Bluetti AC180 Review: specs and runtime

Specifications checked against manufacturer pages on 2026-08-23.

The Bluetti AC180 is a 1,152 Wh portable power station in the 1 kWh-class bracket, with a 1,800 W continuous inverter and LiFePO4 cells. This page transcribes the manufacturer’s specifications as they stood on 2026-08-23, turns the capacity into appliance hours, and names the rows Bluetti does not fill in. Quoted figures carry a source; calculated ones carry a formula.

In short. 1,152 Wh in the 1 kWh-class band: $0.43/Wh at the list price we recorded; 32.6 Wh per pound; 3,500 rated cycles to 80%. On our assumptions a full-size refrigerator calculates to 18–19 hr, and a 40 W CPAP calculates to 20–24 hr. We could not fill 3 rows from Bluetti’s page. They are listed below, not guessed. A 2,700 W boost figure is published, but it is rated for resistive loads, so we do not read it as motor-start headroom. Hours are calculated from rated capacity, never measured.

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Check the current price

Bluetti AC180 on Amazon

The link goes to the exact base unit whose specifications are on this page, not a bundle. Amazon prices change daily.

Who it is for, and who should skip it

Two lists, both drawn from the table further down.

It fits if

A refrigerator is what you are saving. It clears a 12-hour outage on our assumptions with about 6 hours to spare.
One night of CPAP, with a caveat. A 40 W machine without a humidifier runs the night with margin, though the maker states no switchover time, so we cannot say the machine rides through the transfer. A heated humidifier changes that arithmetic.
The unit has to move. 35.3 lb is a two-hands lift rather than a cart job, so car to porch to basement is realistic.

Skip it if

You want resistive heat. A 1,500 W heater empties this unit in 0.6–0.7 hr. Heat is what batteries are worst at.
A hard-starting motor is the point. Bluetti publishes no motor-start surge rating here, so published figures cannot confirm it spins up a pump or a compressor with an unusual inrush.
You need a seamless handover. Bluetti states no UPS transfer time, so a desktop or a CPAP may notice the gap.

Every published specification

Each footnote below points at the sentence a figure came from. Two phrases matter: “Manufacturer does not state” means the maker is silent, “Not yet verified by CalmWatt” means we are.

Specification	Bluetti AC180
Rated capacity	1,152 Wh¹
Usable capacity (calculated)^*	979–1037 Wh
Continuous AC output	1,800 W²
Surge output	No conventional surge stated (2,700 W boost mode)³
Full recharge from wall	Manufacturer does not state (0–80% in 45 min)⁴
Cell chemistry	LiFePO4⁵
Rated cycle life	3,500+ cycles to 80%⁶
UPS switchover	Manufacturer does not state
Expandable	No⁷
Max solar input	500 W⁸
Max AC charging input	1,440 W⁹
AC outlets	4¹⁰
Highest USB-C port	100 W¹¹
App control	Yes¹²
Stated noise	Manufacturer does not state
Warranty	5 years¹³
Weight	35.3 lb¹⁴
Manufacturer list price when checked	$499¹⁵

^* Our calculation, not a published figure: rated capacity × an assumed 85–90% conversion efficiency.

Notes on the figures

AC180, rated capacity: 1,152Wh (AC180) / 1,440Wh (AC180P)
AC180, continuous output: 4 x 120V/15A 1800W In Total
AC180, surge: The spec table labels this “Surge Power”, but the same 2,700 W figure is Bluetti’s Power Lifting Mode for resistive heating loads (FAQ Q1: “AC180 can run high-power heating devices up to 2,700W … Do NOT use this unit to run an air conditioner or washing machine.”). Treat as a boost mode for resistive loads; it is not a conventional motor-start surge rating and should not be read as one.
AC180, recharge: Bluetti publishes a 0–80% time (45 minutes), not a full-charge time.
AC180, cell chemistry: LiFePO₄ (Lithium Iron Phosphate)
AC180, cycle life: 3,500+ Cycles to 80% Original Capacity
AC180, expandable: Bluetti’s B-series batteries can charge the AC180 but do not extend its capacity as a single system.
AC180, solar input: Solar Input: 500W Max., VOC 12-60VDC, 10A
AC180, AC input: Turbo Mode figure from SPECS > INPUT.
AC180, AC outlets: From SPECS > OUTPUT.
AC180, USB-C: From SPECS > OUTPUT.
AC180, app: Bluetooth only; the page does not claim Wi-Fi.
AC180, warranty: From SPECS > GENERAL.
AC180, weight: Bluetti’s page gives 35.3 lb in the spec table and 37 lb in the description; we use the spec table.
AC180, price: Manufacturer price when checked; no separate list price was shown.

What Bluetti does not state

A specification sheet is as informative in what it omits as in what it lists. Every gap on this unit’s page, named rather than quietly filled in. That places it with the 29 of 34 transcribed units that leave a gap; this one leaves 3 figures.

A full wall-charge time. Absent from Bluetti’s specifications for this unit when we checked.
Ups switchover time. Absent from Bluetti’s specifications for this unit when we checked.
Operating noise. Absent from Bluetti’s specifications for this unit when we checked.
A motor-start surge rating. The 2,700 W figure Bluetti publishes is a boost mode for resistive loads, so it does not answer whether a compressor starts. We do not treat it as if it did.
Usable capacity. No maker in our database publishes one. Rated capacity is the cells; what reaches the outlet is less, and the gap moves with the load.

None of this makes the unit worse than its rivals; most makers omit most of these. It does mean any page quoting a confident number for one of them is quoting an estimate.

