Head-to-head test
BLUETTI AC180P vs BLUETTI AC200MAX
BLUETTI AC180P vs BLUETTI AC200MAX: the AC200MAX adds 608Wh, expansion batteries, 900W solar input and a TT-30 RV outlet, and it's the one that lasts an 8-hour blackout. It also weighs 26.6 lbs more, and BLUETTI no longer sells it. For home backup, buy the AC200L instead; take the AC180P if you'll carry it often or want a published UPS switchover.
Full profiles: BLUETTI AC180P → · BLUETTI AC200MAX →
Written by Ian SchneiderUpdated
Solar & Off-Grid Tester, Station Arena Test Desk
Spec deltas
The AC200MAX gets through an 8-hour blackout and the AC180P doesn't. The bigger unit finishes with 96Wh left, which is a pass rather than a cushion; the smaller one comes up 421Wh short, around hour six if the load ran evenly. That one row is most of the case for the bigger box. It's also a box BLUETTI no longer sells. The store has had the AC200MAX sold out since July 2026, so this page shows it no price, and the AC200L has taken its place.
It isn't the better-built box, though. The AC180P is 26.6 lbs lighter, gets back to 80% from the wall in about 45 minutes in reviewers' testingA1A2, and is the only one of the two with a published UPS switchover, no worse than 20ms. Its weakness is the ceiling. At 1,440Wh it's sealed, and BLUETTI's add-on packs can only recharge it, not extend itA3.
So decide where it lives. A battery that waits in a hallway closet for the grid to fail wants what the AC200MAX has, extra capacity, an expansion port and 900W of solar input, which today means the AC200L or an AC200MAX from leftover stock. A battery that rides in a trunk, sits beside a bed or guards a router should be the AC180P.
What the Numbers Reveal
Each conclusion stated first — the numbers behind it on one line, the full analysis below.
That splits buyers by whether anyone is home. With someone there to plug in the fridge, the AC200MAX's 517Wh of extra usable energy (1,741 minus 1,224) is the spec that matters. For a router, a NAS or a CPAP that has to ride through unattended at 3 a.m., the switchover comes first, and the AC180P is the only one that publishes one.
8-Hour Blackout needs 1,645Wh: the AC180P has 1,224Wh usable and comes up 421Wh short; the AC200MAX has 1,741Wh usable and finishes with 96Wh spareThe AC180P's UPS switchover is rated no worse than 20ms; our record carries no switchover figure for the AC200MAX
Why it mattersIf you're buying for a long outage with you in the house, you want the AC200MAX's capacity, which today means the AC200L; if it's for surprise outages hitting electronics that can't blink, the AC180P is the safer bet.
solar input
In a grid-down week the wall doesn't exist, so the AC200MAX's solar edge is the one that keeps it cycling day after day, even though real panels rarely hold their full rating. With the grid up, before a trip or between storms, the AC180P is ready to leave the house while the AC200MAX is still charging.
Solar input: 900W on the AC200MAX against 500W on the AC180PWall charging: the AC180P reaches 0-80% in about 45 minutes in testingA1A2; the AC200MAX takes roughly two hours to get most of a chargeB2
Why it mattersAnyone pairing this with panels for multi-day outages should lean AC200MAX; anyone who tops up at home before heading out should lean AC180P.
Expansion buys capacity, not longevity, since the cells carry the same 3,500-cycle rating either way. It also puts you on the older platform: reviewers consistently describe the AC200MAX as the generation the AC200L was built to improve, citing slow charging and a weak appB2B3.
Weekend Camping needs 2,100Wh: the AC200MAX is 359Wh short, the AC180P 876Wh shortThe AC200MAX accepts BLUETTI expansion batteries; the AC180P has no expansion port, and B-series packs only recharge it through Power Bank ModeA3Both carry the same 3,500-cycle rating
Why it mattersCampers who know they'll want whole weekends eventually should start on an expandable base, and the AC200MAX is that base if they can still find one; anyone sure that 1,440Wh covers them loses nothing with the sealed AC180P.
