How Long Will a 100Ah Battery Run a Fridge?

This guide provides useful information if you have ever wanted to know how long 100Ah batteries will last for a refrigerator. Generally, a refrigerator uses five amps, so a battery rated at 100Ah should last for about 133 hours or 5.5 days. Of course, these guidelines can be exceeded, or sometimes not met at all. A chest refrigerator in Thredbo might be able to last for 300 hours in winter, while one in Darwin might just last 72 hours in summer.