Running a refrigerator on battery backup takes a power station sized for both the fridge’s running watts and its compressor startup surge.
For the full breakdown, see our best Backup Battery for a Refrigerator guide.
Most refrigerator backup failures trace back to one skipped number. A fridge that idles at 120 watts can demand two or three times that for a heartbeat when the compressor starts, and a power station sized for the smaller figure will stall the compressor or trip its own inverter every few minutes until the food warms. Those two numbers are the first things to check when learning how to run a refrigerator on battery backup power.
Get them right and a mid-size power station carries a standard fridge through a long evening outage. Get them wrong and a capable-looking unit browns out on the first compressor cycle.
How Do You Size A Battery For A Refrigerator?
Sizing starts with the compressor’s startup surge
