BLUETTI AC50P: Specs, Runtimes and What Replaced It

How this page makes money. Some links on this page are affiliate links: if you buy through them we may earn a commission (on this page: BLUETTI and Amazon). As an Amazon Associate we earn from qualifying purchases. Brands that pay us nothing are included wherever leaving them out would make a comparison less useful.

Manufacturer price at the time of writing. We may earn a commission, which never changes what the figures say.

The BLUETTI AC50P is a 504 Wh LiFePO4 power station with a 700 W AC inverter, a 1,200 W surge rating and a 200 W solar input. After the 15% allowance for conversion losses used on this page, that is about 428 Wh of usable AC energy: roughly 7 hours for a 60 W laptop, 10 hours 43 minutes for a CPAP with the humidifier off (40 W from the AC outlet), and under 3 hours for a refrigerator while its compressor is running. Below are the specs, the runtimes, the solar math, what changed when the AC50B took over its slot, and who should still consider a leftover unit.

If you are looking at a leftover AC50P

Three practical points, none of which we can settle for you from here.

• Stock. Treat any listing as leftover stock rather than a current product. Check that it says AC50P and 504 Wh, because the AC50B has a near-identical name and is a 448 Wh unit.
• Warranty. BLUETTI lists a 5-year warranty for the AC50P. Whether a particular leftover unit still carries it, when the term started and whether the unit must be registered are questions only the seller and BLUETTI can answer, and the answer can differ between a retailer clearing stock and a marketplace reseller. Ask before paying and keep the invoice.
• Price. There is no price promise here. Discontinued stock is repriced or sells out without notice, so use the last listed $339 only as a yardstick for whether a listing looks reasonable.

BLUETTI AC50P specifications

The cycle count and the warranty are separate promises. BLUETTI rates the AC50P for 3,000+ cycles to 80% of original capacity, so the rating does not mean 3,000 cycles at full capacity. Spread the last listed price across the rated life (3,000 cycles × 0.504 kWh = 1,512 kWh) and the AC50P comes to about 22 cents per kWh stored, before conversion losses. The AC50B works out to about 30 cents on the same arithmetic ($399 over 1,344 kWh). Set either against your own utility rate.

What the AC50P runs, and for how long

Method, stated once: runtime = Wh × 0.85 ÷ watts. The 0.85 is an allowance for inverter and conversion losses, so the AC50P’s 504 Wh becomes 428.4 Wh and the AC50B’s 448 Wh becomes 380.8 Wh. Real runtimes come in lower when the pack is cold, when the load is spiky, or when the inverter idles with little attached. The table is a ceiling, not a measurement.

Refrigerators. The 150 W line assumes the compressor never stops. The 60 W line is 150 W at a 40% duty cycle, the planning figure used in our refrigerator wattage guide. Real fridges land between the two, and a hot room pushes the average up. Even the favorable 7 hours covers about 30% of the 1,440 Wh a day that average implies (60 W × 24 h), so the AC50P bridges a few hours of an outage, not a day.

CPAP. A night at 40 W is 320 Wh, which fits inside 428 Wh with about a third of a second night left over. With the humidifier on at 80 W the same night needs 640 Wh, so the pack runs dry after about 5 hours 20 minutes. Draws vary by machine; the CPAP wattage guide has the ranges.

The 700 W limit. At the full rated load the AC50P empties in about 37 minutes. A 1,500 W space heater is far outside it, and the 1,200 W surge rating covers startup spikes only, not running load.

Recharging from the wall and from solar

The AC50P accepts up to 600 W from a wall outlet. 504 ÷ 600 is 0.84 hours, so even with no losses and no taper a full charge takes about 50 minutes; real charging takes longer, and BLUETTI quotes 50 minutes to 80% and 80 minutes to full. The AC50B’s 580 W input gives a floor of about 46 minutes by the same arithmetic.

Solar input tops out at 200 W. Panels rarely deliver their label rating, and our solar output guide suggests planning on 70 to 80% in good conditions, so the table uses the cautious 70%. Recharge hours = Wh ÷ (panel watts × 0.7).

Panel watts beyond the 200 W input limit are wasted, apart from helping on hazy days when the array falls short of the cap. Hours of charging are also not hours of daylight. At 4 to 5 usable sun hours, the summer figure in the solar output guide, 140 W delivers 560 to 700 Wh, enough to refill the AC50P from empty in a day. At the 2 to 3 sun hours the same guide gives for winter at mid-northern latitudes, it delivers 280 to 420 Wh, which is 56% to 83% of the pack. BLUETTI lists a 12-28 V open-circuit voltage window at up to 8.5 A and asks for panels with MC4 connectors, so check both against any panel you already own.

AC50P vs AC50B: what changed

The nearest current replacement is the BLUETTI AC50B. It sits in the same slot, with the same 700 W output, chemistry, cycle rating, warranty and solar input. The differences are below.

Capacity is the change that matters. Every runtime in the table above drops by 11%: the laptop goes from 7 h 08 min to 6 h 21 min and the router from 42 h 50 min to 38 h 05 min. Across the 16 BLUETTI models we track prices for, the median is about $0.515 per Wh as of October 2026, so both of these small units sit well above it.

