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What is a brushless lawnmower? 25 Things You Should Know

If you like to cut your lawn grass in a quiet neighborhood early in the morning, you do not want to make a lot of noise and disturb people still sleeping or enjoying their morning. Maybe your neighbors are already complaining about the sound of your mower. In these cases, you should consider buying a brushless electric lawnmower. Not only is it quieter than other lawnmower types, but a brushless mower also requires less maintenance. In this article, we’ll tell you all about brushless mowers, discuss their pros and cons, and provide some info on the best brushless mower out there.

What is a brushless lawnmower:

A brushless lawnmower is simply a mower that uses a brushless electric motor. A brushless motor uses a permanent magnet as the rotor (the part that rotates) and coils outside. This means that there is no need to get electricity to the motor’s moving part. This means there are no brushes needed resulting in less noise and no energy loss due to friction. In the past, brushless motors were challenging to make and much more expensive due to more complex motor control. Using a brushless motor increases the lawnmower’s battery efficiency, makes it more durable, and needs less maintenance.


Pros of using a Brushless Lawnmower:

● Quieter mowing:

Brushless lawnmowers can make the mowing more peaceful since they produce much less noise than brushed mowers. This means that a brushless mower is better suited for use at any time of the day. Of course, the motor is not the only noise a lawnmower makes. Also, the rotating blade and other parts make some noise. To make the mower as silent as possible, you should look at those items as well.

● Less overheating:

They don’t overheat as quickly as lawnmowers with brushed engines. The coils are on the outside of the motor and can cool down more easily.

● Adjust according to requirements:

Brushless mowers have a much more sophisticated electronic motor management system. Depending on the brand and type, the lawnmower can adjust the motor settings according to the requirements. When it’s moving through small grass, it can slow down, and when it gets to thicker grass, it can increase its speed. For a cordless lawnmower, it means that energy can be saved this way. For an electric mower with a brushed motor, this is more difficult and less efficient to do.

● More Powerful:

Brushless mowers are powerful; they can do heavier tasks quicker, with no indications of slacking. It is also easier to produce more powerful engines as the coil sits on the outside and can be made larger.

● Require less Maintenance:

Brushless lawnmowers require less maintenance. There is no need to routinely clean and replace the brushes as you would need to do for a brushed lawnmower.

● Better Battery Optimization:

With the correct batteries, you can cut bigger yards with brushless mowers. Since there is no energy loss between the rotor and the stator, the energy is used more efficiently. Without rubbing, the mower works more productively under more extreme situations.

Cons of a Brushless Lawnmower:

● Expensive:

The price of a brushless mower is higher than that of a brushed one. A brushless mower uses a more complex smart electronic controller, which is like a small computer. This will increase the cost slightly.

● Vibrations:

When the engine is working at low speeds, slight vibrations can be produced. This is normal, and they should diminish at higher speeds.

● Resonance:

The power frequency can sometimes match or come closer to other parts’ natural vibration frequency, resulting in some resonance.

● More complex:

When tools are powered with a brushless motor, the machine will be more complicated. More complexity means that more parts can malfunction. But it has to be said that current brushless motors are very reliable.

Comparing a Brushless Mower with a Brushed Mower:

Brushless mowers have an efficiency of around 80 to 90 percent.
Brushed mowers have an efficiency of around 60 to 75 percent.
Less friction in the motor.
More friction in brushed motors.
Brushless motors overheat less quickly. Sometimes the motor management electronics has a special build-in function to mitigate this problem.
A brushed engine will overheat more quickly.
Brushless motors are slightly more expensive because they need a more complex motor management.
Brushed motors are less complicated and thus are cheaper.
Little to no maintenance is required.
More maintenance is required.

Working of a Brushless Lawnmower:

A brushless motor uses a permanent magnet as the rotating part. The coil of the motor will surround this rotating magnet. This is the opposite of a brushed motor. A brushed motor uses a coil as the rotating part, and the permanent magnet will surround it. So, in that case, the magnet will not rotate. The problem with a brushed motor is that the electric power needs to be delivered to the rotating part. For this, the motor uses brushes. But those brushes have a lot of wear and tear, that is why they need more maintenance.

In the case of the brushless motor, the coils are divided into several parts, all on the outside. In this case, it is easy to power them just using some wires. The problem with brushless motors is that the coils need to be engaged at precisely the right time, so the permanent magnet is attracted will turn. To do this, the motor has a sensor that knows the rotating magnet’s position, and the motor controller uses this position to power the correct coil at the right time.

