A mid-size power station can keep a typical refrigerator cold through most outages — but the honest answer depends on the fridge, not just the battery label.
What actually determines the runtime
Fridges cycle on and off, so they draw their rated wattage only part of the time. That duty cycle is why a naive “watts times hours” estimate overstates the real draw — and why our sizing math uses a realistic duty factor instead.
⚠️ If a device is life-sustaining, plan with your care team
This guide is for planning and isn’t medical advice. For CPAP, oxygen, ventilators, or any equipment you can’t safely go without, confirm backup requirements with your equipment supplier and physician, and register with your utility’s medical-priority program. For installation, transfer switches, or panel work, use a licensed electrician.