What it runs, and for how long

Same appliances and assumptions we use on every comparison page, so these rows read against any other unit on this site.

Appliance	AC180
Full-size refrigerator 150 W, 900 W start, 35% duty · eff. 80%–87%	18–19 hr
Mini fridge 70 W, 400 W start, 30% duty · eff. 70%–82%	38–45 hr
CPAP without humidifier 40 W · eff. 70%–82%	20–24 hr
CPAP with heated humidifier 95 W · eff. 80%–87%	9.7–10.5 hr
Gas furnace blower 400 W, 1600 W start, 40% duty · eff. 85%–90%	6.1–6.5 hr
1/3 hp sump pump 500 W, 1800 W start, 15% duty · eff. 85%–90%	13–14 hr (start-up not assessed)
Router and modem 20 W · eff. 70%–82%	40–47 hr
Laptop 60 W · eff. 70%–82%	13–16 hr
1500W space heater 1500 W · eff. 82%–88%	0.6–0.7 hr

Arithmetic, not a measurement: hours = rated Wh × efficiency ÷ (appliance W × duty). Appliance and efficiency assumptions live on How we verify. A row reading “Unlikely to start” failed the surge check, not the capacity one. “Start-up not assessed”: the start-up draw meets or exceeds the continuous rating and no conventional surge rating exists to check it against, so the hours assume the motor starts.

The same specs, normalized

Measure	AC180
Cost per watt-hour	$0.43/Wh
Watt-hours per pound	32.6 Wh/lb
Surge headroom	Not applicable — the stated figure is a boost-mode rating, not a motor-start surge.
Recharge rate	Not available — Bluetti does not state a full wall-charge time.
Rated cycle life	3,500 cycles to 80%
Continuous watts per dollar	3.61 W/$

Ratios have no winner here — there is no second column. Each one is defined, with its direction, on How we verify.

What those figures actually mean

Cost per watt-hour: $0.43/Wh. The $499 list price we recorded over 1,152 Wh of rated capacity. This is the number to carry between listings; a discount changes it in proportion, so ours is only true for the day we recorded it.

Watt-hours per pound: 32.6 Wh/lb. 1,152 Wh in 35.3 lb makes this a two-hands lift. Density is what lithium iron phosphate gives up to older chemistries; the cycle rating is what it buys in return.

Surge headroom: not applicable. Bluetti’s boost figure is rated for resistive loads, so dividing it by the continuous rating would describe a heater, not a compressor. We leave the row empty.

Rated cycle life: 3,500 cycles to 80% capacity. Cycled weekly it would take about 67 years to get there, so for a few outages a year the cell count is not the limit. For daily off-grid use it is. The percentage matters as much as the count: two ratings only compare when they name the same remaining capacity.

Continuous watts per dollar: 3.61 W/$. Output for the money rather than storage for the money. Which of the two you should read depends on whether your outage is a big load or a long one.

Where it sits in our database

The obvious missing question on a one-unit page is whether these numbers are good. Here is where each lands among the units we have verified.

Measure	AC180	Among verified units
Rated capacity	1,152 Wh	17th largest of 34
Continuous AC output	1,800 W	18th highest of 34
Cost per watt-hour	$0.43/Wh	2nd cheapest of 32
Watt-hours per pound	32.6 Wh/lb	28th densest of 34
Weight	35.3 lb	20th lightest of 34

A low rank on weight is a high rank on portability. Nothing in this table is a verdict. The row built on price uses the manufacturer list price recorded on 2026-08-23; the retail price behind our link moves independently, so recompute that row against what you are shown.

Three outages, and the figure that decides each

One night, one CPAP. A 40 W CPAP without a humidifier calculates to 20–24 hr. With no stated switchover time, published figures cannot say whether it rides through the transfer or restarts.
Twelve hours, one refrigerator. A typical full-size refrigerator calculates to 18–19 hr.
The loads people forget. A gas furnace blower calculates to 6.1–6.5 hr and a one-third horsepower sump pump calculates to 13–14 hr (start-up not assessed). Neither is a cord-and-plug load in a typical house, whatever these hours say. A router and modem, meanwhile, calculates to 40–47 hr.
Three days, with something to recharge from. The maker states no full wall-charge time, and it accepts up to 500 W of solar, so day two turns on your panels and your sky.

The AC180 against other units

8 pages on this site compare the AC180 directly with another unit, using the table above on both sides.

Questions people ask about the AC180

Answers use only the figures on this page.

How long will the AC180 run a refrigerator?

18–19 hr on our assumptions for a typical full-size unit at 150 W running and a 35% duty cycle. Start-up is the check that comes before hours. Your own compliance label is the number that matters.

Can the AC180 run a CPAP all night?

Yes on capacity: a 40 W machine without a humidifier calculates to 20–24 hr against the eight hours a night usually needs. No switchover time is stated, so we cannot say whether it restarts. A heated humidifier roughly doubles the draw.

How much does the AC180 weigh?

35.3 lb on the maker’s figure, or 32.6 Wh of rated capacity carried per pound. That is a two-hands lift, which is why units this size tend to stay where you put them.

How many cycles is the AC180 rated for?

3,500 cycles to 80% of original capacity, on LiFePO4 cells, which is roughly 67 years at one cycle a week. Compare it only with ratings quoted to the same remaining capacity.

Will the AC180 run a space heater?

It will, and it will empty the battery in 0.6–0.7 hr. Resistive heat drains any battery this size faster than anything else you can plug in.

What does the AC180 cost per watt-hour?

$0.43/Wh at the $499 list price we recorded. Sale prices move weekly, so recompute against the price you are offered.