Brushless motors have more advantages. Since the copper windings are outward of the engine game plan, there is space to make them bigger. This option is not available for a brushed motor. Moreover, brushless motors don’t have the scouring and voltage drop associated with brushed motors.

Some of the Best Brushless Mowers in the Market:

Brushless mowers are all-electric lawnmowers. Let us have a look at some brushless lawnmowers and their properties.

● Greenworks Pro 60V Brushless 21″ Lawnmower W/ 5.0 Ah Battery:

This is a brushless mowerfrom Greenworks. It offers an hour-long runtime with a fully charged 5.0 Ah battery. It is easy to use and low maintenance and is not very heavy.

● Greenworks Pro 80V Cordless Brushless 21″ Lawnmower:

Another brushless mower from Greenworks. It gives up to 60 minutes of run time on one charge with a fully charged battery. It uses a high-productivity brushless engine. This mower is also suited for bigger yards, and it has a 30 minutes fast-charging time.

● Sun Joe Brushless Mower iON 16 LM:  

This lawnmower is a 600-watt brushless motor. With its reasonable speed, this mower is well suited for both smaller and medium yards. For more significant areas, you will need to recharge to charge the batteries multiple times.

● DEWALT DCMW22OP2 2× 20V DW Lawnmower:

This efficient DEWALT lawnmower also uses a brushless motor. If you plan to use it for larger areas, it is advisable to purchase a spare battery. The lawnmower can easily be adjusted between 1.5 and 3.4 inches so that you can use it for both tall and short grass. The Dewalt mower is easy to use and performs three functions at one time: mulching, bagging, and it has a discharge system in the back.

Life-Span of a Brushless Motor:

We have seen that brushless motors are superior to brushed motors from various perspectives. The question is, what about life expectancy? Do brushless engines sacrifice their service life for more productivity?

The correct answer is no. Brushless engines usually last more than brushed engines. Brushed motors can achieve a lifespan somewhere in the range of 1,000 to 3,000 hours, while brushless motors can last for a much larger number of hours under similar conditions. It is common for brushless motors to provide a service life of tens of thousands of hours.

The reasons behind the longer service life of a brushless mower are less friction and wear in the motor and less overheating situations.

Do Brushless Mowers Justify their Cost?

Coming another important: Is the increased cost of a brushless mower justified?

The answer is yes, this mower is worth the extra money. Let’s see why.

Brushless mowers have numerous advantages over brushed motors. The most important ones are better efficiency and the need for less maintenance. Because the copper windings are outside the motor, there is room to make them larger. This makes the motor more powerful, something that can’t be done with a brushed motor. In addition to this, they have highly reduced friction and no voltage drops.

The benefits you get from a brushless motor justifies the higher cost.

Final remarks

It is clear that brushless mowers are better in many different ways. They are more efficient, make less noise, require less maintenance, and are more comfortable to use. The advantage of portable electric lawnmowers is that they will last longer on a charge, are stronger, have a longer lifespan, and need less maintenance. If you search for a less noisy way to cut your grass, a brushless mower will be your best solution.

Understanding Brushless Lawn Mowers: Intelligent Motors

• What Differentiates Brushless Lawn Mowers

Brushless lawnmowers are a special breed. Unlike their brushed counterparts, brushless models incorporate an intelligent controller and a circuit board. This unique combination performs real-time diagnostics, guiding the motor’s responses to various demands.

• The Role of the Circuit Board in Brushless Lawn Mowers

Essentially, the circuit board in a brushless lawn mower is its brain. It continuously monitors the operations of the mower, evaluating the status and demand of the motor. This constant monitoring allows the circuit board to adapt the mower’s operations on the fly.

Whether it’s speed adjustment, reducing energy consumption, or enhancing the longevity of the motor, the circuit board plays a crucial role in maintaining optimal mower performance.

• The Intelligence of the Controller

Working hand in hand with the circuit board is the intelligent controller. This integral component executes the instructions from the circuit board, effectively dictating the motor’s actions.

This swift communication between the controller and motor offers smoother handling and efficiencies that brushed motors simply can’t offer.

For instance, if heavy grass is causing the motor to strain, the intelligent controller promptly reduces speed and adjusts torque, effectively preventing overheating and potential motor damage.

