Best 40V Cordless Lawn Mowers: Brushless, Self-Propelled and Compact

The best 40V cordless lawn mowers for most homeowners are 16 to 17 inch brushless push models such as the Worx WG745 and the Greenworks 40V 16in, while bigger lawns and hills call for a self-propelled 20 to 21 inch model such as the Greenworks 40V 21″ or the SKIL PWR CORE 40 20-Inch. The “40V” label tells you which battery platform you are buying into, so the right pick depends as much on the tools you may add later as on the mower itself. This guide compares seven 40V mowers and four alternatives, and explains how to read the numbers on the box.

Our top picks

Top pickGreenworks 40V 16in Push Lawn Mower

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Also greatGreenworks 40V 16in Push Lawn Mower

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Also greatGreenworks 40V 17in Push Lawn Mower

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Also greatGreenworks 40V 16"

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Key takeaways

• 40V is a battery platform, not a power rating. Check the amp-hours (Ah) of the included battery or batteries, because Ah drives how long you can mow per charge.
• Push mowers with 14 to 17 inch decks suit small and medium lawns; self-propelled 20 to 21 inch decks suit longer lawns, slopes and thick grass.
• A kit with two batteries lets you swap and keep mowing. A single-battery kit may need a charging break.
• Pick a brand whose other 40V tools you might want, since batteries are usually shared within a brand family.

Best 40V cordless lawn mowers at a glance

We did not personally use these mowers. The comparison comes from product listings, maker descriptions and general lawn-care guidance. Run time, cut area per charge and exact weights are not quoted unless the listing states them, so check the maker page for those numbers.

What “40V” actually means

A cordless mower’s voltage describes the battery platform. Brands that sell 40V tools generally let you swap the same battery between a mower, a string trimmer, a leaf blower and more. That makes the platform your real purchase. Two numbers decide how the mower behaves:

• Voltage (V) sets the power class of the platform. Most 40V mowers use the same voltage, so it does not separate one model from another.
• Amp-hours (Ah) measures capacity. A 4.0Ah battery holds less energy than a 6.0Ah battery of the same voltage, so it runs for a shorter time.

To compare batteries fairly, multiply volts by amp-hours to get watt-hours. A 40V 4.0Ah pack is about 160 Wh, a 5.0Ah pack is about 200 Wh and a 6.0Ah pack is about 240 Wh. Some brands market a maximum voltage rather than a nominal voltage, so treat watt-hours as a rough guide and read the maker page for the actual pack rating. Some mowers combine two 20V batteries to make 40V; the listing for the etoolab and Wild Badger Power models describes this, and it means you need both batteries inserted.

1. Greenworks 40V 21″ Brushless: Best self-propelled for big lawns and tool sharing

• Greenworks 40V 21″ Brushless Cordless (Self-Propelled) Lawn Mower
• 21 in. deck · brushless motor · self-propelled
• 5.0Ah battery and charger included
• Listed as compatible with 75+ tools on the Greenworks 40V platform

Best for: larger lawns or slopes where self-propel helps, especially if you want a long-lived battery platform with many tools.

Skip if: your yard is small; a self-propelled 21 inch deck is more mower than you need.

Pros

• Wide 21 inch deck cuts the number of passes.
• Self-propelled drive reduces effort on hills.
• Listing highlights a 75+ tool battery platform.
• Brushless motor, which makers say reduces maintenance.

Cons

• Single battery in the kit; confirm coverage per charge on the maker page.
• Costs more than push models.

2. SKIL PWR CORE 40 20-Inch: Best self-propelled with a bigger battery in the kit

• SKIL PWR CORE 40 Brushless 40V 20-Inch Self-Propelled Mower Kit
• 20 in. deck · brushless · self-propelled
• 6.0Ah battery and Auto PWR JUMP charger included
• A second kit lists a Smart Caddy with 6.0Ah and 4.0Ah batteries and a 150W charger

Best for: people who want a self-propelled mower with a larger-capacity battery in the box.

Skip if: you already own another brand’s 40V batteries and want to keep one platform.

