Robot Mower Maintenance & Winter Storage: The 30-Minute Annual Routine

In-season: blades and brushing

Most robot mowers use small pivoting razor blades on a spinning disc, and they're consumables. Plan on swapping them every 4 to 8 weeks in the growing season. It's a 5-minute job with the screwdriver in the box, and a set runs $15 to $25. Dull blades tear rather than slice grass, which browns the tips of your lawn. It's the most common cause of the complaint that a robot cuts badly, and the cheapest fix.

Beyond blades, flip the mower monthly (power off first, always) and brush out compacted clippings from the deck and wheels. Machines rated IPX5 or IPX6, which includes most of this site's picks, can be rinsed with a hose. Never use a pressure washer, which defeats the seals.

Battery care is mostly automatic

Lithium packs in current mowers are managed well by their own firmware. The machine handles charge cycling, and features like Mammotion's EcoSleep cut standby drain. Your only jobs: keep the charging contacts clean (a pencil eraser works), and never store the mower fully discharged. A pack left at 0% through winter can drop below its recoverable voltage.

Winterizing in four steps

One: give the mower a full clean and a fresh blade set so it wakes up ready in spring. Two: charge to roughly 50 to 70%, the healthiest storage state for lithium, then power the unit fully off. Three: store the mower indoors somewhere frost-free. Garages are fine, and the original box is ideal. Four: bring the dock and any RTK antenna inside too if your winters are harsh, or at minimum disconnect dock power.

In spring, reverse it. Firmware update first, then a boundary check (frost heave moves ground and occasionally maps), then resume the schedule. Total annual maintenance realistically lands around thirty minutes plus blade swaps, a fraction of a single Saturday mow.