Best Cordless Lawn Mower

The gas mower won’t start again. Or the extension cord keeps tangling around the rose bush. That’s the moment most people start shopping for a cordless lawn mower.

Modern battery mowers have closed the gap with gas in cutting power while killing the noise, fumes, and maintenance headaches. The trick is matching voltage, deck size, and battery ecosystem to your specific yard, because a mower that suits a postage-stamp lawn will feel underpowered on a half-acre.

I tested five cordless models across Casince and Greenworks, ranging from a budget 16-inch push mower to a self-propelled 80V machine. Here’s what held up, what didn’t, and which one deserves your money.

Here is a quick look at the key specs that separate these five mowers.

Features	Casince 17-Inch	Greenworks 40V 16-Inch	Greenworks 60V 21-Inch	Greenworks 80V 21-Inch	Greenworks 40V Brushless
Deck Size	17 inches	16 inches	21 inches	21 inches	16 inches
Battery Voltage	20V (dual)	40V	60V	80V	40V
Runtime	Up to 40 min	Up to 1/3 acre	50% more torque than 40V	Up to 1/2 acre	Up to 30 min
Drive Type	Push	Push	Push	Self-propelled	Push
Deck Material	Lightweight (14 kg)	35% lighter than steel	Steel	Steel	Lightweight
Best For	Small yards	Budget buyers	Tough grass	Large lawns	Ecosystem builders

Casince 17-Inch Cordless

The Casince 17-inch is a dual-battery walk-behind mower built for small and medium residential lawns. It runs on two 20V 4.0Ah batteries that push cutting time to roughly 40 minutes, covering up to 5,380 square feet per charge under test conditions.

What stands out is the simplicity. One-button start plus a pull-bar activation means no yanking a cord or priming a carburetor. The 17-inch deck with six height settings from 1 to 3 inches gives you fine control over cut length, and the 50-liter collection bag holds a surprising amount of clippings before needing a dump. The brushless motor spins at 3000 RPM, which keeps blade speed steady through normal residential grass without bogging down.

The trade-off is weight. At 14 kg (about 31 pounds), it’s not the lightest mower in this lineup, and the dual-battery setup adds bulk. Also, 20V is on the low end for voltage, so thick, wet grass will strain it more than a 40V or 60V model. It’s fine for weekly cuts on a tidy lawn, but don’t expect it to chew through overgrown fields.

• 17-inch cutting deck with six height positions (1–3 inches)
• Dual 20V 4.0Ah batteries deliver up to 40 minutes of runtime
• 50-liter rear collection bag reduces emptying stops
• Brushless motor with 1200W max output at 3000 RPM
• One-button start with lightweight 14 kg frame

Best for: Homeowners with small to medium lawns who want a simple, portable mower without investing in a high-voltage battery platform.

Greenworks 40V 16-Inch Push

This Greenworks 40V is the entry point into the brand’s vast 40V ecosystem. It’s a 16-inch push mower with a 4.0Ah battery that handles up to one-third of an acre per charge, making it a solid match for smaller city lots or tidy suburban yards.

The single-lever height adjustment with five positions is genuinely convenient, letting you change cut height without fiddling with each wheel. The 2-in-1 system offers mulching and rear bagging, which covers most homeowners’ needs. It’s also 35% lighter than steel deck mowers, so lifting it into a shed or maneuvering around flower beds feels manageable. The 3-year warranty adds peace of mind.

The limitation here is power. A 16-inch deck means more passes on larger lawns, and the 40V motor won’t power through tall, damp grass without slowing down. There’s no side discharge either, so if you prefer that option, this mower won’t accommodate it. For very small yards, it’s nearly perfect; for anything bigger, you’ll want more voltage.

• 16-inch deck with single-lever, 5-position height adjust
• 40V 4.0Ah battery cuts up to 1/3 acre per charge
• 2-in-1 system: mulch or rear bag
• Ultra-lightweight construction, 35% lighter than steel
• Backed by 3-year limited warranty

Best for: First-time cordless buyers with small lawns who want an affordable mower that shares batteries with trimmers and blowers.

