To safely store a robot lawn mower, it is important to first clean and thoroughly inspect the mower for any signs of damage or debris. In order to prevent corrosion, it is recommended to keep the mower in a dry and well-ventilated area. Additionally, it is a good idea to remove the battery and store it separately in a cool, dry place. If storing the mower for an extended period of time, it is best to disconnect the battery completely to prevent any potential damage.