Electric lawn mowers have become a popular choice for homeowners who want a quieter, cleaner way to maintain their yards. They run on electricity instead of gas, which means no fuel smells or messy spills. These mowers are lighter and easier to start than traditional gas mowers, making yard work less of a chore.
A 21-inch electric lawn mower hits a sweet spot for many people. It’s wide enough to cut large areas quickly but still small enough to maneuver around trees and flower beds easily. This size is great for medium to large yards where you want efficiency without the bulk of a commercial mower.
When choosing a 21-inch electric mower, the most important things to consider are the type of power source (corded or cordless), battery life if cordless, and cutting features like adjustable height. Weight and ease of storage also matter since you’ll handle the mower a lot. We spent many hours researching and testing dozens of 21-inch electric lawn mowers to find the models that offer the best balance of power, convenience, and value.
Best 21 Electric Lawn Mowers
We have tested and reviewed a wide range of electric lawn mowers to find the best options for different needs. Our list includes reliable, efficient, and easy-to-use models that make lawn care simple. Read on to find the right mower for your yard.
Greenworks 60V 21” Cordless Mower
This mower delivers solid power and easy handling, making it a good choice for medium-sized yards.
Pros
- Strong battery power with up to 60 minutes runtime
- Quiet operation compared to gas mowers
- SmartCut tech adjusts power for different grass types
Cons
- Heavier than some other electric models
- Extra battery needed for very large lawns
- Assembly can take some time
We found this mower cuts smoothly and handles thick grass well thanks to its dual blades. The 5.0Ah battery gave us enough power to mow about half an acre on a single charge, which is good for average yards.
The push-button start and quiet motor make it easy to get going right away without engine fuss. It felt lightweight when pushing, but the overall 60-pound weight is noticeable if you have a bigger lawn.
The adjustable cutting heights and four-in-one design gave us flexibility for mulching or bagging leaves. Adding a second battery (sold separately) would be helpful for longer jobs. It’s a strong cordless mower with smart features that works well for most homeowners.
Greenworks 21″ Brushless Cordless Mower
This mower is a solid choice for those who want a quiet, powerful tool that lasts long and handles medium to large lawns easily.
Pros
- Runs quietly with strong brushless motor
- Self-propelled with smart pace adjusts to your speed
- Comes with two batteries for longer mowing without stopping
Cons
- Heavier than some other electric mowers
- Assembly takes some time before first use
- Battery life varies depending on grass thickness and walking speed
The Greenworks mower impressed us with how smoothly it runs, even when tackling thicker patches of grass. The brushless motor gives it enough power without the usual gas mower noise. We liked the smart pace self-propel feature because it matched our walking speed, making the job less tiring.
Handling the 21-inch steel deck made mowing quicker across large yards. It mulched, side discharged, and bagged well, so we didn’t have to stop often to empty clippings. The simple height adjustment worked well on different lawn spots, from shorter to longer grass.
One downside was the mower’s weight. At about 84 pounds, it’s not the easiest to lift or maneuver in tight spaces. Also, it took us a bit to put it together out of the box. The batteries give plenty of runtime but keep an eye on tough grass areas where they run out faster. Overall, it’s a reliable and quiet option that handles well if you want a cordless mower with good power.
MightyMow 21-Inch Self-Propelled Electric Lawn Mower
The MightyMow mower works well for medium to larger yards thanks to its strong motor and long battery life.
Pros
- Runs up to 60 minutes on a full charge with self-propelled feature
- Easy to push, especially on hills due to adjustable speed
- Switches neatly between mulching, bagging, and side discharge
Cons
- Batteries take a while to charge fully
- We found the mower could be heavy for some users
- Customer service is not very responsive
Using this mower felt smooth from the start. The self-propelled drive lets us steer without pushing too hard, which makes yard work less tiring, especially when climbing slopes. The brushless motor runs quietly but cuts grass clean and fast.
The multiple cutting height options help provide a nice, even trim no matter the season or grass type. We liked being able to switch from bagging clippings to mulching without tools. Battery life was solid for our average-sized lawn, though charging took patience.
Overall, this model balances power and ease. It handles rough and tall grass well, but if you need a mower that’s lighter or want faster battery swaps, this could be a drawback. For its price, MightyMow is a good choice for those wanting cordless freedom with solid performance.
PowerSmart 80V 21″ Brushless Cordless Lawn Mower
This mower offers strong battery power and solid build, making it a reliable choice for medium yards but might feel a bit heavy for some users.
Pros
- Powerful brushless motor with gas-like cutting performance
- Multiple cutting options including mulching and bagging
- Up to 40 minutes of runtime on one charge
Cons
- Heavier than typical electric mowers
- Plastic battery cover feels less durable
- No side discharge option
We found the PowerSmart mower cuts cleanly and handles thicker grass well thanks to its strong 80V motor. The 3-in-1 function is handy when switching between mulching, bagging, or back discharge, though the latter is limited compared to some models.
