Magnet magnetism may be lost due to temperature. When the usage temperature is higher than room temperature, the magnetism will weaken. On the other side, when the temperature decreases, the magnetism will return to its original state. However, it should be noted that when heated to the "Curie temperature", the magnet will completely lose its magnetism. In addition, neodymium magnets undergo surface treatment. And their surface treatment may peel off due to adsorption impact or aging, leading to rusting. Therefore, in order to avoid damage to the surface treatment, it is necessary to use it carefully and avoid using it in humid environments as much as possible.
Correct storage method: The surface of the magnet continuously generates magnetic force. As long as it is used without pressure, it can be used for a long time like a permanent magnet. The most suitable method for storing magnets is to attach them to magnetic materials such as iron.