When properly maintained, two to four years on average. (Top)

Yes. Two full years from date of purchase. One year for battery. (Top)

Under normal circumstances, a unit exposed to rain will not be damaged. We would not advise putting the mower into operation during a severe storm, however should it begin raining while it is operating; there is no problem for the Robomow^®. Several Robomow^® models are equipped with a rain sensor and you may choose not to allow operation while it is raining. It is prohibited to wash Robomow^® with a water hose, particularly from the underside. (Top)

No, the charger is equipped with a float control, allowing the charger to remain connected at all times without risk of damage. In fact, this is the recommended procedure between uses and for winter storage. (Top)

This depends on the model you are using, size of yard and frequency of operation, but typical figures are very low, no more than $10 for an entire year of operation. (Top)

• Robomow® winter charging and storage instructions
• External Charger Instructions
• Tips for maintaining your lawn

• Finding a Break in the Wire
• RM Battery replacement