Anker SOLIX F1200 (757): Runtime & Specs

By Hicham M. · Specs from Anker SOLIX's published documents, as of September 2026 · How we calculate

The Anker SOLIX F1200 (757) is a 1,229 Wh LiFePO4 power station with 1,800 W of continuous AC output. It runs a typical full-size fridge for about 18 hours. It has been replaced or discontinued, but many are still in use.

Capacity1,229 WhLiFePO4

Output1,800 Wsurge not published

Solar input600 W11–60 V

Weight42.1 lbnot expandable

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Our notes

The F1200, sold as the PowerHouse 757, comes in two versions, and a used one could be either. Early 2022 units had a 1,500 W inverter, solar input limited to 11 to 30 V and a weight of 43.9 lb. Anker's updated manual lists 1,800 W, 11 to 60 V and 42.1 lb. Anker's product page still shows 30 V for the solar port, so read the label on the unit before wiring panels in series.

With 1,229 Wh it runs a full-size fridge for about 18 hours and a CPAP for about 35. It has six AC outlets and a 20 ms UPS switchover. It's heavy for its size, about 29 Wh per pound, it can't be expanded, and there's no published surge rating.

Compared with Anker's current C1000 Gen 2 (1,024 Wh, 2,000 W, 24.9 lb), the F1200 has a bit more battery but weighs 17 lb more. It mostly makes sense at a good used price.

Simulated runtimes (not measured)

Nobody tested this unit for this page. These figures come from a computer simulation of the F1200 (757), and they are estimates. The plain runtime table below divides energy by average draw at 85% efficiency. The simulation also charges the battery for the power the inverter burns just by being switched on, which is why small loads come out shorter. Where we have measured a unit, the measurement is shown separately and labeled as measured.

Simulated runtimes for the Anker SOLIX F1200 (757)
Device	Spec-sheet math	Simulated, typical	Likely range	Simulated at 0 °C
Wi-Fi router + modem	2.9 days	33 hours	27 hours to 40 hours	27 hours
CPAP (no humidifier)	35 hours	23 hours	20 hours to 26 hours	19 hours
Starlink Standard	12 hours	10 hours	9.5 hours to 11 hours	8.7 hours
Refrigerator (full-size, ENERGY STAR)	18 hours	14 hours	13 hours to 16 hours	12 hours

Nonstop runtime from full to battery cutoff. Likely range = middle 80% of 200 simulated runs with the uncertain inputs varied. The inverter idle draw is assumed, not published: we assumed about 19 W for this model, varied from 11 to 28 W. If the real figure is lower, real runtimes land closer to the spec-sheet column.

How this was simulated

The battery is stepped down every 2 minutes until it reaches cutoff, for 200 runs per device. Results are seeded, so the page shows the same numbers on every build.
Battery draw = load + inverter idle draw + 4–8% of the load + a loss that rises with load squared (4% at full output).
Usable capacity = 92–98% of rated Wh, for protection cutoff and aging.
At 0 °C, 80–90% of that capacity is assumed available.
Fridges cycle on and off every 30–50 minutes at the share of the time set by their average draw. The inverter idle draw continues while the compressor is off.
Devices that exceed this model's output or surge rating are left out. Loads are US 120 V devices.

These ranges are assumptions about a typical unit. They are not manufacturer figures for the Anker SOLIX F1200 (757). How we calculate · How we use AI

How long will the F1200 (757) run your appliances?

Nonstop runtime for one device at a time, using typical US wattages and 85% inverter efficiency. Devices marked ✕ can't run on this model.

