These are some interesting experiments to show how long food should stay frozen inside a freezer when the power is off. Of course individual mileage will vary (for example my upright freezer has door flaps on each drawer, and if your freezer is only set at -10 degrees you have less gap to play with).
The golden rule is if you expect an outage to be an extended time, try and open the door as little as possible.
Watch at How long does a freezer stay frozen with no power: experiments
Using a temperature sensor and Raspberry pi computer to work out how long it will take for food in a freezer to melt when the power goes out, also how much t…