The specific dimensions that decide these two units — everything else is a tie.
Your Life, Your Pick
Selected because: The 8-Hour Blackout is the only row where one unit finishes and the other doesn't, and the one that finishes has just 96Wh to spare.
Eight hours without power is where this pair stops being a matter of taste. After the flat 85% derate the AC180P has 1,224Wh to give against a 1,645Wh load, so it quits about three-quarters of the way through. The AC200MAX finishes with 96Wh in hand: a pass, but anything you didn't plan for eats that margin before the lights come back.
Remote Workday and Tailgate Party also go to the AC200MAX, on reserve rather than capability; the AC180P finishes both with 314Wh and 554Wh left. CPAP Overnight goes the AC180P's way for reasons that have nothing to do with capacity. Weekend Camping and Van Life Daily beat both, and the weekend is the one row where the AC200MAX's expansion port turns a 359Wh miss into a shopping list.
What the Specs Don't Tell You
Selected because: The two most useful cards point at different units: a ≤20ms UPS switchover on the AC180P, a 4,800W surge ceiling on the AC200MAX.
The AC180P publishes a UPS switchover of no worse than 20ms, so a router, a CPAP or a desktop on its outlets rides through the grid dropping without anyone touching it. Our record carries no switchover figure for the AC200MAX. Plan on it as a battery you move things onto, not one that catches them.
The AC200MAX answers with the higher motor ceiling, a 4,800W peak against 2,700W. That 2,100W gap matters for well pumps, window units and shop tools, and not at all for a 400W tailgate. Read the fan-noise card loosely, since both numbers are BLUETTI's own ratings rather than a shared bench test. The warranty card is real but conditional: the AC180P's 5 years is the maximum, earned by buying direct or registering, against 4 years on the AC200MAX.
Growth Path
Selected because: Only the AC200MAX takes expansion batteries; the AC180P stops at 1,440Wh for good.
solar input
The AC180P's ceiling is the box. There's no expansion port; BLUETTI's B80, B230 and B300 packs can recharge it through Power Bank Mode, but that's a second battery feeding the firstA3. Size it right on day one, because 1,440Wh is what you'll own for as long as you own it.
The AC200MAX starts 608Wh ahead and keeps going with BLUETTI expansion batteries. Two things temper that. The cells carry the same 3,500-cycle rating as the AC180P's, so you're adding capacity, not years. And the platform is the older one, which our research found almost always discussed against the newer AC200LB0. Real expansion, on a design BLUETTI has since improved onB3.
Portability & Form Factor
Selected because: 26.6 lbs separate them, and the heavier box carries less battery per pound.
weight
35.3 lbs goes from trunk to picnic table in one hand. 61.9 lbs is a bent-knees, two-hand lift, and the 26.6 lbs between them doesn't buy a proportionate battery: pound for pound, the AC180P carries about a quarter more watt-hours (1,440Wh in 35.3 lbs against 2,048Wh in 61.9). The older design shows up on the scale.
What the extra weight does carry is equipment the AC180P lacks: a TT-30 RV outlet, the expansion port, the bigger inverter. Those are reasons to own a heavy box, not to haul one around. Carry the AC180P to the tailgate; move the AC200MAX once, to wherever it's going to live.
Strengths & trade-offs
BLUETTI AC180P
Strengths
- +Lighter by 26.6 lb
- +Longer warranty
Trade-offs
- –Sealed capacity — the AC200MAX can add batteries to grow past 1,440Wh; this one can't.
BLUETTI AC200MAX
Strengths
- +Larger battery capacity
- +Higher AC output
- +Faster solar charging
Trade-offs
- –Significantly heavier (+26.6 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
Neither carries a 2,100Wh weekend on one charge. The AC200MAX comes closest, 359Wh short against the AC180P's 876Wh, and it's the only one of the two that can close its gap with an expansion battery.
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
The AC200MAX finishes with 96Wh left, a pass with almost nothing banked. The AC180P runs dry 421Wh short, about three-quarters of the way through. This is the row that justifies the bigger box.
