If you mean electricity: 3 days. Was having to buy bags of ice to keep my fridge cold because it was cheaper than having to replace all the food that would have spoiled if I hadn’t. At least it was in a time where smartphones existed and I can charge it from my car, otherwise I would have been bored as fuck.
You could always keep food preserved how ancient peoples did. For instance, Romans would build ditches and store their food in, and some people would keep it preserved by having smoke flow over it 24/7. The need for refrigeration is surprisingly modern even if only because the other methods can be a piece of work.
I’ve never had any real power.
If you mean electricity: 3 days. Was having to buy bags of ice to keep my fridge cold because it was cheaper than having to replace all the food that would have spoiled if I hadn’t. At least it was in a time where smartphones existed and I can charge it from my car, otherwise I would have been bored as fuck.
You could always keep food preserved how ancient peoples did. For instance, Romans would build ditches and store their food in, and some people would keep it preserved by having smoke flow over it 24/7. The need for refrigeration is surprisingly modern even if only because the other methods can be a piece of work.