Anker SOLIX C300: Runtime & Specs

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

The Anker SOLIX C300 is a 288 Wh LiFePO4 power station with 300 W of continuous AC output and a 600 W surge rating.

Capacity288 WhLiFePO4

Output300 W600 W surge

Solar input100 W11–28 V

Weight9.1 lbnot expandable

Check price on Amazon View at Anker SOLIX Calculate runtime for your devices

We may earn a commission if you buy through these links. It never changes our numbers, and every model in our database is included whether or not it pays us. Learn more.

Our notes

The C300 is a 288 Wh station that weighs 9.1 lb, and it leans hard on USB-C: three ports, with up to 140 W from one of them, more than most laptops ask for. A USB-C port also works as a 140 W input, so a good USB-C charger can top it up.

Its best trick at this size is the 10 ms UPS switchover. Plugged in between the wall and a router or a desktop, it takes over when the power cuts, and the router and modem then run for about 16 hours.

The 300 W inverter sets the ceiling. A CPAP without humidifier is fine for a night (about 8 hours), and so is a mini fridge, but a full-size fridge won't start on a 600 W surge. Solar input is 100 W through an XT60 port at 11 to 28 V, so one portable panel is the match. Anker's site showed it sold out in September 2026.

Simulated runtimes (not measured)

Nobody tested this unit for this page. These figures come from a computer simulation of the C300, 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 C300
Device	Spec-sheet math	Simulated, typical	Likely range	Simulated at 0 °C
Wi-Fi router + modem	16 hours	10 hours	9.2 hours to 12 hours	8.7 hours
CPAP (no humidifier)	8.2 hours	6.5 hours	6 hours to 7.1 hours	5.5 hours
Starlink Standard	2.7 hours	2.6 hours	2.5 hours to 2.7 hours	2.2 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 10 W for this model, varied from 6 to 15 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 C300. How we calculate · How we use AI

How long will the C300 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 C300
Device	Avg draw	Runtime
LED light bulb	9 W	27 hours
Phone charging	10 W	26 hours
Wi-Fi router + modem	15 W	16 hours
Laptop	50 W	4.9 hours
CPAP (no humidifier)	30 W	8.2 hours
CPAP with heated humidifier	60 W	4.1 hours
Starlink Standard	90 W	2.7 hours
TV	100 W	2.4 hours
Mini fridge	29 W	8.4 hours
Refrigerator	58 W	Can’t start it
Chest freezer	29 W	Can’t start it
Sump pump (1/3 HP)	160 W	Not enough output
Sump pump (1/2 HP)	210 W	Not enough output
Window AC	225 W	Not enough output
Drip coffee maker	1,000 W	Not enough output
Microwave	1,500 W	Not enough output
Space heater	750 W	Not enough output
Well pump	33 W	Needs 240 V

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 C300 can't power

Refrigerator (full-size, ENERGY STAR): needs about 1,200 W to start
Refrigerator (older full-size, 1990s–early 2000s): needs about 1,600 W to start
Chest freezer (7–15 cu ft): needs about 800 W to start
Upright freezer (frost-free, 13–20 cu ft): needs about 1,000 W to start
Microwave (1,000 W cooking power): needs 1,500 W running
Drip coffee maker (10–12 cup): needs 1,000 W running
Electric kettle (1.7 L): needs 1,500 W running
Toaster (2–4 slice): needs 1,000 W running
Induction burner (single, portable): needs 1,500 W running
Electric pressure cooker (6 qt, Instant Pot type): needs 1,000 W running
Blender (countertop): needs 400 W running
Rice cooker (5.5–6 cup): needs 600 W running
Window AC (5,000 BTU): needs 450 W running
Window AC (8,000 BTU): needs 700 W running
Space heater (portable, 1,500 W): needs 1,500 W running
Dehumidifier (50-pint): needs 490 W running
Gas furnace blower fan: needs 600 W running
Oxygen concentrator (home, 5 L/min): needs 310 W running
Sump pump (1/3 HP): needs 800 W running
Sump pump (1/2 HP): needs 1,050 W running
Well pump (1/2 HP submersible): needs 240 V
Washing machine: needs 500 W running
Garage door opener: needs 720 W running
Circular saw (7-1/4 in.): needs 1,400 W running
EV Level 1 charging (120 V, 12 A): needs 1,440 W running

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	3.8 hours

Check panel voltage and wiring with the solar charging calculator.

Full specifications

Battery capacity	288 Wh
Amp-hours at 12 V (converted) How we convert	24 Ah (22.5 Ah at 12.8 V)
Battery chemistry LFP vs NMC	LiFePO4 (LFP)
Continuous AC output	300 W
Surge (peak) output	600 W
SurgePad (heating devices)	600 W
AC voltage	120V
AC outlets	3
USB-C ports	3 (up to 140 W)
USB-A ports	1
12 V car outlet	Yes
Max solar input	100 W
Solar voltage range	11–28 V
Solar max current	8.2 A
Max AC charging power	330 W
AC charging time (maker claim)	0–80% in 50 min (wall outlet)
Expandable	No
UPS / EPS switchover What this means	10 ms
Cycle life What this means	3,000 cycles (to 80%)
Weight	9.1 lb
Warranty	5 years

Notes: AC model A1722 (C300 DC is a separate DC-only unit). XT60 solar only; USB-C2 also takes 140W input. Cycle-life % not stated. Shown sold out on ankersolix.com (Sep 2026).

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 C300 run a refrigerator?

It may not: a typical fridge compressor needs about 1,200 W for a moment to start, above this model's 600 W surge rating. Newer, smaller fridges may start fine.

Can the Anker SOLIX C300 run a microwave?

Not a full-size one. A typical 1,000 W microwave pulls about 1,500 W from the outlet, more than its 300 W continuous output. Its SurgePad mode is meant for simple heating devices, and microwaves may not work properly with it.

How many amp-hours is the Anker SOLIX C300?

The Anker SOLIX C300 works out to about 24 Ah at 12 V, or 22.5 Ah at 12.8 V, the nominal voltage of a 12 V LiFePO4 battery. Both are our conversion of Anker SOLIX's 288 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 23% as much as one. How we convert amp-hours.

How long does the Anker SOLIX C300 take to charge?

Anker SOLIX's published charging claim: “0–80% in 50 min (wall outlet)”. Max AC charging power is 330 W. With solar, it accepts up to 100 W. With 100 W of panels that's roughly 3.8 hours of good sun from empty.

Is the Anker SOLIX C300 expandable?

No. Its capacity is fixed at 288 Wh.

Does the Anker SOLIX C300 work as a UPS?

Anker SOLIX lists a 10 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.