Pros

• 6.0Ah battery has more stored energy than 4.0 or 5.0Ah packs.
• Self-propelled for slopes and longer lawns.
• Kit options let you choose one or two batteries.

Cons

• One-battery kit may need a recharge on bigger lawns.
• Smaller 20 inch deck than the Greenworks.

3. Worx WG745 17″: Best 2-in-1 push mower with two batteries

• Worx Cordless Lawn Mower, 40V 17″ 2-in-1, WG745
• 17 in. deck · brushless · mulching and bagging
• Listed for 1/4 acre
• 2 x 4.0Ah batteries and a 4.0A charger; PowerShare platform

Best for: quarter-acre lawns where you want two batteries in the box and a mulch-or-bag choice.

Skip if: you want self-propelled drive on hills.

Pros

• Two batteries let you swap and continue.
• 17 inch deck is a good compromise between width and handling.
• Brushless power per the listing.
• Platform shared with Worx PowerShare tools.

Cons

• Push drive; thick grass may need effort.
• Sits in the mid-to-high price bracket for push mowers.

4. Greenworks 40V 16in: Best compact push mower on a 40V platform

• Greenworks 40V 16in Push Lawn Mower, 4.0 Ah Battery and Charger
• 16 in. deck · brushless · push
• 4.0Ah battery and charger
• Marketed as lightweight with low noise and low maintenance

Best for: small yards, townhomes and anyone who wants a simple push mower from an established brand.

Skip if: your lawn is large; a 16 inch deck and one 4.0Ah battery run out of steam sooner.

Pros

• 16 inch deck is easy to maneuver.
• Battery works with other Greenworks 40V tools.
• Brushless motor.

Cons

• One battery in the kit.
• Narrow deck means more passes.

5. Litheli 40V 16″: Best two-battery bargain

• Litheli 16″ Cordless Mower, 40V Brushless Push Mower
• 16 in. deck · 6 cutting heights (25 to 75 mm) · 50 L bag and mulching
• 2 x 5.0Ah batteries and charger included
• Marketed as quiet and lightweight

Best for: small to medium lawns where you want two larger batteries without paying premium-brand prices.

Skip if: you want a brand with a large in-store tool lineup.

Pros

• Two 5.0Ah batteries in the kit.
• Six cutting heights.
• Mulching and bagging.
• Brushless motor.

Cons

• Smaller tool ecosystem than Greenworks or Worx.
• Push drive only.

6. EWORK 40V 14-Inch: Best light mower for tiny lawns

• EWORK 40V 14-Inch Cordless Lawn Mower
• 14 in. deck · 6 cutting heights · grass bag
• 2 x 4.0Ah batteries and a fast charger included
• Lightweight electric mower, per the listing

Best for: tiny yards, patios, narrow lawns and anyone who wants to carry a mower up steps.

Skip if: your lawn is more than a small patch; 14 inches is narrow.

Pros

• Easy to store and lift.
• Two batteries in the box.
• Six cutting heights.

Cons

• Narrow deck, more passes.
• Check the listing for motor type before you buy.

7. Dong Cheng 40V 21″: Best four-battery self-propelled kit

• Dong Cheng 40V Brushless Self-Propelled Lawn Mower, 21 Inch
• 21 in. deck · brushless · self-propelled · 7 height positions
• 4 x 4.0Ah batteries and a dual charger
• Mulching, bagging and side discharge; 2600 RPM, per the listing

Best for: larger lawns where you want a wide, self-propelled deck and several batteries for long sessions.

Skip if: you want a mainstream brand with local support.

Pros

• Four batteries make for long mowing sessions.
• Three discharge modes.
• Self-propelled and brushless.

Cons

• Less-known brand; check warranty and parts.
• Heavier and bulkier to store.

Also consider

• Kraftsense 40V 16″ Electric Lawn Mower: 2 x 5.0Ah batteries · brushless · 2-in-1 mulching and bagging · 6-position height. For small to medium yards.
• MZK 40V 16-Inch 2-in-1: brushless push mower · 5 height positions · dual batteries. A budget 16 inch option.
• Wild Badger Power 40V 16-in: brushless · 5 cut heights · 3-in-1 clipping modes · two 20V 4.0Ah batteries and a charger. A small-yard option.
• RB 40V 9″ Mini: ultra-light brushless mini mower with 3 cutting heights and upright storage. Meant for tiny spaces, not full lawns.

