Robomow Winterizing Guide: Storage Prep Before Winter

Skip This and You'll Meet It Again in Spring

Robomow's most common spring service calls — a "Perimeter Wire Problem" message that clears itself once the wire's checked, or a battery that won't take a charge — almost always trace back to storage prep that got skipped the previous fall. None of it takes long, and it's a lot cheaper than a spring diagnostic visit.

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Do This Before First Frost (5 Minutes)

• Let the mower finish its last scheduled cycle and return to the base station on its own
• Check the perimeter wire indicator light on the base station is solid
• Note the current battery charge level in the app
• Walk the visible wire path once while the ground is still workable

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Step 1: Charge the Battery to the Right Level for Storage

A battery stored fully drained is the single biggest cause of "won't charge" complaints every spring.

How to Do It:

1. Run the mower until it docks and reaches a full charge
2. Disconnect it from the charger rather than leaving it trickle-charging in the base for months
3. If your model allows battery removal, bring it indoors and store it at room temperature instead of an unheated shed
4. Check the charge level again roughly once a month during long-term storage — batteries self-discharge slowly even sitting idle

Time: 10 minutes, plus a full charge cycle | Cost: Free | Difficulty: Easy

Model notes: RS and RX series batteries are generally accessible for removal. Older RC series models are similar — check your specific manual for the exact release mechanism.

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Step 2: Protect the Base Station and Perimeter Wire

This is the step most owners skip, and it's the one behind the "Perimeter Wire Problem" alerts we cover in our Robomow boundary wire fault guide every spring.

How to Do It:

1. Unplug the base station's power supply from the wall outlet for the season
2. Wipe down the charging contact plates on both the mower and the base before storing either
3. Walk the visible wire path and note any spots where frost heave has pushed a shallow section closer to the surface — flag them for a spring check rather than digging now
4. Check the wire terminals at the base station for corrosion and clean if needed
5. If the base sits somewhere that collects standing water or heavy snow, consider covering it or moving it to drier ground

Time: 15-20 minutes | Cost: Free | Difficulty: Easy

Pro tip: Shallow-buried wire near the base station is the most common frost-heave casualty, since that section is usually the newest and least-settled from installation.

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Step 3: Clean and Inspect the Cutting Deck and Blades

Safety note: Power off the mower and disconnect the battery before touching, cleaning, or inspecting anything near the blades. Wear cut-resistant gloves.

How to Do It:

1. Power off and disconnect the battery
2. Clear grass buildup from underneath the deck and around the blade disc
3. Inspect each blade for dullness, chips, or bent edges
4. Replace worn blades now rather than starting next season with a dull cut — see our Robomow blade not spinning guide if a blade won't engage at all
5. Wipe down the exterior housing and let it dry fully before storage

Time: 15-20 minutes | Cost: Free, or $15-30 for replacement blades | Difficulty: Easy

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Step 4: Choose the Right Indoor Storage Spot

How to Do It:

1. Store the mower indoors in a dry, frost-free space rather than a shed that swings to outdoor temperatures
2. Keep it off bare concrete or damp ground where moisture can wick into the housing over months
3. Cover it loosely with a breathable cloth rather than sealed plastic, which traps condensation

Time: 5 minutes | Cost: Free | Difficulty: Easy

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Step 5: Set Up for an Easy Spring Startup

How to Do It:

1. Plan to walk the full perimeter wire loop before the first mow, checking the frost-heave spots flagged in Step 2
2. Bring the battery back up to a full charge before reinstalling it — a winter-stored charge often isn't quite as full as it reads
3. Reconfirm your mowing schedule in the app, especially if you shortened it for a fall wind-down
4. Run a short manual test cycle before trusting the mower to a full automatic schedule again

Time: 10-15 minutes | Cost: Free | Difficulty: Easy

If the mower still won't start or hold a charge after all of this in spring, our universal winter-storage recovery guide and Robomow won't-charge guide cover those specific fixes — this article is about avoiding that call in the first place.

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When DIY Won't Work - Repair vs Replace

Signs it's time for professional service:

• The battery won't hold any charge at all even after a full winterizing routine and a fresh spring charge attempt
• The base station shows no power at all after being reconnected in spring, with a confirmed live outlet
• A wire section that was intact in fall shows a genuine break in spring, beyond a simple frost-heave reposition

Cost comparison: Winterizing itself costs nothing beyond the occasional set of replacement blades. A dealer diagnostic for a suspected battery or base station fault typically runs $50-100.

Warranty check: A battery or base station fault from a manufacturing defect may be covered if the mower is still within warranty — damage from being stored discharged or left exposed over winter typically isn't.

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Common Winterizing Mistakes to Avoid

• Leaving the battery fully drained instead of charged before storage
• Leaving the base station's power supply plugged in and exposed all winter
• Assuming a few inches of frost heave near the base "isn't worth checking" until it causes a fault
• Storing the mower in an unheated shed that swings well below freezing
• Skipping blade inspection because "they were fine in the fall"

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FAQ

How full should the battery be before winter storage?

Fully charged, then disconnected from the charger. A partially charged or drained battery sitting for months is the most common cause of spring charging failures.

Do I need to dig up the perimeter wire before winter?

No — just walk the visible path and note any shallow or exposed sections near the base station so you can check them first in spring, rather than assuming everything's fine.

Is it okay to leave the base station outside all winter?

Yes, but unplug its power supply from the wall outlet for the season and make sure it isn't sitting somewhere that collects standing water.

Why does frost heave affect a buried perimeter wire?

Freeze-thaw cycles can gradually push shallow-buried sections of wire closer to the surface, especially near a base station where the wire is often newer and less settled than the rest of the loop.

How is this different from the universal winter-storage guide?

This one is proactive — steps to take before winter to prevent problems. The universal guide is for a mower that's already failed to start after storage and covers recovery steps across all brands.

Should I replace dull blades before storage or wait until spring?

Before storage is better — you're already inspecting the deck as part of winterizing, so replacing worn blades then saves a separate task once mowing season starts.