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 cover a night of CPAP several times over, so capacity doesn't decide this one. The AC180P wins on the outlet you plug into: it publishes a UPS switchover of no worse than 20ms, so the CPAP keeps running if the grid drops at 3 a.m. Neither noise rating describes a 40W draw, so check hands-on reports before either goes next to the pillow.
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
AC200MAX
The AC200MAX clears the workday at 52% used, banking 831Wh — late work, extra calls, or a second laptop charge without arithmetic. The AC180P at 74% also finishes, with 314Wh 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
Both handle game day; the AC200MAX keeps more in reserve (38% used vs 55%). Tailgating is a light load, though, so the number you'll feel is weight: 35.3 lbs for the AC180P against 61.9 lbs for the AC200MAX, from the trunk to the setup spot.
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 covers this scenario's 4,685Wh: the AC180P comes up 3,461Wh short (about 26% covered), the AC200MAX 2,944Wh (37%). Treat this as partial cover — enough for the essentials in it, not the whole list.
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: AC200MAX runs 8.5h vs 6h.
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 0–116.1hComfort & 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
November 1, 2026
Verdict withdrawn: the AC200MAX is no longer sold
We picked the AC200MAX, but it's been discontinued (BLUETTI now points buyers to the AC200L). The AC180P is still on sale, but that alone doesn't make it our pick. The comparison below is still accurate if you own either one.
Editor-assigned confidence, based on cited owner research and spec analysis.
Written by Ian Schneider, Solar & Off-Grid Tester · Station Arena Test Desk · Updated November 1, 2026
Black Friday · 26 days out
Price to beat:AC180P $599
The lowest we have recorded. A Black Friday price above it is a sale this unit has already had.
Measured Data
Benchmark scores and the full spec record, side by side.
Benchmark scores
Not rated for both units (minimum threshold unmet): UPS, CPAP, Camping.
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, AC180P rates 4.2/5 (54th percentile of 27 Everyday-class units), and AC200MAX rates 3.5/5 (11th percentile of 28 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.
AC200MAX: 61.9 lbs Is a Commitment
At 61.9 lbs, this is manageable but not fun to move. That's heavier than a large checked suitcase. How much it costs you depends on whether it rolls — wheels and a telescoping handle change the job completely at this weight, and our spec record doesn't track them, so look at the product photos before you plan on carrying it from the car.
Fan Noise: Two Published Ratings
The AC180P 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.
AC180P: 1,440Wh Is the Whole Plan
There's no expansion port. BLUETTI's add-on packs can recharge it through Power Bank Mode, but that's a second battery topping up the first, not one bigger battery. The AC200MAX does take expansion batteries, though its first advantage is the 608Wh head start it ships with.
AC180P: Power Lifting to 2,700W
The AC180P has BLUETTI's Power Lifting mode, which runs a resistive appliance rated up to 2,700W from its 1,800W 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; for motor loads the figure to read is the AC180P's separate 2,700W surge peak, not this one. And it is not a reason to size down, because running a load that big from 1,440Wh 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.
4,800W vs 2,700W: The Ceiling Starts the Motor
The AC200MAX peaks at 4,800W on a 2,200W inverter; the AC180P at 2,700W on 1,800W. Ratios aside, the ceiling decides whether a compressor or a pump starts, and the AC200MAX's sits 2,100W higher. Before ruling the AC180P out, check your heaviest motor's startup draw against its 2,700W rather than assuming it trips.
Only the AC180P Publishes a Switchover Time
Plug a router, a desktop or a CPAP into the AC180P while it's on the wall and it hands them to battery in no worse than 20ms when the grid drops. That's inside what most electronics tolerate; the fussiest PC power supplies sit near the line. Our record carries no switchover figure for the AC200MAX, so treat it as a battery you move things onto, not one that catches them.
Warranty: 5 Years vs 4
The AC180P is covered for 5 years against the AC200MAX's 4 years. The AC180P'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.
