Is the longer the freezing time of ice storage agent, such as ice bag and ice box, the better?

For the users who don't often use or use the ice box for the first time, they often have some problems or questions about the use of ice box for cold charging. One of the most frequently asked questions is: is the longer the ice box is frozen, the better?

About the freezing time of the ice box in the refrigerator:

When we use the ice box, first place the ice box in the refrigerator or freezer for about 10-12 hours, and then take it out for use after the ice box is completely frozen into solid. Completely frozen to solid indicates that it has been fully charged. If we continue to put the frozen ice box into the refrigerator freezer for cold storage, it will not continue to absorb cold energy, because it is fully charged with cold and has sufficient cold capacity.