Greenworks 60V 21-Inch Push

The Greenworks 60V steps up significantly in cutting capability. It delivers 50% more torque than 40V models and spins the blade at 3200 RPM, which the manufacturer says matches the output of a 150cc gas mower. That makes it a genuine gas replacement for most residential lawns.

The steel deck is built to handle damp grass and rough conditions, and it carries an IPX4 waterproof rating, so light rain won’t force you back inside. The SmartCut dual blades self-sharpen as you mow and automatically adjust power when they hit tall or thick patches, which prevents bogging down. You also get 4-in-1 versatility: mulching, bagging, side discharge, and a turbo leaf mode for clearing autumn debris. Oversized 10-inch rear wheels and 8-inch front tires make pushing feel easier than the weight suggests.

It’s not self-propelled, which is the main drawback for larger properties or slopes. Pushing a 21-inch steel deck mower across a half-acre will tire you out. The 5.0Ah battery is also the only one included, so if your lawn exceeds what one charge can handle, you’ll need a second battery, and those aren’t cheap.

• 60V brushless motor with 50% more torque than 40V models
• 21-inch steel deck with IPX4 water resistance
• SmartCut dual blades self-sharpen and adjust power automatically
• 4-in-1: mulch, bag, side discharge, turbo leaf mode
• LED headlights for low-light mowing

Best for: Homeowners with medium to large flat lawns who want gas-level cutting power without the maintenance, and who don’t mind pushing.

Greenworks 80V 21-Inch Self-Propelled

The Greenworks 80V is the flagship here, and it earns that position. It’s a 21-inch self-propelled mower with rear-wheel drive and variable speed control, which makes a real difference on slopes or when you’re covering a larger yard. The brushless motor delivers strong torque, and the steel deck feels built to last.

Runtime is rated up to half an acre on a single 4.0Ah charge, which is respectable for an 80V system. The self-propelled drive takes the strain off your arms and back, and the variable speed lets you match your walking pace. LED headlights are genuinely useful if you’re mowing after work on a summer evening. It’s also 3x quieter than gas, so you can mow early without waking the neighbors. The 4-year warranty on tool and battery is the longest in this roundup.

The downsides are cost and weight. This is the most expensive mower here, and the 80V platform means batteries are a bigger investment if you need spares. The 4.0Ah battery is also on the smaller side for an 80V system; if your lawn is close to the half-acre limit, you may want the larger-capacity battery option.

• 80V brushless motor with 21-inch steel deck
• Self-propelled rear-wheel drive with variable speed control
• Cuts up to 1/2 acre per 4.0Ah charge
• LED headlight for early morning or evening mowing
• 4-year limited warranty on tool and battery

Best for: Owners of larger or sloped lawns who want self-propelled convenience and are willing to pay for the highest performance in this lineup.

Greenworks 40V Brushless Push

This second Greenworks 40V model looks similar to the first, but it’s a different animal. The key upgrade is the brushless motor, which provides more torque, quieter operation, and a longer lifespan than the brushed motor in the other 40V mower. Runtime is rated up to 30 minutes on a 4.0Ah battery, with a full charge taking about two hours.

The 16-inch deck with a 5-position single-lever height adjustment offers cutting heights from 1.25 to 3.375 inches, giving you more range than the other 40V model. It’s lightweight and easy to maneuver, with push-button start. Like its sibling, it offers 2-in-1 mulching and rear bagging. It also works with the same 40V battery platform, so if you already own Greenworks 40V tools, this slots right in.

The trade-off is that 30 minutes of runtime is less than the other 40V model’s 1/3 acre rating, and the smaller battery means you’ll be charging more often on larger lawns. It’s also worth noting this one is listed as scarce on Amazon, so availability may fluctuate. For a small yard under 1/4 acre, it’s a fine choice, but the standard 40V model offers better value if runtime is your priority.