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 AC180P works out at $0.13/kWh over its rated life. If you already own the AC200MAX, the hardware comparison still holds: over its rated life the AC180P delivers about 5,040 kWh and the AC200MAX about 7,168 kWh. One thing to know reading the table: both carry the same 3,500-cycle rating, so the lifetime rows are sticker price and capacity in disguise — the wear horizon is identical and decides nothing here.
Growth path
AC180P
FIXED CAPACITYFixed at 1,440Wh, with no expansion — so size it for your needs up front rather than planning to add capacity later.
Accepts up to 500W of solar. Suitable for a 1-2 panel setup.
Adequate ports for most setups, but heavy users may want a power strip.
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.
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 AC180P: it is sealed at 1,440Wh, so buy the size that covers you now. The AC200MAX's expandability still matters if you already own one, but it isn't a reason to pick it over the AC180P.
What Owners Report
Patterns from published owner reports and long-term reviews — every claim cited to its source below.
BLUETTI AC180P
Reviewer coverage is broad and mostly warm: a 4.6-star average across 708 verified Amazon purchases, and testers who confirmed the Turbo Charge claim of 0-80% in about 45 minutesA1A2. Power Lifting Mode, which pushes 2,700W to higher-draw devices, gets credit as a useful extraA1.
The correction that keeps coming up is about expansion. Some listings imply the AC180P takes B80, B230 or B300 packs as added capacity; buyer's guides set the record straight that those packs only recharge it through Power Bank ModeA3. Reviewers call its weight fine for base camp and a real constraint over any distance, though that source may describe a sibling modelA4.
“Delivers 1,440Wh of LiFePO4 capacity and 1,800W continuous output, with a Turbo Charge feature reaching 0-80% in roughly 45 minutes and a Power Lifting Mode that delivers 2,700W to run high-powered devices.”
Sources
backuppowerhub.com · bluettipower.com · batteryskills.com · the-gadgeteer.com · bestgeneratorsolar.com
BLUETTI AC200MAX
Coverage of the AC200MAX almost always runs through its successor, and the comparison isn't kindB0. One test measured its fans well into the 50s dBA under load at a meter, against an AC200L that stayed barely audibleB1. Slow wall charging, roughly two hours to most of a charge, is called a common frustrationB2.
Under the complaints sits a unit reviewers still call solid and well liked: expandable, LiFePO4 cells rated around 3,500 cycles, a 4-year warrantyB4. The recurring list, slow charging, an app that feels like an afterthought and an aging design, is exactly what the AC200L was built to addressB3.
“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
Sources & Research Notes
Every owner claim in this report is traceable to a published source. The bracketed references above resolve here.
Recurring owner themes
- Fast Turbo charging, strong owner ratings, and a useful Power Lifting Mode are the praise; the key clarification is that it does NOT accept true battery expansion despite some listings. [AC180P · 3 entries]
- The AC200MAX is the older generation — louder, slower to charge, weaker app — that the AC200L was built to improve on. [AC200MAX · 3 entries]
- A1
“Delivers 1,440Wh of LiFePO4 capacity and 1,800W continuous output, with a Turbo Charge feature reaching 0-80% in roughly 45 minutes and a Power Lifting Mode that delivers 2,700W to run high-powered devices.”
backuppowerhub.com / bluettipower.com — AC180P review · 2025-2026 · [positive]
- A2
“Holds a strong 4.6-star rating from 708 verified Amazon purchasers; reviewers confirm the 0-80% in 45 minutes claim held true in testing.”
batteryskills.com / the-gadgeteer.com — AC180P review · 2025-2026 · [positive]
- A3
“Does not include a battery expansion port and does not support capacity expansion with B80, B230, or B300 batteries — contrary to some listings — though it can be charged by such batteries through Power Bank Mode.”
bestgeneratorsolar.com / backuppowerhub.com — AC180P buyer's guide · 2025-2026 · [mixed]
- A4
“Weight is cited around 35 lbs in most listings (one source lists ~28.7 lbs) — manageable for base camp or car camping, more of a constraint for backpacking or carrying any distance.”
backuppowerhub.com / batteryskills.com — AC180P review · 2025-2026 · [mixed]
- B1
“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]
- B2
“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]
- B3
“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]
- B4
“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]
Research compiled November 1, 2026.