How we chose these 40V mowers

We did not personally use these mowers. The selection is research-based:

• 40V platform mowers only, with the voltage stated in the listing.
• Deck widths from 14 to 21 inches, including push and self-propelled models.
• Battery capacity stated in the kit, so you can compare energy.
• No more than two models from any brand.
• No renewed items, no tool-only listings.
• Specs only from the listing text.

General lawn-care guidance draws on university extension pages and consumer mowing guides.

Buying guide: how to choose a 40V cordless lawn mower

Step 1: pick the deck by lawn size

Use these as rough starting points. Time how long you currently take to mow, then check the maker page for run time per charge.

Step 2: understand battery capacity

Run time depends on grass height and density, terrain, cutting height and battery age. A 6.0Ah pack stores more energy than a 4.0Ah pack, so it runs longer in the same conditions. Two batteries let you swap, and a fast charger shortens the wait. If the listing does not give run time, assume you will need a spare battery on bigger lawns.

Step 3: choose push or self-propelled

• Push is lighter, cheaper and uses less battery. It suits flat lawns up to medium size.
• Self-propelled helps on hills and long lawns, and it uses more battery because it drives the wheels.

Step 4: look at motor and features

• Brushless motor: makers say it runs more efficiently and needs less maintenance than a brushed motor.
• Mulch and bag: check whether the mower comes with a bag and a mulch plug.
• Cutting height range: 6 positions covering about 25 to 75 mm, as on the Litheli, suit most lawns.
• Foldable handle: saves storage space.

Step 5: think about the platform

If you already own cordless tools, check which batteries you have before buying a mower. Greenworks lists its 40V mower as compatible with 75+ tools. Worx uses its PowerShare platform. SKIL has its PWR CORE 40 system. Matching platforms lets you buy bare tools later at a lower cost.

Step 6: care and charging

1. Charge batteries after use and avoid leaving them in a hot garage or in freezing temperatures.
2. Clear grass from under the deck after each mow, with the battery removed.
3. Sharpen or replace the blade according to the manual.
4. Store the mower with the battery out if the maker suggests it.
5. Follow the manual for winter storage and battery maintenance.

40V vs other cordless mower voltages

You will see 20V, 24V, 40V, 60V and 80V mowers. In general, higher voltage platforms target bigger decks and heavier use, while 40V sits in the middle for small and medium lawns. Greenworks lists a 60V self-propelled mower on its 21 inch platform, and some brands pair two 40V batteries to make an 80V mower. If your yard is larger than a half acre, check the 60V and 80V options in our separate guide. For most suburban lots, 40V is the practical middle.

Battery math: comparing kits by watt-hours

Kits arrive with different battery counts and sizes, which makes them hard to compare. Multiplying volts by amp-hours gives a rough stored-energy figure in watt-hours. The numbers below use a nominal 40V and the Ah figures from the listings. They are estimates for comparison, not run-time promises.

Two cautions apply. First, a self-propelled mower spends part of that energy driving the wheels, so a 21 inch self-propelled deck does not stretch the same energy as a 16 inch push mower. Second, some of these kits use two batteries at once rather than one at a time, so the total may be what powers a single mowing session rather than a spare. Check the maker page to see whether the batteries are used together or in turn.

How to stretch your battery on mowing day

• Mow dry grass. Wet grass clumps and makes the motor work harder.
• Keep the blade sharp. A dull blade tears grass and draws more power.
• Raise the deck for tall or thick grass. Cut a third of the height at a time, and lower the deck on a second pass if needed.
• Use mulching on healthy lawns. Bagging adds airflow resistance and weight, so it uses more energy.
• Clean under the deck. Packed clippings add drag.
• Start with a fully charged battery. Charge in a shaded room at moderate temperature.
• Mow in stripes you can finish. Plan the route to do slopes first, while the battery is full.

