Our answer
On our planning profile the Anker SOLIX F3800 runs a household refrigerator for about 59 hours, or 47 hours if you keep a reserve back.
The checks behind this answer
Stored energy is the final check, not the first. Voltage, continuous output, and startup demand must clear before runtime means anything. Missing published evidence stays marked unverified instead of being treated as a pass.
| Check | Result | Why |
|---|---|---|
| Voltage | Clears | A household refrigerator runs on 120V and the Anker SOLIX F3800 supplies 120V AC. |
| Continuous output | Clears | A 150W running load sits inside the 6,000W continuous rating, leaving about 3900% headroom. |
| Startup demand | Clears | The 1,200W start is covered by continuous output alone, so no surge rating is needed. |
How the number is built
A battery holds back some of its rated capacity, and converting to household AC costs more on top. Of the 3,840Wh rated here, roughly 3,041Wh reaches the outlet under a conservative planning model.
That energy meets an average load of 51.5W, which applies a 33% duty cycle to a 150W running draw. Holding back a 20% reserve for battery age, cold, and a longer outage leaves 47 hours. These are calculations, not measurements from a test.
Before you rely on this
These limits decide whether this appliance belongs on a portable battery at all.
- A closed refrigerator keeps food safe for about four hours without power. Backup power can extend that, but the temperature still needs checking.
Replace our assumptions with your own
Room temperature, how often the door opens, how full the refrigerator is, the age of the door seals, and whether an automatic defrost cycle falls inside the outage all move the daily energy figure more than the model name does.
Read the nameplate or data label for voltage and rated amps or watts, then run the appliance through a normal cycle on a plug-in energy meter for 24 hours. Use the measured watt-hours in the calculator instead of the default on this page.
Continue through this cluster
Use the next page that answers your unresolved constraint
Evidence used on this page
Important fields are tied to a specific source. Manufacturer claims, government guidance, calculations, and planning assumptions remain separate.
- Anker SOLIX F3800 specifications
Anker SOLIX US
Published specification table plus the comparison chart and FAQ for the banded solar input current.
official product page
- Certified residential refrigerators
ENERGY STAR
Model-level annual energy use and product attributes. It supports the energy figures used here. It does not validate any startup or surge preset.
government data
- Food safety during a power outage
FoodSafety.gov
Supports the four-hour closed-refrigerator and 48-hour full-freezer guidance.
government guidance
- Calculation and compatibility methodology
Power Station Station
Defines the capacity, efficiency, reserve, duty-cycle, voltage, continuous-output, and startup checks applied across the site. Planning defaults are visible on every page that uses them.
planning assumption
- Anker SOLIX F3800 tech specs and comparison table
Anker SOLIX US
Tech specs table for outlets, USB, solar and AC input; the F3800 Plus comparison table for the XT-60 solar connector, the two DC input ports and the firmware-dependent solar current bands; FAQ Q1 for the same bands stated in prose.
official product page
- Anker SOLIX "Compare Products" tool, F3800 column
Anker SOLIX US
Anker's own comparison tool. Source for AC outlet counts, per-port USB wattage, car auxiliary rating, AC input and the MPPT current limit. Its receptacle type labels are not used: it prints "NEMA 6-20" for outlets it annotates as 120V.
official product page