Usually, the best mini-fridge can be left on for as long as you need it. You can use different settings to regulate the temperature, so you don't have to worry about it overworking itself. However, if you're going to be away for an extended period of time, it's probably best to turn it off.nnThis way, you won't have to worry about it using up too much energy or breaking down while you're gone. Of course, if you're leaving it on for just a few days, there's no need to worry. A mini fridge is a handy appliance, and as long as you use it responsibly, it should serve you well for many years.n