Battery vs. Gas Mowers for Northern Lawns

Up north, both kinds of mower work fine. The real difference is what happens from November to April. A gas mower can sit in a freezing garage all winter if you deal with the fuel first. A battery mower's deck can stay out there too, but the battery has to come inside. Lithium-ion packs lose capacity in the cold, most brands won't charge them near freezing, and Consumer Reports says to store them between 40°F and 80°F. If you can live with carrying a battery into the house each fall, battery mowers suit a short northern season well.

Here's how each one holds up across the season up north, plus how to put each away.

The northern season is short, and that favors battery

In snow country you mow from roughly April or May until growth stops in late fall. University of Minnesota Extension says to keep mowing until the grass stops growing, which there is generally around the end of October. Iowa State puts the end in late October or early November, once daytime highs stay below 50°F.

That means your mower sits more months than it runs. A gas engine that sits is how you get gummed carburetors, stale fuel and a spring that starts with a pull cord and a lot of swearing. A battery mower has no fuel to go bad and no carburetor to varnish. For a lawn under about half an acre, that alone makes battery the easier machine to own up north.

What cold does to a battery

Lithium-ion cells slow down as they get cold. The electrolyte inside thickens and the battery gives you less runtime. On a 45°F October morning you may get noticeably fewer passes out of a pack than you did in July. That runtime comes back when the pack warms up.

Charging is the part that can do real damage. Charging a lithium-ion cell below freezing can plate metallic lithium onto the anode, and that capacity is gone for good. Battery makers build chargers to refuse a cold pack. On an EGO, a pack brought in from a cold garage will usually flash red on the charger until it warms up.

What that means for you:

• Don't charge a pack in an unheated garage or shed once nights drop toward freezing.
• If the charger flashes and won't start, bring the pack inside for an hour or two. Nothing is wrong with it.
• Run your fall mows in the afternoon, when the pack and the grass are warmer and drier.

What cold does to a gas mower

A gas engine doesn't mind a cool fall day. It starts harder when it's cold, so you'll use the choke more, but it has full power at 40°F.

Gas earns its keep on fall leaves. Mulching a thick layer of wet maple leaves takes a lot of power, and a battery mower will drain fast or slow down in heavy, wet material. If you've got big trees and you mulch the leaves into the lawn instead of raking, a gas mower handles that job with fewer stops. With a battery mower, mulch more often while the layer is still thin, and raise the deck a notch on the leaf passes.

The weak spot on a gas mower is fuel. Ethanol-blend gas goes stale while the mower sits, and a short northern season means a long sit. Our post on small-engine fuel and ethanol covers why the carburetor gums up.

The last mow: same height for either machine

The type of mower makes no difference to how you finish the season. Go by the grass:

• Keep mowing as long as it grows. Both Minnesota and Iowa State say to keep going until growth stops. Long grass going into winter mats under snow and invites snow mold. Minnesota Extension also notes it gives voles cover.
• Lower it gradually. Iowa State says to drop from 3 to 3.5 inches down to 2.5 to 3 inches in mid- to late September. Minnesota recommends 3 inches or higher for a typical Midwest lawn during the season.
• Never take more than a third of the blade at once. That rule doesn't change in fall.

We go into more detail in when to stop mowing for the season and how short is short enough going into winter.

One tip for battery owners: plan the last mow for a mild afternoon. You get full runtime, the grass is dry, and you aren't trying to finish the lawn on a pack that's down a chunk of its capacity from the cold.

Winter storage: battery mower

The mower body is just steel or plastic, a motor and a blade. It can sit in an unheated garage. The battery can't.

1. Bring the battery inside. Consumer Reports says most batteries store best between 40°F and 80°F and recommends bringing them indoors even if the tool stays in the garage or shed. A basement or closet works. Keep it away from the furnace and off a cold concrete floor.
2. Store it at about 40% charge. For anything stored 30 days or longer, Consumer Reports recommends charging or running the battery to about 40% of capacity. Don't store it at full charge and don't store it dead.
3. Follow your brand's midwinter rule. They differ. According to Consumer Reports, EGO doesn't call for a charge during storage, and Greenworks says to fully charge the pack every two months while it's stored, then run it back down to 40%. Check your manual.
4. Clean the deck and check the blade. Scrape out the clippings, wipe the deck, and sharpen or swap the blade now so it's ready in spring. See sharpening mower blades like a golf course shop.
5. Take the safety key out and store it with the battery so you can find both in April.

Winter storage: gas mower

The gas mower can stay in the cold garage. You just have to take care of the fuel and the engine.

1. Pick one fuel method and follow the manual. One option is fresh gas with stabilizer in a full tank, then run the engine 5 to 10 minutes so treated fuel reaches the carburetor. The other is running the tank dry. Manufacturers disagree, so do what your engine maker says. Stabilizer won't rescue gas that's already stale.
2. Never store a fueled mower indoors in the basement or living space. Fuel in the house is a fire hazard.
3. Change the oil while it's warm, so the engine doesn't sit all winter in dirty oil.
4. Clean the deck and sharpen the blade. Pull the spark plug wire before you tip it or put a hand near the blade. Tip it with the air filter and carburetor side up so oil doesn't run where it shouldn't.
5. If it has a starter battery (riding mowers, some electric-start push mowers), pull it and keep it on a maintainer somewhere it won't freeze.

The full list is in mower winter storage: fuel, blades, battery. If you also run a snowblower, the same fuel rules apply. See the snowblower ready check.

What a battery mower costs

If you're shopping now, fall is a reasonable time to buy. Here's roughly what you'll pay for a good self-propelled battery mower. As of October 2026, Consumer Reports' top-rated self-propelled battery models listed from about $449 (Green Machine GMSM6200) to $900 (Greenworks LMB455, Makita XML08PT). The EGO LM2123SP-2 was listed at $769. Those prices include a battery and charger. Extra packs cost real money, so count how many you'll need before you buy.

Which one fits your lawn

Go with battery if:

• Your lawn is under about half an acre, or you have a second pack.
• You hate fuel, pull cords and spring carburetor trouble.
• You have a spot inside the house for a battery or two over winter.

Go with gas if:

• You've got a big lot or several big trees and mulch a lot of wet leaves in October and November.
• You mow in cold, wet conditions and don't want to manage battery temperature.
• You'll stick to a fuel routine every fall.

This week's checklist

• Battery owners: stop charging in the garage once nights near freezing. Charge inside.
• Gas owners: buy fresh fuel and stabilizer now, before the last mow, so the tank goes into winter treated.
• Both: keep mowing until the grass stops growing. Lower the height a notch at a time and never cut off more than a third.
• After the last mow, store the battery inside at about 40% charge, or treat the fuel (or run it dry, if your manual says to) on the gas mower.

Related: Store the Spreader So It Works in March

Sources (6)

• Consumer Reports: Your electric mower needs attention in winter
• University of Minnesota Extension: Mowing practices for healthy lawns
• Iowa State University Extension: Late summer and fall lawn care
• Renogy: Lithium batteries in cold weather
• Quartz: Top battery lawn mowers of 2026, ranked by Consumer Reports
• Bob Vila: How to winterize your lawn mower