The surge drop bites in one narrow case. 1,000 W is still above the 700 W continuous rating, so ordinary startup spikes fit. Only a load whose spike lands between 1,000 W and 1,200 W separates the two.

On price, the leftover wins on paper. The AC50B costs more and stores less. Its case is that it is a current product, which sidesteps the leftover-stock and warranty questions above.

Other 400 to 700 Wh power stations

Besides the AC50B, three current power stations we track fall between 400 and 700 Wh. Discontinued and refurbished units are left out.

EcoFlow RIVER 2 Max 500. Close to the AC50P on capacity (499 Wh against 504) and about 1.7 lb lighter, with a 500 W inverter, 200 W below the AC50P, and a 1,000 W surge rating. EcoFlow rates it for 3,000 cycles to 80% capacity, lists a 220 W solar input and quotes a fastest full recharge of 60 minutes, but its product page states no warranty term (checked October 2026). It has the lowest price per Wh of the four units in this band.

Goal Zero Yeti 700. At 677 Wh it stores 173 Wh (34%) more than the AC50P, with a higher cycle rating, the same 5-year warranty and the same 200 W solar input. Goal Zero lists 600 W of continuous AC output, 100 W below the AC50P, and a 1,000 W surge. It is also 5.2 lb heavier, and has the highest price per Wh of the four.

Jackery Explorer 500. Listed at $359, about $0.69 per Wh, close to the AC50P’s last listed $0.67. It has 518 Wh, but Li-ion cells rated for 800 cycles and a 2-year warranty, against 3,000 cycles and 5 years. Jackery lists 500 W of continuous AC output, 200 W below the AC50P’s 700 W inverter, and a 1,000 W surge. Jackery’s Explorer 500 product page now redirects to a newer model, so its solar input is left blank in the table.

Should you still buy a leftover AC50P?

Buy one if

• The seller will put the warranty terms in writing and accept a return, and the price is at or below the last listed $339. At list prices the AC50B costs $60 more for 56 Wh less.
• Your loads sit well under 700 W: a laptop, a router, a TV, phone charging, lights, or a CPAP without the humidifier. Think weekend camping or a short outage rather than a fridge for a day.
• You want LiFePO4 rated for 3,000 cycles in a 15.1 lb package, and the extra 56 Wh and 200 W of surge over the AC50B are worth chasing.

Buy something else if

• The only listing is a third-party seller who cannot confirm the warranty. Buying a current BLUETTI AC50B avoids the question; BLUETTI lists it at $399.
• You need more than 428 usable Wh. A full night of CPAP with the humidifier (640 Wh at 80 W for 8 hours) or a fridge for more than a few hours does not fit. The BLUETTI AC70 has 768 Wh (about 653 Wh usable, or 8 h 10 min of a humidified CPAP at 80 W), a 1,000 W inverter, 1,500 W surge, 500 W of solar input and 3,000 rated cycles with a 5-year warranty. It weighs 22.5 lb, 7.4 lb more than the AC50P, and lists for $359, about $0.47 per Wh.
• You only need phones, a router and a laptop. The BLUETTI Elite 30 V2 is 288 Wh (about 245 Wh usable, or 4 hours of a 60 W laptop), 600 W, 9.5 lb, and lists for $239. It is 5.6 lb lighter than the AC50P.
• You need to run anything over 700 W. By the makers’ figures, no unit we track in the 400 to 700 Wh band lists more than the 700 W of the AC50P and AC50B, and the AC70 above stops at 1,000 W. Add up the running watts of everything you plan to run at once, and our sizing guide covers how to pick the size.

BLUETTI AC50P questions

Does a leftover AC50P still come with the 5-year warranty?

We cannot tell from here. BLUETTI lists 5 years for the model, which is the manufacturer’s term, not a statement about the particular unit in a listing. Ask the seller in writing whether the term applies to that unit, when it starts and whether it covers a buyer who purchased from that seller, and ask BLUETTI whether the serial number must be registered. Keep the invoice. If either answer is vague, a current AC50B listing is the safer purchase.

Is the AC50B just an AC50P with a new name?

No. By BLUETTI’s figures the output, chemistry, cycle rating, warranty and solar input are the same, but the AC50B stores 448 Wh instead of 504 Wh, has a 1,000 W surge rating instead of 1,200 W, and takes 580 W from the wall instead of 600 W. The table above lines them up side by side.

How many CPAP nights does one charge give?

One night with the humidifier off: 40 W for 8 hours is 320 Wh, against 428 Wh usable. With the humidifier on at 80 W the night needs 640 Wh, so the AC50P covers about 5 hours 20 minutes of it. A second night needs a recharge in between.

Will one 200 W panel refill the AC50P in a day?

In summer sun, probably. At 70% of rating a 200 W panel delivers 140 W, so 4 to 5 sun hours gives 560 to 700 Wh against the 504 Wh needed. In winter, at 2 to 3 sun hours, it reaches 56% to 83% of the pack. The input limit is 200 W, so a bigger array does not charge it faster than the 2 h 31 min floor.

How the figures on this page were produced

The AC50P figures are BLUETTI’s published specifications for the discontinued model, checked on its product page in October 2026, and the comparison units use each maker’s published specifications. Runtimes and recharge times are arithmetic from published capacities and input limits, not measurements, and we have not tested any of these power stations. Our editorial standards describe how specification data is gathered and checked.