• Significance of Real-Time Monitoring

Real-time monitoring proves paramount in conserving energy and enhancing mower durability. By enabling immediate reaction to conditions, much unnecessary stress and potential damage to the motor can be averted.

This, in turn, not only enhances the lifespan of the mower but also results in considerable energy savings.

• Increased Performance with Brushless Motors

Brushless motors offer substantial advantages compared to typical brushed motors. While brushed motors are prone to wear and tear and can overheat, brushless motors with onboard diagnostics and self-regulation not only last longer but perform better, too.

The immediate motor response to varying conditions means superior performance in different terrains and grass conditions.

• Brushless Motors: The Environmental Angle

From an environmental perspective, brushless motors are standout performers. They consume less power than their brushed counterparts, thereby reducing their carbon footprint. Moreover, some models are specifically designed to lower noise pollution, making them a more neighborhood-friendly choice.

• Brushless Lawn Mowers: A Cost-effective Choice

One might question the cost-effectiveness of brushless lawnmowers given their generally higher upfront cost. However, when considering energy savings and the extended lifespan of the mower, brushless models become a cost-effective choice in the long run.

• Expert Recommendation: Opt for Brushless Lawn Mowers

From my personal perspective and years of experience, I highly recommend investing in a brushless lawn mower. The advanced technology of these mowers makes yard work easier, more energy-efficient, and environmentally friendly.

If you want to understand more about the technical aspects of brushless motors, I suggest reading this comprehensive article from the MIT Technology Review. They provide an excellent breakdown of how brushless motors work and why they outperform brushed motors.

In conclusion, going for a brushless lawn mower is a smart decision, both for you and the environment. They may cost more initially, but the benefits far outweigh the costs. Don’t just take my word for it; explore the facts and decide for yourself.

• Eco-friendly Features of Brushless Mowers

Brushless mowers are the epitome of green technology in contemporary lawn maintenance. They enjoy a clear edge over traditional lawnmowers due to their eco-friendly features. One of these notable environmental benefits is the absence of exhaust fumes.

– Pristine and Fume-Free Mowing

Traditional lawnmowers are notorious for emitting pungent exhaust fumes. This is a direct affront to our ongoing efforts to preserve the environment. The ensuing air pollution harbors potential hazards not only for the environment but also for human and animal health.

Brushless mowers, on the other hand, are powered by electricity or batteries. This implies that they don’t burn any type of fuel to operate. Therefore, zero exhaust fumes are produced during their operations.

According to the United States Environmental Protection Agency, regular lawnmowers emit harmful compounds such as carbon monoxide, hydrocarbons, and nitrogen oxides into the atmosphere.

The brushless technology in these mowers promotes a greener and cleaner environment. It guarantees debris-free and fume-less mowing, ensuring a refreshing garden experience.

– Noiseless Operation: A Boon to Urban Living

Noise pollution is a pertinent issue in modern urban and suburban living. Traditional gas-powered lawnmowers contribute significantly to this ongoing problem. Frequently, the maddening noise from these machines disrupts tranquil surroundings and can even be detrimental to human health.

How does the brushless technology fit into this narrative? These mowers, thanks to their innovative engineering, operate in near silence. The peace in your neighborhood remains undisturbed while these devices go about their grass-cutting routine.

An article published by the U.S National Library of Medicine underscores the health risks associated with prolonged exposure to high-decibel noise. By using brushless mowers, not only are we creating a tranquil environment, but we’re also helping protect our health.

– The Case for Brushless Mowers

I recommend brushless mowers for a myriad of reasons. However, their prominent environmental benefits clearly set them apart.

Their zero-emission operation ensures clean and fresh air while maintaining a pristine landscape. Additionally, the noiseless operation of brushless mowers protects our peace and serenity.

In this era of heightened environmental concerns, it’s essential to adopt more sustainable practices. As a conscious lawn owner, swapping your gas mower for a brushless one reiterates your commitment to a greener planet.

As an experienced professional, I assure you that the shift to brushless mowers is not only a necessity but an upgrade to better lawn care.

– Summing Up

It’s clear that brushless mowers possess an array of environmental benefits over traditional mowers. From zero exhaust emissions to minimal noise, the advantages are compelling. Consequently, these devices offer a more eco-friendly, healthier, and quieter alternative to maintaining our green spaces.

