A robot lawn mower needs regular maintenance to keep cutting well and last for years. Most of the work is simple. Clean the blades, check the sensors, and store the mower properly over winter. This guide gives a month-by-month schedule for UK gardens, so nothing gets missed across a full mowing season.
Spring: Getting Started for the Season
- Inspect the blades. Check for wear, rust, or damage after winter storage. Replace worn blades before the first cut of the season.
- Check the battery. Confirm it holds a full charge and runs the expected mowing time. A battery that drains fast may need replacing.
- Clean the charging contacts. Dirt and corrosion on the dock’s contacts are a common cause of charging failures.
- Test the boundary wire. For wired models, check for breaks or damage caused by winter frost or garden work.
- Update the firmware. Check the manufacturer’s app for any software updates released over winter.
Summer: Regular Upkeep
| Task | How Often |
|---|---|
| Clean the underside and wheels | Weekly, or after mowing wet or muddy grass |
| Check blade sharpness | Every two to three weeks during peak growing season |
| Clear grass clippings from sensors | Weekly |
| Check for obstacles in the mowing area | Before each mowing session, or set to automatic checks in the app |
Autumn: Preparing for Slower Growth
Grass growth slows as temperatures drop. Reduce the mowing schedule to match, rather than running the same summer settings. Fallen leaves become a bigger issue in autumn. Clear the lawn of leaves and debris before each mowing session, since large debris can block the blades or confuse sensors. This is also a good time to do a thorough clean of the mower before winter storage begins.
Winter: Storage and Protection
- Clean the mower fully before storing it, removing all grass, dirt, and debris from the underside and wheels.
- Charge the battery to around 50% before long-term storage, rather than full or empty, to protect battery health.
- Store the mower indoors in a dry, temperature-stable location, such as a garage or shed, not left outdoors.
- Check the manufacturer’s guidance on whether the battery should be removed and stored separately over winter.
- Inspect the charging dock and cable for damage before packing everything away together.
Warning Signs to Watch For
- Uneven cutting results. Usually points to dull or damaged blades needing replacement.
- Shorter run time than usual. Often indicates the battery is degrading and may need replacing soon.
- Mower stops docking correctly. Check the charging contacts for dirt or corrosion first, before assuming a bigger fault.
- Unusual noise during operation. Worth investigating immediately, since it can indicate a mechanical issue developing.
Expert Insight
Robot mower retailers who handle servicing consistently report that most call-outs trace back to two simple causes: dirty charging contacts and neglected blade maintenance. Both take only a few minutes to check regularly. Owners who build a five-minute weekly check into their routine avoid the vast majority of common faults that otherwise require a technician visit.
Frequently Asked Questions
How often should robot mower blades be replaced?
Most manufacturers recommend replacing blades every few months during regular use, though this varies based on lawn size and how often the mower runs.
Can a robot mower be left outside over winter?
This is not recommended. Cold, damp conditions can damage the battery and electronics. Store the mower indoors in a dry location instead.
What charge level is best for winter storage?
Around 50% is generally recommended, rather than a full or empty battery, since this reduces long term battery degradation during extended storage.
Final Thoughts
A simple, seasonal maintenance routine keeps a robot mower running reliably for years and avoids most common faults. For our full buying guide, see robot lawn mowers, and for battery care specifically, see our guide to robot mower battery safety.
