How long will an Anker SOLIX C1000 run a refrigerator?

The short answer

One owner ran a Panasonic 138-liter refrigerator for 15 hours 49 minutes in a 28–30°C room, with the refrigerator roughly 80% full and opened about ten times. A second publisher reported 13 hours 12 minutes on a basic top-freezer refrigerator. These were different appliances, conditions, and measurement records.

The defensible conclusion is not “a C1000 lasts 13–16 hours.” It is that these two specific refrigerators produced those two results. Your compressor duty cycle, room temperature, door openings, defrost behavior, food load, station settings, and battery condition can move the answer.

Controlled energy establishes a better baseline

OutdoorGearLab measured 897Wh delivered through AC from the original 1,056Wh C1000. ComputerBase measured 993Wh at a 500W constant load and 954Wh at 2,000W. The test methods and loads differed, so the results should not be averaged.

Controlled energy does not tell you how often a refrigerator compressor will cycle. It does give you a grounded watt-hour budget to combine with measured appliance consumption.

What the two refrigerator trials actually show

Neither trial establishes a minimum, maximum, warranty, or safe medication-storage interval. Refrigerator temperatures—not merely whether the compressor still receives power—determine food and medication safety.

A transparent refrigerator + Wi-Fi planning example

Suppose the refrigerator budget is 960Wh per day and modem plus Wi-Fi is 480Wh per day, for 1,440Wh daily. For an unmeasured planning comparison, hold back 10% and use 85% of official rated capacity before that reserve:

These are calculator outputs, not observed Backup Power Finder results. The BP1000 doubles rated storage but is not compatible with the C1000 Gen 2, and twice the rated storage does not guarantee exactly twice the refrigerator runtime.

Solar can extend the plan, but not on command

The original C1000 is officially rated for up to 600W solar input. The F2600 is rated for up to 1,000W. A PS400 panel has a 400W nameplate, but nameplate power is not the wattage a station will receive throughout a day.

Clouds, shade, panel angle, cell temperature, wiring, connector losses, the station's state of charge, and its input limits all affect accepted power. Keep battery-only runtime and solar contribution separate, then add solar only from a documented daily-energy assumption or an observed result.

How to turn the estimate into your outage plan

1. 1
   Measure the refrigerator.

   Use a suitable plug-in energy meter over at least a normal day and capture warm-weather behavior if summer outages matter.

2. 2
   Enter the real schedule.

   Include Wi-Fi, lights, charging, and any other simultaneous loads rather than assigning the full battery to one appliance.

3. 3
   Preserve a reserve.

   Do not plan to hit shutdown exactly when the outage target ends.

4. 4
   Rehearse the setup.

   Run the actual appliance combination, record starting and ending charge, elapsed time, room temperature, and any station warning.