Robot Mower Winter Storage: Step-by-Step Checklist

6 min read · Updated 2026-04-30

If you’ve spent any time with a robot mower, you know the biggest benefit is the "set it and forget it" lifestyle. But if you literally forget it once the first frost hits, you’re setting yourself up for an expensive repair bill in the spring. Lithium-ion batteries and sophisticated circuit boards are not fans of the North American winter, particularly in regions where sub-freezing temperatures are the norm.

The short answer for proper robot mower winter storage is simple: bring the mower inside, keep the battery partially charged, and decide whether your charging station stays out or comes in. If you follow this checklist in November, you won’t be troubleshooting "Battery Error" messages or seized motors come April.

The Battery Is the Priority

The most expensive component in your Husqvarna Automower or Segway Navimow is the battery. Lithium-ion batteries have a "Goldilocks" zone for storage. If you leave the battery at 0% in a freezing shed, it may discharge to a point of no return, effectively bricking the mower. If you store it at 100% in a hot basement, it degrades the cell chemistry over time.

Before you power the unit down for the season, charge it to roughly 70% to 80%. Once it hits that mark, turn off the main power switch. Most modern units, like the Mammotion LUBA or the Worx Landroid, have a physical toggle or a long-press shutdown sequence. Do not simply leave it on the dock with the power "on" all winter; some units have a small parasitic draw that will slowly drain the battery even if it's not mowing.

The Great Dock Debate: Leave it or Pull it?

One of the most frequent questions I get is whether the charging station needs to come inside. The answer depends on your brand and your tolerance for labor.

• Leave it out: Most manufacturers, including Husqvarna, say the dock can stay outside. If you leave it, keep it plugged into power. The small amount of electricity running through the board generates just enough warmth to prevent condensation and keep the electronics dry.
• Bring it in: If you own a mower with a sensitive camera or LiDAR tower, such as the Ecovacs Goat or the EcoFlow Blade, I’m a fan of bringing the dock—or at least the power brick—inside. This prevents "heave" from the freezing ground from tilting your dock out of alignment, which can cause docking issues in the spring.

Pro Tip: If you leave the dock outside, disconnect the perimeter wires (if your model uses them) and cover the ends of the wires with waterproof grease or a dedicated 3M connector to prevent corrosion.

Deep Cleaning (Do Not Power Wash)

This is where most owners mess up. You want the mower clean so dried grass doesn't trap moisture against the bearings, but you should never, ever hit a robot mower with a high-pressure hose. Even "waterproof" models like the Segway Navimow are only rated for low-pressure splashes.

Use a stiff plastic brush to scrape away the "grass concrete" from the undercarriage. For the body, a damp microfiber cloth is usually enough. Pay special attention to the charging contacts on both the mower and the dock. Use a bit of fine-grit sandpaper or a Scotch-Brite pad to buff away any oxidation. If those contacts aren't shiny, your mower will struggle to charge when it wakes up in five months.

Inspect and Swap the Blades

Winter is the best time to handle your annual maintenance because you aren't in a rush to get back on the grass. Flip the mower over and check the blades. On disc-style mowers like those from Eufy or Anthbot, these blades are basically heavy-duty razor blades.

If they are chipped or rounded off, toss them. I generally recommend starting every spring with a fresh set of blades anyway. While you’re down there, check the wheels for any play or wobbling. If a bearing feels "crunchy" when you spin the wheel by hand, that’s a job for a service dealer over the winter, rather than waiting for the May rush when lead times at repair shops can be weeks long.

Storage Conditions Matter

Where you put the mower is just as important as how you prepped it. Your robot mower winter storage spot should be:

1. Dry: High humidity can lead to internal condensation.
2. Above Freezing: A heated garage is luxury, but even an unheated basement is better than a shed.
3. Pest-Free: Field mice love the interior of a robot mower. It's warm, enclosed, and the wiring insulation is often made with soy-based plastics that taste like a snack. If you store your mower in a shed, consider a perimeter of peppermint oil or traps to keep the rodents from turning your the upper-mid range mower into a winter nest.

The Spring Checklist: A Quick Preview

When the ground thaws and the grass starts to wake up, don't just toss the mower on the lawn. Give it a "wake-up" charge inside for an hour first. Check your firmware via the app; winter is often when manufacturers push out the biggest Navimaker or Landroid updates. Finally, walk your perimeter or check your RTK antenna. Winter storms can shift antennas or snap perimeter wires, and it’s easier to find those issues before the grass gets six inches tall.

Bottom Line

Taking 20 minutes for proper robot mower winter storage is essentially an insurance policy for your battery. Clean it, charge it to 80%, turn it off, and keep it somewhere dry—do those four things, and your "robot summer" will start without a hitch.---Ready to learn more? Check out our Best Robot Lawn Mowers of 2024 or read our guide on Maintaining Your Robot Mower.