What an outage actually takes from you is the freezer, the router and, in some houses, the machine somebody sleeps attached to. These guides work out how much energy that needs, in watt-hours, before anything is recommended.
Capacity in watt-hours, less inverter losses, divided by the fridge's average draw. The sum, a calculator against real capacities, and the surge check.
Read the answerTwo numbers decide it: watts, which say what will start, and watt-hours, which say for how long. The method, a worked example and a calculator.
Read the answerOne runs indoors and runs out; the other runs as long as you feed it and cannot come inside. How outage length, where you live and what you run decide between them.
Compare themThe brand we are paid by in this category: BLUETTI. Everything on those pages is a product page; the guides above are not.