Cordless 40V mower vs gas and corded

A 40V mower is the middle path: no cord to snag and no engine care, at the cost of limited run time. If you want to compare quiet pushing options in more depth, our existing guide to battery push mowers covers that ground.

Common mistakes when buying a 40V mower

• Buying on voltage alone. Every 40V mower claims the same voltage; the Ah rating and the number of batteries matter more.
• Picking a tool-only listing by accident. Some listings sell only the bare mower. Confirm that a battery and charger are in the kit.
• Ignoring the charger speed. A slow charger means a long wait between sessions. Look for a fast or dual charger if you have a big lawn.
• Choosing too small a deck. A 14 inch deck is fine for a patio but tedious on a quarter acre.
• Overlooking weight. If you must lift the mower into a truck or up steps, check the weight on the maker page.
• Forgetting warranty and parts. Smaller brands may have limited service. Ask about blade and battery replacement before you buy.

Brushless vs brushed: does it matter on a 40V mower?

Most mowers in this guide advertise a brushless motor. A brushless motor uses electronics instead of carbon brushes to switch current, which makers say cuts wear, heat and noise and makes better use of the battery. A brushed motor is usually cheaper and fine for light work, but it has parts that wear out. If two mowers cost about the same, the brushless one is the safer long-term choice. Where a listing does not state the motor type, such as the EWORK 14-inch, check the maker page.

The cutting system matters as much as the motor. Look at three details: whether the deck is steel or plastic, how many height positions you get, and whether the bag is easy to remove. A sturdy deck stands up to bumps against stones and tree roots, six or seven height positions let you adjust through the season, and a bag with a handle makes emptying clippings quicker.

Seasonal battery care for a 40V platform

• Spring: inspect the battery for damage and charge it fully before the first mow.
• Summer: keep batteries out of a hot car or sunlit garage, and let a warm battery cool before charging.
• Fall: mow leaves with the mulching plug if the manual allows, and clear wet clumps from the deck.
• Winter: store batteries indoors at a moderate temperature. Many makers advise storing them partly charged rather than empty or full; follow your manual.

Replacement batteries are a real cost over the life of a mower, so ask how long a typical pack lasts and whether the platform keeps selling compatible batteries. Established platforms such as Greenworks, Worx and SKIL have a track record here, while newer or niche brands may be harder to source.

Frequently asked questions

What is the best 40V cordless lawn mower?

For small and medium lawns, the Worx WG745 or the Greenworks 40V 16in. For larger lawns and hills, the Greenworks 40V 21″ or the SKIL PWR CORE 40 20-Inch.

How long does a 40V mower run on a charge?

It varies with battery size, grass and terrain. Check the maker page for run time. A larger Ah battery runs longer.

Can I use my 40V trimmer battery in a mower?

Often yes, if both tools are from the same brand and platform. Check compatibility on the maker page.

Is a 40V self propelled lawn mower worth it?

If you have slopes, thick grass or a long lawn, yes. For flat small lawns, a push mower is simpler and lighter.

Are Litheli and EWORK mowers any good?

They offer two batteries at lower cost than premium brands. Check warranty terms and parts availability, since smaller brands have fewer local service centers.

Are 40V mowers powerful enough for thick grass?

Many handle regular lawns well. For very thick or tall grass, choose a self-propelled model with a bigger battery, and mow at a higher setting.

How should I store a cordless mower?

Remove the battery, clean the deck, and store both in a dry place. Follow your manual for winter care.

Which one should you buy?

• Medium lawn, push mower: Worx WG745 17″ with two batteries.
• Small yard, established brand: Greenworks 40V 16in.
• Best two-battery bargain: Litheli 40V 16″.
• Larger lawn or hills: Greenworks 40V 21″ or the SKIL PWR CORE 40 20-Inch.
• Very large lawn on a budget: Dong Cheng 40V 21″ with four batteries.
• Tiny yard: EWORK 40V 14-Inch.

Choose the deck by lawn size and the brand by the tools you may want later.

Sources

• Product listings and maker pages for each model named
• Consumer lawn-care guides
• University extension lawn-care publications
• Family Handyman

Last updated: November 2026