MAX
3,590Power Score · Appliance Class
$1,199.00 list · direct from BLUETTI
BLUETTI
AC240P
3,528Power Score · Appliance Class
$1,461.99 list · direct from BLUETTI
Spec deltas
The AC200MAX costs $1,199 and holds 2,048Wh. The AC240P costs $1,939 and holds 1,843Wh. Read that twice: the more expensive BLUETTI is the smaller battery, by 205Wh and $740. Almost every premium unit charges you for more capacity. This one charges you for less.
What the extra $740 actually buys is a fortress. The AC240P wears an IP65-rated shell that reviewers left out in a six-hour rainstorm and ran on a saltwater sailboat with no moisture getting inB2, the kind of abuse that would kill the MAX. It also adds a 15ms UPS switchover the MAX doesn't have, a 6-year warranty against four, a quieter fan, and faster rechargingB4. If the unit lives outdoors, that list is the reason to pay up.
For everyone else, the older MAX quietly wins the things that cost money. It is cheaper to buy, cheaper per lifetime kilowatt-hour, and its bigger battery clears an 8-hour blackout the AC240P runs short of. The AC240P is the better-built box; the AC200MAX is the better-value one. Unless weather is in the job description, take the MAX and keep the $740.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
Capacity
So the MAX is the cheaper battery twice over: cheaper at the register and cheaper to own, at $0.17 per lifetime kilowatt-hour against $0.30. The $740 gap can't be buying electricity, because the AC240P stores less of it. It is buying the IP65 armor around the cells and the UPS behind them — real hardware, but hardware that has nothing to do with how much power comes out.
AC200MAX: $1,199 for 2,048WhAC240P: $1,939 for 1,843Whboth rated for 3,500 charge cycles
Why it mattersIf your power station will never see weather or need to catch a grid drop, that $740 buys nothing you can plug into.
Usable energy runs about 85% of the rating, so the AC240P's 1,843Wh comes up short of a full night that the MAX's 2,048Wh covers. One unit hands off automatically and then dies before sunrise; the other you plug in by flashlight, but it actually lasts until morning. For a five-minute flicker protecting a desktop, the UPS is what matters. For a real outage, capacity is.
AC240P has a 15ms UPS switchover; the AC200MAX lists none8-hour blackout load: 1,645Whthe MAX finishes that night at 94% of usable capacity; the AC240P at 105%
Why it mattersHome-backup buyers who lose power for minutes want the AC240P's UPS; those who lose it for a night want the MAX's capacity.
continuous output
A well pump or RV air conditioner can spike to two or three times its running draw for the half-second it starts — enough to punch through the AC240P's 3,600W ceiling while the MAX's 4,800W absorbs it. The premium unit sustains more watts once things are running; the budget unit is the one that gets a stubborn motor spinning in the first place.
AC200MAX surge: 4,800W over 2,200W continuousAC240P surge: 3,600W over 2,400W continuouscompressor motors pull two to three times their running watts at startup
Why it mattersAnyone whose load list includes a well pump, compressor, or big air conditioner should read the surge row, not the price, and it points at the MAX.
The specific dimensions that decide these two units — everything else is a tie.
Lifetime Value
Selected because: Spine of the verdict: the MAX is cheaper to buy AND cheaper to own ($0.17 vs $0.30/lifetime kWh) while holding more capacity — the premium unit loses every energy-value column.
cost / lifetime kWh
This table usually breaks ties by asking who costs less to own over the years. Here it doesn't break a tie, it ends the argument: the AC200MAX is cheaper on both axes. It costs $740 less up front and, because its bigger pack pushes 7,168 lifetime kilowatt-hours through the same 3,500 cycles, it delivers each of those kilowatt-hours for $0.17 against the AC240P's $0.30. The more expensive unit is the more expensive electricity.
The one lifetime column the AC240P wins is coverage length: six years of warranty to the MAX's four. That's worth something if you value the paperwork, though per covered year the gap nearly closes, $323 against $300. Both units age at the same rate anyway, since 3,500 cycles is about 9.6 years of daily use either way. Same clock, more energy per tick, lower price. The value case isn't close, and it isn't what the AC240P is for.
Your Life, Your Pick
Selected because: The 8-hour blackout is the one scenario that splits — MAX handles it, AC240P falls ~5% short — so capacity, not UPS, decides the outage people buy these for.