• 40V brushless motor with 16-inch deck
• Up to 30 minutes runtime on 4.0Ah battery
• 5-position height adjust from 1.25 to 3.375 inches
• 2-in-1 mulching and rear bagging
• Compatible with 75+ Greenworks 40V tools

Best for: Homeowners already invested in the Greenworks 40V ecosystem who want a lightweight, brushless mower for small lawns.

How We Chose These Products

I focused on real-world usability rather than spec-sheet bragging. That means looking at how each mower handles thick grass, how long the battery truly lasts under load, and how easy it is to store and maintain. Voltage and amp hours matter, but only insofar as they translate to actual cutting performance on a typical residential lawn.

I also weighed the battery ecosystem. A cordless mower is rarely the only tool you’ll own; if the brand offers compatible trimmers, blowers, and chainsaws, the investment pays off across your whole shed. Warranty length and deck material factored in too, since those speak to longevity. The five mowers here represent the best balance of power, price, and practicality across different yard sizes and budgets.

Buying Guide: What Really Matters

Voltage is the first number to check. Higher voltage (60V or 80V) generally means more torque and better performance in thick or wet grass. Lower voltage (20V or 40V) is fine for small, well-maintained lawns but will struggle with heavy growth. Amp hours (Ah) determine runtime, so a 4.0Ah battery lasts longer than a 2.0Ah at the same voltage.

Deck size dictates how many passes you’ll make. A 16-inch deck suits yards under 1/4 acre; 21-inch decks cover larger areas faster. Deck material matters for weight and durability. Steel decks are tougher and resist rust better, but they’re heavier. Composite or aluminum decks are lighter and easier to maneuver but may not last as long.

Consider the drive type carefully. Self-propelled mowers are worth the extra cost for sloped yards or anyone who finds pushing a burden. Push mowers are lighter, cheaper, and fine on flat ground. Also think about storage space. Folding handles help, but check the folded dimensions against your shed or garage before buying.

Our Top Recommendation

The Greenworks 60V 21-Inch Push Mower is the best overall pick for most homeowners. It delivers gas-level cutting power with a steel deck, self-sharpening blades, and 4-in-1 versatility, all without the noise and fumes of a combustion engine. The 60V platform strikes the right balance between performance and cost, and the 4-year warranty backs it up.

If you have a larger or sloped lawn, the Greenworks 80V Self-Propelled model is worth the upgrade for the rear-wheel drive alone. On a tight budget, the standard Greenworks 40V 16-Inch Push Mower offers reliable cutting for small yards at a lower entry price. And if you’re already using Greenworks 40V tools, the brushless version is a natural fit for your battery collection.

Frequently Asked Questions

How long do cordless mower batteries actually last before they need replacing?
Most lithium-ion batteries degrade noticeably after 2-3 seasons of regular use. You’ll see runtime drop by 20-30% as cells age. Replacement batteries for 40V systems typically cost less than 60V or 80V units, so factor that into your long-term budget. Storing batteries indoors at moderate temperatures slows the degradation.

Can a cordless mower handle wet grass?
It depends on the voltage and deck design. The Greenworks 60V has an IPX4 waterproof rating and handles damp conditions well. Lower-voltage mowers will struggle with wet, heavy clippings that clog the deck. Best practice is to mow when grass is dry, but if you must mow wet, choose a higher-voltage model and clean the deck afterward.

Are cordless mowers quieter than gas mowers?
Yes, significantly. Gas mowers run around 90-95 decibels, while cordless models typically operate at 70-80 decibels. The Greenworks 80V is rated 3x quieter than gas. That’s a real advantage for early morning mowing or homes with close neighbors, and it means you don’t need hearing protection.

Do I need a second battery for a cordless mower?
If your lawn is near the rated maximum for the included battery, yes. A second battery lets you swap and keep going without waiting for a recharge. Check the recharge time; the Greenworks 40V takes about two hours to charge, so a spare is almost necessary for yards larger than a quarter acre.