Start with energy use
Our 33% assumption means the compressor is modeled as running for about one-third of the backup window. It is an example, not a promise about your fridge. Temperature, settings, door opening and defrost cycles change consumption. If you have measured daily energy in Wh, divide by 24 to estimate average watts.
Check the compressor start
Capacity in Wh does not tell you whether the inverter can start a motor. Confirm your fridge’s running and starting requirements, the power station’s continuous and surge limits, and how long its surge rating lasts. “Boost” modes are not a substitute for verified compatibility.
Make the example your own
Open this plan, enter your measured running watts and usage, and set the desired duration. Add other essentials before comparing models. Keep On assumes one motor starts at a time; simultaneous motor starts may need more output.
Example prepared October 11, 2026. No hands-on product tests are claimed.