Five of the six modeled loads return the same verdict for both boxes. A CPAP night, a work-from-home day, and a tailgate all sit well under either battery, while a no-recharge camping weekend of about 2,100Wh and a full van-life day of 4,685Wh overrun both. Runtime can't separate these two in most of life. It separates them in exactly one place, and it's the one that matters most.
The 8-hour blackout. A 1,645Wh night lands at 94% of the MAX's usable capacity, finishing with a sliver to spare, and at 105% of the AC240P's, which means the smaller pack goes dark before the grid comes back. There's the irony of the matchup: the AC240P is the unit with the UPS, built to catch the outage the millisecond it starts, but it's the MAX that can actually last the night. The best backup hardware in the pair sits on the battery that runs out first.
What the Specs Don't Tell You
Selected because: Four cards fire and map the whole trade: MAX wins surge, AC240P wins UPS and quiet, AC240P is heavier. This is where 'what does the premium buy' gets answered.
Four flags fire, and they split cleanly. The AC240P wears the weight card: at 72 pounds it's about 10 heavier than the MAX, the rare case where the premium unit is the harder one to lift, because a weatherproof shell isn't free. The MAX wears the noise card, its fan running 50 dBA under load to the AC240P's 45, a difference you'd notice in a quiet bedroom and ignore in a garage.
The two advantage cards are the real story. The AC240P is the only one with UPS, a 15ms switchover that lets it stand inline and take over an outage automatically, which the MAX simply can't do. The MAX answers with surge: 4,800W of startup headroom against 3,600W, more than twice its own continuous rating, enough to spin up motors the AC240P has to turn away. One card is about never noticing the grid dropped; the other is about starting the pump when it does. Which matters more is the whole decision.
Growth Path
Selected because: Both expand, but the AC240P's 1,200W solar ceiling genuinely beats the MAX's 900W — the one growth edge the premium actually earns, stated honestly.
solar input
Both units take BLUETTI's expansion batteries, so neither strands you at its base capacity — you can grow either toward a multi-kilowatt-hour bank without replacing it. That parity is worth stating plainly, so nobody pays the AC240P premium expecting a bigger ceiling.
Where the AC240P does pull ahead is solar intake: 1,200W against the MAX's 900W, a 300W-taller ceiling that lets it swallow a bigger panel array as an off-grid setup grows. If the plan is to keep adding panels, the AC240P harvests faster in the same midday sun. It's a genuine edge, just one that only pays off for buyers actually building a solar array, not the ones topping up from a wall outlet.
Strengths & trade-offs
BLUETTI AC200MAX
Strengths
- +Costs $263 less
- +Lighter by 10.1 lb
- +Larger battery capacity
Trade-offs
- –No major technical downsides compared to rival.
BLUETTI AC240P
Strengths
- +Higher AC output
- +Longer warranty
- +Faster solar charging
Trade-offs
- –Significantly heavier (+10.1 lbs), making it harder to move.
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
A two-night, no-recharge camping load runs about 2,100Wh — 121% of what the AC200MAX usably holds and 134% of the smaller AC240P, so both come up short together. Neither wins this one on runtime; the fix for either is solar input or a shorter appliance list. If anything tips it, the AC240P is the one you can leave charging in a surprise downpour.
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
AC200MAX
This is the one scenario that splits the two. A 1,645Wh night sits at 94% of the AC200MAX's usable capacity, finishing with a little to spare, and at 105% of the AC240P's, which runs out before morning. The AC240P switches over automatically the instant the grid fails, but its smaller pack can't cover the full night the MAX does. Endurance goes to the bigger battery.
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 draws about 320Wh overnight, 18% of the AC200MAX and 20% of the AC240P, so capacity is a non-issue for both. Two feet from your pillow, the tiebreaks are noise and switchover: the AC240P runs quieter at 45 dBA to the MAX's 50, and holds the machine through a grid blip on its UPS. Both get you through the night; the AC240P does it more quietly.
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
A laptop-and-monitor day runs about 910Wh, roughly half of either battery, 52% for the MAX and 58% for the AC240P, delivered through the same 100W USB-C on both. The desk tiebreak is the AC240P's UPS, which keeps a workstation from rebooting when the grid flickers mid-call. On raw runtime, a full day for both.