Estimated runtime by appliance for the Anker SOLIX F1200 (757)
Device	Avg draw	Runtime
LED light bulb	9 W	4.8 days
Phone charging	10 W	4.6 days
Wi-Fi router + modem	15 W	2.9 days
Laptop	50 W	21 hours
CPAP (no humidifier)	30 W	35 hours
CPAP with heated humidifier	60 W	17 hours
Starlink Standard	90 W	12 hours
TV	100 W	10 hours
Mini fridge	29 W	36 hours
Refrigerator	58 W	18 hours
Chest freezer	29 W	36 hours
Sump pump (1/3 HP)	160 W	6.5 hours
Sump pump (1/2 HP)	210 W	5 hours Surge?
Window AC	225 W	4.6 hours
Drip coffee maker	1,000 W	1 hours
Microwave	1,500 W	42 min
Space heater	750 W	1.4 hours
Well pump	33 W	Needs 240 V

Surge? = this model has no published surge rating, so starting motors and compressors may or may not work. Fridges, freezers, pumps and AC units cycle on and off, so we use their average draw. Want a mix of devices on a schedule? Use the runtime calculator.

What the F1200 (757) can't power

Well pump (1/2 HP submersible): needs 240 V

Solar charging time

Hours of good sun to charge from empty, assuming panels deliver 75% of their rating.

Panels	Power in	Hours of sun
100 W of panels	75 W	16 hours
200 W of panels	150 W	8.2 hours
400 W of panels	300 W	4.1 hours
600 W of panels	450 W	2.7 hours

Check panel voltage and wiring with the solar charging calculator.

Full specifications

Battery capacity	1,229 Wh
Amp-hours at 12 V (converted) How we convert	102 Ah (96 Ah at 12.8 V)
Battery chemistry LFP vs NMC	LiFePO4 (LFP)
Continuous AC output	1,800 W
Surge (peak) output	Not published
Boost mode	None listed
AC voltage	120V
AC outlets	6
USB-C ports	2 (up to 100 W)
USB-A ports	4
12 V car outlet	Yes
Max solar input	600 W
Solar voltage range	11–60 V
Solar max current	12.5 A
Max AC charging power	1,000 W
AC charging time (maker claim)	0–80% in 1 hr (HyperFlash)
Expandable	No
UPS / EPS switchover What this means	20 ms
Cycle life What this means	3,000 cycles (to 80%)
Weight	42.1 lb
Warranty	5 years

Notes: PowerHouse 757 (A1770). Uses current Anker page/updated manual; original 2022 units: 1,500W AC, 11–30V solar, 43.9 lb. Anker page still lists XT60 as 11–30V⎓10A (conflict).

Specs from Anker SOLIX's published documents, as of September 2026. Found an error? Tell us.

Sources

Similar power stations

Questions

How long will the Anker SOLIX F1200 (757) run a refrigerator?

About 18 hours for a typical ENERGY STAR full-size fridge averaging 58 W, assuming 85% inverter efficiency. Older or larger fridges use more. Try your own numbers.

Can the Anker SOLIX F1200 (757) run a microwave?

Yes. A typical 1,000 W microwave pulls about 1,500 W from the outlet, within its 1,800 W continuous output. A full battery gives about 42 min of cooking.

How many amp-hours is the Anker SOLIX F1200 (757)?

The Anker SOLIX F1200 (757) works out to about 102 Ah at 12 V, or 96 Ah at 12.8 V, the nominal voltage of a 12 V LiFePO4 battery. Both are our conversion of Anker SOLIX's 1,229 Wh rating: amp-hours = watt-hours ÷ volts. The battery inside may run at a different voltage, so an amp-hour figure in a manual or on a product listing can look very different for the same energy. For scale, a 12 V 100 Ah LiFePO4 battery holds 1,280 Wh, so this model holds about as much as one. How we convert amp-hours.

How long does the Anker SOLIX F1200 (757) take to charge?

Anker SOLIX's published charging claim: “0–80% in 1 hr (HyperFlash)”. Max AC charging power is 1,000 W. With solar, it accepts up to 600 W. With 600 W of panels that's roughly 2.7 hours of good sun from empty.

Is the Anker SOLIX F1200 (757) expandable?

No. Its capacity is fixed at 1,229 Wh.

Does the Anker SOLIX F1200 (757) work as a UPS?

Anker SOLIX lists a 20 ms switchover time, so it can keep devices like routers and computers running when the power drops. Check that your specific device tolerates the switch before relying on it for anything critical.