Reiterating the advice from the U.S Department of Energy, with every small step towards sustainability, we contribute to a larger goal – a healthier and cleaner planet for all. Adopting the use of brushless mowers is a step in the right direction.

It’s time to let go of our traditional mowers and embrace this new age, green technology. The environment, after all, is not an inheritance from our forefathers but a loan from our children.

The Advantages of Brushless Mowers

• Superior Technology of Brushless Mowers

One characteristic that sets the brushless mower apart is its inclusion of highly advanced technology. Unlike conventional engines that operate with brushes to trigger their motion, brushless mowers utilize a magnet system for movement.

The magnet is aligned within the engine to create a unique magnetic field for the induction of motion. This smart technology enhances operational efficiency for the user.

According to Stanford University research, advanced technology in brushless mowers leads to a more precise and efficient cut.

• Increased Efficiency

The efficient operation of brushless mowers is worth discussing. The motor’s brushless design decreases friction, resulting in more efficient energy usage. It can accomplish more work on a single charge compared to a mower with a brushed motor.

I recommend users who have larger lawns consider a brushless mower because of the increased energy efficiency. You will finish the mowing faster and save energy and time as well.

• Enhanced Reliability

Reliability is another notable strength of brushless mowers. The lack of brushes means there are fewer parts that can wear out or break down, ensuring the mower’s reliable performance over its lifetime. Less maintenance is required compared to traditional models, making the brushless mower a dependable option.

According to the U.S. Department of Energy, brushless motors have long-term reliability due to lower operating temperatures, which improves overall performance and longevity.

• Extended Longevity

Brushless mowers significantly outlive their brushed counterparts because of their superior construction and operational design. Minimized wear and tear on the engine extends its lifespan.

Traditional brushed motor mowers are estimated to last roughly a few hundred hours of use, while a brushless mower can last thousands of hours. It makes the slightly higher upfront cost of a brushless mower well worth considering for homeowners seeking a long-lasting lawn care solution.

• Compared to Standard Motors

Brushed motors are mechanically simpler and cheaper to produce. However, they have a shorter lifespan due to wear and deterioration over time. They also experience torque ripple, which causes noise and vibration, affecting the mower’s performance.

On the other hand, brushless motors are quieter, more efficient, and have a lower total cost of ownership over time. They run cooler and are known for their constant torque, delivering better performance overall.

As per the Consumer Product Safety Commission, using brushless mowers can also be a great safety measure as they are well-built and don’t have many parts that can malfunction or cause an accident.

The brushless mowers have ushered in a new era of lawn maintenance that values efficiency, reliability, and longevity.

I would strongly recommend this for any homeowner, particularly those with larger lawns, who are serious about maintaining their external landscape and seek to invest in a tool that will provide lasting value.

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  1. Renee Rose says:

    What is the environmental impact of using brushless mowers?

    • Allard Vdhooft says:

      Brushless mowers have minimal environmental impact due to lower noise levels, reduced maintenance, and better battery optimization. Consider investing in one for a greener solution.

  2. Florence Fletcher says:

    Are there any safety concerns related to brushless mowers?

    • Allard Vdhooft says:

      Brushless mowers are safer due to their reliable construction and fewer parts that can malfunction. They also last longer and require less maintenance, making them a smart choice for efficient and reliable lawn care.

  3. Avery Gregory says:

    Are brushless mowers easy to repair in case of damage?

    • Allard Vdhooft says:

      Repairing a brushless lawnmower is easier due to fewer parts that can wear out or break down, ensuring reliable performance over its lifetime. Less maintenance is needed, making it a durable choice for lawn care.

  4. Shannon Nichols says:

    Can brushless mowers be used on slopes?

    • Allard Vdhooft says:

      Yes, brushless mowers can be used on slopes due to their efficiency, reliability, and extended longevity. They are a great investment for quieter, more efficient lawn maintenance.

  5. Norma Williamson says:

    What is the average lifespan of a brushless motor?

    • Allard Vdhooft says:

      The average lifespan of a brushless motor is typically tens of thousands of hours, compared to brushed motors which last a few thousand hours. The longevity justifies the higher cost.

  6. Brad Richardson says:

    Great insight into the technology behind brushless mowers, I learned a lot!

    • Allard Vdhooft says:

      Thank you, Brad! I’m glad you found the information on brushless mowers useful. If you have any more questions or need further details, feel free to ask. Happy mowing!