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
A 670Wh afternoon of speakers, a cooler pump, and phone charging uses about a third of either pack, 38% for the MAX and 43% for the AC240P, so both outlast the party. The MAX is about 10 pounds lighter to carry from the truck; the AC240P is the one that doesn't care if it starts to rain. Pick your tiebreak.
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
A full van-life day asks for 4,685Wh — 269% of the AC200MAX and 299% of the AC240P — so neither box is the tool on its own. Both take expansion batteries, but at that draw you're designing a system, not choosing a station. Start a size class up.
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: AC200MAX runs 8.5h vs 7.6h.
$1,199 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 0–116.1hComfort & Convenience
Makes off-grid life actually enjoyablescale 0–23.2hHigh-Draw Appliances
These reveal the real limitsscale 0–1.7h¹ 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 13, 2026
Verdict: the AC200MAX
Buy the AC200MAX unless you genuinely need a power station that can sit in the rain. At $1,199 it undercuts the $1,939 AC240P by $740 while holding more battery, 2,048Wh against 1,843Wh, which is why it costs $0.17 per lifetime kilowatt-hour to the AC240P's $0.30, and why it clears an 8-hour blackout the AC240P falls just short of. It also surges to 4,800W against 3,600W, so it starts bigger motors. The AC240P earns its money in exactly one place: an IP65 body that shrugged off a six-hour rainstorm and saltwater spray in testingB2, backed by a 15ms UPS the MAX lacks, a 6-year warranty, and a quieter fan. If your unit works outdoors, on a boat, or on a job site, that package is worth the premium. For everyone charging it under a roof, the older, cheaper, larger MAX is the better buy.
Editor-assigned confidence, based on cited owner research and spec analysis.
List prices as of July 13, 2026. The links below open BLUETTI's current price.
$1,199.00 list · direct from BLUETTI
or check the AC240P price$1,461.99 list
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated July 13, 2026
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, 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 — 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, AC200MAX rates 3.4/5 (4th percentile of 25 Large-class units), and AC240P rates 4.2/5 (52nd percentile of 24 Everyday-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.
The Rugged One Is the Heavy One
At 72 pounds the AC240P is about 10 heavier than the 61.9-pound AC200MAX, a rare inversion, since here the pricier unit is also the harder lift. That's the cost of a sealed, weatherproof body: armor has mass. Neither is a grab-and-go box, but if the unit travels often, the MAX is the friendlier carry.
50 dBA vs 45 dBA, and Where You'll Hear It
Under load the AC200MAX's fan holds about 50 dBA to the AC240P's 45, a small gap that vanishes in a garage and grows in a quiet bedroom. If the unit sleeps beside a CPAP, the AC240P is the calmer roommate. If it lives in the utility room, this card doesn't change your night.
The MAX's Best Card: 1,200 More Watts of Surge
Startup is where inverters get embarrassed, since motors can pull two to three times their running draw for a split second. The AC200MAX surges to 4,800W, more than twice its continuous rating, while the AC240P tops out at 3,600W. Both start a household fridge without drama; a well pump or workshop compressor is where the MAX's extra headroom actually earns its keep. It's the one spec where the cheaper, older unit is flatly better.
Only the AC240P Catches the Outage
The AC240P carries a 15-millisecond UPS switchover; the AC200MAX lists none. That means the AC240P can sit inline ahead of a router, desktop, or CPAP and take over the moment the grid drops, while the MAX has to be fetched and plugged in after the lights are already out. If automatic backup is why you're shopping, this is the AC240P's strongest card. Just check that its smaller battery covers the outage you're planning for.
Full record above — the Test Desk pick is the AC200MAX.
Check AC200MAX price →or check the AC240P 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 AC200MAX wins on both sticker price and long-term value. At $0.17/kWh over its lifetime, it's meaningfully cheaper to own. Clear value winner.
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.
Generous port selection supports complex multi-device setups.
Expansion batteries are BLUETTI-specific. You're investing in the BLUETTI ecosystem.
AC240P
EXPANDABLESupports BLUETTI expansion batteries, so you can add capacity later without replacing the base unit — useful if your needs may climb past 1,843Wh.
Accepts up to 1,200W of solar. Enough for a serious multi-panel array.
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.
Realistic full solar rechargeat 70% of rated panel output — see methodology
Analyst note
Both expand, but the AC240P's higher solar ceiling (1,200W vs 900W) 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.