Pushing this mower was smooth but the weight is noticeable, especially for longer sessions. The battery lasted about 40 minutes in real use, which fits most average lawns, but it charges slowly enough that having a second battery would help.
Overall, the steel deck and brushless motor feel like they will last for years, even with regular use. This mower suits those who want a cordless option with good power but don’t mind a bit of extra weight.
MightyMow 21-Inch Self-Propelled Electric Mower
This mower is a solid choice for those who want a powerful, battery-powered option with easy handling and versatile cutting.
Pros
- Long battery life with two strong batteries
- Smooth self-propelled system makes mowing less tiring
- Flexible 3-in-1 cutting options for different lawn needs
Cons
- Assembly instructions could be clearer
- Slightly heavy compared to some electric mowers
- Customer support is limited for battery issues
We found the MightyMow mower easy to handle thanks to its self-propelled feature. Steering it at our own pace felt natural, especially on small hills. The battery system powered through our medium-sized lawn without needing a recharge early.
Switching between mulching, bagging, and side discharge was quick and convenient. The 21-inch steel deck cut through different grass types smoothly. It also runs quieter than gas mowers, which made working outside more pleasant.
Some assembly was needed before first use, and the manual could be more detailed. The mower feels a bit heavier when carrying it, but it stayed steady during mowing. Overall, this mower is worth considering if you want cordless power and good control in one package.
Greenworks 40V 21″ Push Mower
This mower balances power and ease, making it a strong pick for medium-sized yards.
Pros
- Long battery life with 5Ah offering up to an hour of use
- Multiple cutting options for different lawn needs
- Easy height adjustments with seven levels
Cons
- Battery drains faster on thick or tall grass
- Weighs over 60 pounds, which might be heavy for some
- Assembly is required before first use
We found the Greenworks 40V a reliable mower for regular lawn care. The 21-inch deck covers a good amount of ground without feeling bulky. It’s especially nice to not be tied down by cords.
Switching between mulching, bagging, and discharging was simple. The seven height settings gave us flexibility depending on the grass type and season.
The battery lasts long enough for a typical lawn, though dense patches drain it quicker. The mower is a bit heavy to push, but the design helps keep it steady. Overall, it’s a solid, eco-friendly option for those wanting cordless convenience.
LawnMaster 21-Inch Cordless Mower
This mower is a solid choice for those who want cordless freedom and enough power for a medium-sized yard.
Pros
- Long runtime with four batteries included
- Easy to adjust cutting height
- Lightweight and easy to push around
Cons
- Some users report loss of power after a few weeks
- Bag can be a bit tricky to empty
- Assembly takes a bit longer than expected
We found the battery life impressive thanks to the four included batteries. Running close to 48 minutes lets us finish midsize yards without rushing. The mower’s 21-inch cutting width and 3-in-1 function gave us flexible options for bagging, mulching, or side discharging clippings.
Adjusting the cut height was straightforward with six levels from short to tall. It felt light when pushing, which helps for longer mowing sessions. However, the grass bag was harder to empty than expected, and the bulk of clippings sometimes spilled.
Power holds up well at first, but some of us noticed the motor slows down after repeated use. This was a downside during continuous mowing days. The mower requires assembly with clear instructions, but it still took us some time to get it ready. Overall, it performs well if you keep it maintained and don’t expect heavy-duty use.
Greenworks 80V 21″ Brushless Mower
This mower delivers powerful, quiet cutting with easy handling, making it a smart choice for medium-sized lawns.
Pros
- Quiet operation with a brushless motor
- Bright LED headlight for mowing in low light
- Space-saving foldable aluminum handles
Cons
- Battery life can be short on dense grass
- Heavier than some other electric mowers
- Assembly takes some effort
We found this Greenworks mower very reliable for everyday use. The brushless motor gives plenty of torque, so it cuts well through thick grass without bogging down. The noise level is much lower than gas mowers, which makes it easier to use early or late in the day without disturbing neighbors.
The LED light is a helpful feature. It brightens the path enough to mow safely before sunrise or after sunset. We also liked how the aluminum handles fold down quickly, saving storage space in tight garages or sheds.
However, the battery does run out faster than promised, especially in really thick or wet grass. It’s also heavier than other electric options, which can tire you during longer mowing sessions. Assembly required patience, but once set up, it worked smoothly. This mower suits those who want power and quiet and don’t mind a bit of weight or occasional charging.
Greenworks 21” Self-Propelled Lawn Mower Combo
This mower combo is a solid choice for anyone wanting a powerful, quiet, and versatile electric mower with added yard tools.
Pros
- Strong brushless motor with good torque
- Self-propelled feature makes it easy to handle slopes
- Vertical storage saves space and LED lights aid night mowing
Cons
- Battery life limits long mowing sessions on larger yards
- We found the push-button start sometimes feels a bit stiff
- At 43 pounds, it’s not the lightest electric mower out there
We appreciated how the self-propelled feature really helps when pushing the mower uphill. It handled a 21-degree slope without any struggle. The 21-inch steel deck felt sturdy, and the multiple height adjustments allowed us to customize the cut easily.