  7. Josephine Rice says:

    The explanation of how brushless motors work was clear and easy to understand.

    • Allard Vdhooft says:

      Thank you so much, Josephine! I’m glad you found the explanation clear and easy to understand. If you have any more questions or need further clarification, feel free to ask!

  8. Jennifer Silva says:

    Do brushless mowers come with different cutting heights?

    • Allard Vdhooft says:

      Yes, brushless mowers come with different cutting heights, making them versatile for various lawn types and grass lengths. They offer quiet operation and require less maintenance, providing a reliable and efficient mowing experience.

  9. Jamie Franklin says:

    The section on environmental benefits convinced me to switch to a brushless mower for a greener yard.

    • Allard Vdhooft says:

      Thank you for sharing! I’m glad the environmental benefits of brushless mowers resonated with you. Enjoy your greener, quieter yard with your new brushless mower.

  10. Jesse Adams says:

    Can brushless mowers handle wet grass?

    • Allard Vdhooft says:

      Yes, brushless mowers can handle wet grass due to their advanced technology, efficiency, and reliability. They offer a quieter, more durable, and low-maintenance option for mowing your lawn.

  11. Jessica Evans says:

    Do brushless mowers need special charging stations?

    • Allard Vdhooft says:

      Brushless mowers do not need special charging stations. They can be charged with a regular outlet. Enjoy the quiet lawn mowing!

  12. Lewis Alexander says:

    I appreciate the recommendation to invest in a brushless mower for better long-term value.

    • Allard Vdhooft says:

      Thank you, Lewis! Brushless mowers are definitely a great investment for long-term value and peace of mind. Enjoy your quieter mowing sessions!

  13. Dora Smith says:

    I never knew brushless mowers required less maintenance, that’s a game-changer!

    • Allard Vdhooft says:

      Thank you, Dora! Brushless mowers are indeed a game-changer with less maintenance and quieter operation. They offer a more efficient way to cut grass while being environmentally friendly.

  14. Wallace Knight says:

    “What sets brushless lawnmowers apart from other types? How does the intelligence of a brushless mower’s controller affect its performance?”

    • Allard Vdhooft says:

      Hi Wallace, a brushless lawnmower’s intelligent controller helps optimize performance by adjusting speed, reducing energy consumption, and enhancing motor longevity. The circuit board acts as the mower’s brain, making real-time adjustments to meet various demands.

  15. Eric Butler says:

    How heavy are brushless mowers compared to traditional ones?

    • Allard Vdhooft says:

      Brushless mowers are lighter than traditional ones, making them easier to maneuver. Consider the Greenworks Pro 80V for a powerful, yet lighter option for your lawn care needs.

  16. Theresa Fernandez says:

    Thank you for providing information on specific brushless mower brands, very helpful!

    • Allard Vdhooft says:

      Thank you, Theresa! I’m glad you found the information on brushless mower brands helpful. If you have any more questions or need further assistance, feel free to ask. Happy mowing!

  17. Dora Barrett says:

    I appreciate the detailed comparison between brushless and brushed mowers.

    • Allard Vdhooft says:

      Thank you, Dora! I’m glad you found the comparison helpful. Let me know if you have any more questions about brushless mowers!

  18. Jesse Sanchez says:

    Are brushless mowers suitable for smaller yards?

    • Allard Vdhooft says:

      Yes, brushless mowers are suitable for smaller yards due to their quiet operation, less maintenance, and efficiency. They are a great option to consider for a peaceful mowing experience.

  19. Gene Palmer says:

    The pros and cons section was very informative, helped me understand the benefits.

    • Allard Vdhooft says:

      Thank you, Gene! I’m glad you found the pros and cons section helpful in understanding the benefits of brushless lawnmowers. Happy mowing!

  20. Ted Chavez says:

    Interesting read on brushless mowers, I didn’t know they were so advanced!

    • Allard Vdhooft says:

      Thank you, Ted! Brushless mowers are indeed advanced and offer many benefits like less noise and maintenance. They are a great investment for a peaceful and efficient lawn care routine.

  21. Jean Shaw says:

    I’m impressed by the efficiency and power of brushless mowers, definitely considering getting one.

    • Allard Vdhooft says:

      Thank you, Jean Shaw! Brushless mowers are indeed a great choice for efficiency and power. I’m glad you found the information helpful in making your decision. Enjoy your quiet mowing sessions!