Who Should Buy Which
Buy the AC180P if you…
- →You'll carry it: car to campsite, basement to kitchen, in and out of the van. At 35.3 lbs it's a one-hand job, and the AC200MAX isn't.
- →It sits between the wall and a CPAP, a router or a desktop, and you want it to catch an outage at 3 a.m. without you. The AC180P publishes a switchover of no worse than 20ms.
- →You top up from the wall before trips and want it back fast: reviewers clocked 0-80% in about 45 minutesA1A2.
Buy the AC200MAX if you…
- →It's for the house: a closet battery for the next storm, where finishing an 8-hour outage matters more than how heavy it is to move once.
- →You have panels or plan to: 900W of solar input refills its 2,048Wh sooner than the AC180P refills its 1,440Wh.
- →You own an RV with a TT-30 shore cord, or you want room to grow with BLUETTI expansion batteries later.
If neither fits
Close this tab if all you run is a CPAP on camping weekends: both cover a night several times over, and a smaller, lighter station does that job without the bulk. And if you need a full weekend off-grid (about 2,100Wh) or van life every day (about 4,685Wh), neither works as bought; look at a larger home-backup station with expansion built in rather than stretching either of these.
The Bottom Line
The AC200MAX is the backup battery of the two. It's the one that finishes eight hours without the grid, the one that refills faster from the sun, and the only one that can grow after that. Just know the blackout pass is a narrow one, that it's the older design, and that BLUETTI no longer sells it. If backup is the job, buy the AC200L, the unit that replaced it, and we compare it with the AC180P on its own page.
Buy the AC180P if it moves, sits beside a bed or guards something that can't blink. It's lighter, quicker off the wall, still on sale and the one that catches the outage. Size it right the day you buy it, because the box you bring home is the biggest it will ever be.
Frequently Asked Questions
Answers drawn from the spec record and cited owner research.
AC180P or AC200MAX for home backup?
The AC200MAX, on the numbers. It finishes our 8-hour blackout load with 96Wh left, while the AC180P comes up 421Wh short. It also takes expansion batteries and 900W of solar, which is what keeps a backup going past day one. BLUETTI no longer sells it, so for a new purchase that points at the AC200L. The one thing the AC180P does better in a blackout is catch it: its UPS switchover is rated no worse than 20ms, and our record has no such figure for the AC200MAX.
Can you expand the BLUETTI AC180P?
No. It has no expansion port. B80, B230 and B300 packs can recharge it through Power Bank Mode, but they don't add to its 1,440Wh. If expansion is on your list, the AC200MAX is the one of these two built for it.
Is the AC200MAX worth seeking out over the AC180P?
For backup, on specs, yes: 608Wh more battery, an expansion path, a TT-30 RV outlet, 900W of solar input and a 4,800W surge ceiling. But BLUETTI no longer sells it, so this page shows it no price, and the AC200L is the live unit with that job. For carrying, no: it adds 26.6 lbs and gives up the AC180P's published UPS switchover and its 45-minute wall refill to 80%.
Is the BLUETTI AC200MAX outdated?
It's the older design, and our research found it almost always discussed against the newer AC200L. Reviewers point to slow wall charging, roughly two hours to most of a charge, and louder fans under load as what the AC200L improved. It still carries the same 3,500-cycle rating as the AC180P and a 4-year warranty.
Which is better for a CPAP, the AC180P or the AC200MAX?
The AC180P. Both cover a 320Wh night with plenty left, so capacity doesn't decide it. Its UPS switchover of no worse than 20ms keeps the CPAP running if the grid drops while you sleep, and it's the lighter box to keep bedside. Neither published noise rating describes a 40W draw, so look for hands-on reports before trusting either at pillow distance.
Related comparisons
Where to buy
BLUETTI AC180P
$649.00
$649.00 · direct from BLUETTI
Last checked 28 days ago. Prices move — check before you buy.
BLUETTI AC200MAX
Sold out at BLUETTI
Prices may vary by retailer and are subject to change.