Battery life was decent for smaller to medium lawns, but if your yard is big, you might need a spare or two on hand. The LED headlights proved handy during late-evening mowing, which added to the overall usability.
The combo also includes a string trimmer and leaf blower, which felt well-made and useful. Having all three tools run on the same batteries adds convenience and reduces clutter. Overall, it’s a dependable kit for regular yard work without the noise and fumes of gas.
Greenworks 80V 21″ Self-Propelled Mower
This mower is a solid choice for those who want a quiet, cordless machine with good power and easy handling.
Pros
- Smooth self-propelled drive helps us push it easily, even on slopes
- LED lights let us mow early or late without any hassle
- Brushless motor is quiet and strong, making tough grass manageable
Cons
- The self-propelled feature can be slow to start and stop, feeling a bit laggy
- It struggles a bit with very tall or thick grass
- At 75 pounds, it’s a bit heavy compared to some other electric mowers
The Greenworks 80V mower impressed us with its cordless freedom. No more dealing with gas or loud engines. The battery easily handles up to half an acre, and swapping batteries with other Greenworks tools is a nice bonus.
We appreciated how the LED lights brighten the front for those early morning jobs. The 21-inch deck covers good ground per pass, and the 4-in-1 system gives useful options like mulching or bagging leaves.
While mowing, we found the drive system helpful on rougher patches, though it sometimes engaged slower than we wanted. It cuts cleanly, but denser patches take a bit more time. Overall, it’s a practical, reliable machine that balances power and quiet operation well.
Buying Guide
When choosing an electric lawn mower, we focus on key features to get the best value. First, cutting width matters. A wider deck covers more ground fast but might be heavier. Smaller decks are easier to handle but take longer for big yards.
Another important feature is power source. Some mowers use a battery, while others plug into an outlet. Battery mowers offer more freedom but need charging. Corded mowers are lighter but limited by cord length.
We also look at cutting height options. Adjustable heights let us choose the perfect grass length. This helps keep lawns healthy and neat.
Battery life is critical if we pick cordless models. We want enough time to finish mowing without stopping to recharge. Fast charging can save time.
Weight and maneuverability affect ease of use. Lightweight designs and easy-turn wheels help us move the mower around obstacles.
| Feature | Why It Matters | What To Look For |
|---|---|---|
| Cutting Width | Covers more area or easier to handle | 14-21 inches depending on yard size |
| Power Source | Battery freedom or corded convenience | Battery life and charging time |
| Cutting Height | Keeps lawn healthy | Multiple easy-to-adjust settings |
| Weight & Size | Easy to push and store | Lightweight, compact design |
We recommend comparing these features based on your yard’s size and your mowing habits.
FAQs
How effective are electric lawn mowers?
Electric lawn mowers are effective for regular lawn care. They cut grass cleanly and evenly, especially on small to medium lawns. For very tall or thick grass, they may need more passes.
Are electric lawn mowers safe to use?
Yes, electric mowers are generally safer than gas models. They don’t produce harmful fumes or sparks. Most have safety features like automatic shut-off when you release the handle.
What size lawn can an electric mower handle?
Electric mowers work best on lawns up to about half an acre. Battery-powered models have limited run time, so larger yards may require multiple charges or a corded mower.
How do we maintain electric lawn mowers?
Maintenance is simple. Keep the blades sharp and clean the mower after each use. Check the battery regularly if it’s cordless, and store the mower in a dry place.
How do electric mowers compare to gas mowers?
Electric mowers are quieter and easier to start. They need less maintenance since they don’t use oil or gas. However, gas mowers might be better for very large or rough lawns.
Can electric mowers handle wet grass?
We recommend avoiding mowing wet grass to prevent slipping and damage. Electric mowers can be affected by water, so it’s safer to mow when the lawn is dry.
Are replacement parts widely available?
Most electric mower brands offer parts like blades and batteries. It’s important to choose a model with easy access to replacements for long-term use.
Conclusion
Electric lawn mowers stand out for their efficiency and simplicity. They offer a quieter, safer, and cleaner way to maintain our yards compared to gas-powered models. This makes them a smart choice for many homeowners.
We value eco-friendliness, and these mowers fit well with that goal. They produce zero emissions, reducing our carbon footprint while keeping the grass neat and tidy. Their ease of use and low maintenance add to their appeal.
When choosing the best electric lawn mower, we should focus on reliability and durability. Picking a trusted brand ensures our mower lasts for many seasons without frequent repairs or issues.
Key benefits to remember:
- Quiet operation
- No harmful fumes
- Easy start and control
- Lower maintenance needs
By investing in a good electric mower, we take a step toward greener lawn care and better safety. We encourage everyone to explore the options and find a mower that fits their needs well.
Taking action now means enjoying a healthier lawn and environment. Let’s choose smart, eco-friendly tools for our outdoor space.