BLUETTI AC200MAX
The MAX's field record is long and consistent, with two recurring dings. Reviewers measured its fans well into the 50s dBA under loadA1, and owners flag AC charging that needs roughly two hours to reach most of a full tankA2 — both hallmarks of an older design that BLUETTI's newer units were built to smooth outA3. Neither is a dealbreaker, and both are things you can see coming.
Underneath the complaints is a unit people genuinely like: a capable, well-liked expandable station with LFP cells rated around 3,500 cycles, roughly nine years of useful life, on a 4-year warrantyA4. It's a known quantity — proven, a little dated, and honest about what it is.
“The AC200MAX was a popular mid-range unit with solid capacity and an expandable battery, but its frustrations included slow charging, aging LFP chemistry, and an app that felt like an afterthought — the AC200L addresses nearly every one of these.”
Sources
diysolarforum.com · offgridbenchmark.com · firstquadcopter.com · bluettipower.eu · techradar.com
BLUETTI AC240P
The AC240P's headline holds up where it counts. Reviewers left it out in a six-hour rainstorm and watched the water bead off with the interior bone dry, then ran it on a sailboat through constant saltwater spray with no moisture intrusion after a wipe-downB2. The IP65 rating is the real thing, with one asterisk owners are careful to name: it only holds with every port cover closed, so running cables in the rain forfeits the protectionB1.
Beyond the weatherproofing, it reads as the premium end of the line — LFP chemistry, a fast charge that reaches most of full quickly, and expandability to a large multi-kilowatt-hour bankB4. The field record is thinner than the MAX's, but what exists is positive and points the same way: you're paying for build and charging, and both deliver.
“IP65 water- and dust-resistant, but the protection applies only when all port covers are closed; using it with cables plugged in compromises the rating, and it shouldn't be used in the rain that way.”
Sources
storagereview.com · backuppowerhub.com · makeuseof.com · techradar.com · fstoppers.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
- The AC200MAX is the older generation — louder, slower to charge, weaker app — that the AC200L was built to improve on. [AC200MAX · 3 entries]
- IP65 ruggedness proven in rain and saltwater, big expandability, and fast charging are the praise; the caveat is that water resistance only holds with port covers closed. [AC240P · 3 entries]
- A1
“The AC200MAX's fans are noticeably louder than the newer AC200L — measured well into the 50s dBA under load at 1 meter, versus the AC200L staying barely audible under moderate load.”
diysolarforum.com / offgridbenchmark.com — AC200MAX vs AC200L noise · 2026 · [negative]
- A2
“Slow AC charging is a common frustration — the AC200MAX takes roughly two hours to reach most of a charge, versus well under an hour for the AC200L.”
offgridbenchmark.com / firstquadcopter.com — AC200L vs AC200MAX · 2026 · [negative]
- A3
“The AC200MAX was a popular mid-range unit with solid capacity and an expandable battery, but its frustrations included slow charging, aging LFP chemistry, and an app that felt like an afterthought — the AC200L addresses nearly every one of these.”
offgridbenchmark.com — AC200L review / comparison · 2026 · [mixed]
- A4
“Still a solid, well-liked expandable power station with LFP chemistry rated around 3,500 cycles (roughly nine years of useful life) and a 4-year warranty, versus the AC200L's 5-year.”
bluettipower.eu / techradar.com — AC200MAX · 2026 · [mixed]
- B1
“IP65 water- and dust-resistant, but the protection applies only when all port covers are closed; using it with cables plugged in compromises the rating, and it shouldn't be used in the rain that way.”
storagereview.com / backuppowerhub.com — BLUETTI AC240/AC240P review · 2026 · [mixed]
- B2
“Real-world weatherproofing held up — left outside in a 6-hour rainstorm, water beaded off and the interior stayed bone dry; used on a sailboat with constant saltwater spray, no moisture intrusion after wiping down the exterior.”
makeuseof.com / techradar.com — AC240/AC240P review · 2026 · [positive]
- B4
“Premium end of BLUETTI's lineup; LFP battery, a fast charge reaching most of full quickly, and expandable to a very large multi-kWh bank.”
bluettipower.com / techradar.com — AC240P specifications · 2026 · [positive]
Research compiled July 13, 2026.
Who Should Buy Which
Buy the AC200MAX if you…
- →Your unit charges in a garage and works indoors. With no weather to survive, the AC240P's whole premium evaporates, and you're left comparing a cheaper, bigger battery to a pricier, smaller one. That's the easy version of this decision.
- →You start motors. A well pump, an RV air conditioner, or a workshop compressor needs surge headroom, and the MAX's 4,800W beats the AC240P's 3,600W by the exact margin that gets a stubborn motor spinning.
- →You want backup that lasts the night. The bigger 2,048Wh pack clears an 8-hour blackout the AC240P runs short of, and if you're willing to plug in by hand when the lights go, you don't need the UPS you'd be paying extra for.
Buy the AC240P if you…
- →Your power station lives outdoors: a job site, a boat deck, a campsite that floods, a truck bed in the rain. The IP65 shell that survived a rainstorm and saltwater spray in testingB2 is the entire reason to buy this unit, and for you it's worth every dollar of the $740.
- →You want true inline backup. The 15ms UPS lets the AC240P take over a grid drop automatically, so a router, desktop, or CPAP never reboots — as long as the outage is short enough for its smaller pack to cover.
- →You're building a solar array and want the longer warranty. The 1,200W solar ceiling and 6-year coverage both tilt toward a buyer planning to grow the system and keep it a long time.
If neither fits
If your real target is a no-recharge camping weekend of about 2,100Wh or a full van-life day of 4,685Wh, both units come up short — shop the 3kWh-plus class or plan an expansion battery from the start. And if the job is just phones, a laptop, and a lamp, either of these 60-plus-pound boxes is expensive overkill, and a 1kWh station does it for hundreds less.
The Bottom Line
The AC240P is the better-built machine and the AC200MAX is the better buy, and for most people those aren't in tension. You pay $740 more for the AC240P and get 205Wh less battery, a lower surge ceiling, and a heavier box, in exchange for an IP65 shell that laughs off rain and saltwaterB2, a UPS, and a longer warranty. That's a fair trade only if the weather is actually part of the job.
So picture where the unit will spend its life. On a boat, a job site, or an exposed deck, the AC240P earns its premium and then some, so buy it and don't look back. Anywhere with a roof, the older MAX is cheaper, bigger, starts bigger motors, and lasts the blackout the AC240P can't. Keep the $740 and put it toward panels.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
Is the BLUETTI AC240P worth $740 more than the AC200MAX?
Only if you need it to survive weather. The AC240P's premium buys an IP65 body proven in rain and saltwater spray, plus a 15ms UPS, a 6-year warranty, and a quieter, faster-charging design. But it stores 205Wh less than the MAX and costs more per lifetime kilowatt-hour, $0.30 against $0.17, so for indoor and garage use the cheaper, bigger AC200MAX is the better buy.
Why does the more expensive BLUETTI have a smaller battery?
Because you're not paying for capacity, you're paying for ruggedness. The AC240P's IP65 weatherproof housing, UPS, and premium build are where the $740 goes, and the sealed, armored design leaves it with 1,843Wh to the AC200MAX's 2,048Wh. It's a specialized tool, not a bigger one.
Can either one run a refrigerator through an 8-hour blackout?
The AC200MAX can; the AC240P falls just short. A fridge-and-essentials load of about 1,645Wh lands at 94% of the MAX's usable capacity but 105% of the AC240P's smaller pack. The twist is that only the AC240P has a UPS to catch the outage automatically, yet only the MAX has the capacity to last the whole night. For a full outage, capacity wins.
Which one should I get for a boat or a job site?
The AC240P, without much debate. Its IP65 shell shrugged off a six-hour rainstorm and constant saltwater spray in testing, which is exactly the abuse a deck or an outdoor job throws at it. Just remember the rating only holds with all port covers closed, so you can't run cables out in the rain.
Are the AC200MAX and AC240P both expandable?
Yes, both accept BLUETTI expansion batteries and can grow into a large multi-kilowatt-hour bank, so expansion isn't a tiebreaker here. The AC240P does accept more solar, 1,200W against 900W, which matters if you're building an array. Decide on that, weatherproofing, and price rather than on whether they expand.
Where to buy
BLUETTI AC200MAXPick
$1,199.00
$1,199.00 list · direct from BLUETTI
BLUETTI AC240P
$1,461.99
$1,461.99 list · direct from BLUETTI
Prices may vary by retailer and are subject to change.