What is a Brushless Lawn Mower?

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Last updatedLast updated: March 12, 2021
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In the past, most of the lawn mowers produced by manufacturers ran on gas. Although many people still use gas-powered lawn mowers, the environmental impact of these machines has made more people think about getting alternatively powered mowers. If you are environmentally conscious or you live somewhere quiet and don’t want to disturb your neighbors, then a brushless lawn mower is just right for you. In this review, we consider the answer to the question, what is a brushless lawn mower?

Right out of the box, these are hugely preferred by professional gardeners or people that have small lawns. Apart from the reduced level of noise, these brushless lawn mowers are also excellent because of their durability and longevity. Read on to find out how these machines work, their benefits, drawbacks, and any other information that you might need to know about.

How does a brushless motor work?

What is a Brushless Lawn Mower?To know what this machine is and any benefits it might have, it is important to know how it works. In the simplest terms, this is a regular mower that is powered by a brushless motor. The motor is unique as it automatically adjusts to provide the exact power required for the work at hand. In a later section of this article, we will consider the biggest advantages of this machine.

So, how does it work?

Well, the brushless battery of the brushless lawn mower, as the name implies, does not have the brushes and the commutator found in the regular lawn mower. Another difference is that the positions of the winding and the magnets are changed.

Another thing that identifies this type of mower is that the fixed battery shaft does plenty of the work. Instead of using brushes and the commutator, this machine uses a circuit board to carry out the functions of these parts.

Therefore, it is this board and controller that controls the battery and the amount of power that it releases. It is for this reason that some consider the brushless lawn mower to be a smart or intelligent machine.

Benefits of brushless lawn mowers

What is a Brushless Lawn Mower?Now that we have considered what this machine is, we know will consider what makes this special and better than some of the other lawn mowers on the market.

  • The first benefit of brushless lawn mowers is the power. They are very powerful machines that help you to mow large areas in a short time.
  • If you do not fancy frequent maintenance, then you will love the brushless lawn mower. This machine needs a reduced amount of maintenance. You can use it for a while without having to check the motors. Also, the parts are quite durable. Since they don’t use brushes, you don’t have to frequently swap out the brushes.
  • Once you have the best batteries, you can carry out your work on a large piece of land. With powerful batteries, you can clear up to one acre without needing to recharge or change batteries. Since there are no brushes in the motor, there is minimal friction between the rotor and the stator. Therefore, you get efficient performance.
  • Another major benefit of these machines is the noise level. In our introduction, we highlighted that one of the reasons why you might prefer this machine is the noise level. Well, these machines are quiet and are the mower of choice if you live in a quiet neighborhood. Since they are so quiet, you can use them at any time of the day without waking up the neighbors.
  • Overheating is a big problem with regular lawn mowers. Thankfully, you don’t have to worry about that with the brushless lawn mower. These machines are very adverse to overheating. One big reason for their cool performance despite prolonged use is the absence of brushes that cause friction in the motor.
  • Perhaps this last benefit is the best one – the brushless motor can adjust its power output based on the work at hand. This means that it will not spend the same energy on low grass as it would on taller or tougher grasses. You can only imagine the energy that it saves. A consideration of the most popular brushless lawn mowers revealed that the iON16LM from Sun Joe is the most recommended cordless brushless lawn mowers on the market due to its ability to adjust power output.

Drawbacks of brushless lawn mowers

As with almost all products on the market, brushless lawn mowers also come with their drawbacks. This section covers some of the drawbacks that might make you reconsider whether to buy a brushless lawn mower or not.

  • One of the biggest disadvantages of these machines is that they are more expensive than their brushed counterparts. This is exacerbated by the electronic controller that is included in these machines.
  • With brushless motors, the mechanism is rather complicated. Therefore, if there is a fault, you likely will not be able to solve the problem with the tools that you have. You will have to call a professional for help, which might incur more costs.
  • Another issue that arises from using these appliances is that vibrations occur as it rotates- even at low speeds. Strangely, the faster the machine moves, the lower the vibration that occurs. Since some are self-propelled, you might not have plenty of worries.

These are the two main issues that arise from using a brushless lawn mower. If you aren’t bothered by them, then the brushless lawn mower is certainly a good option to buy.

Brushed vs. brushless lawn mowers

What is a Brushless Lawn Mower?The very names of these two types of lawn mowers indicate the main difference between them.

Brushed lawn mowers, as the name implies, are machines that have brushes in the motor or in the batteries. These brushes serve an important role because it is what charges the commutator. It is this commutator that provides the power that runs the rotor.

Here are some of the advantages of these machines:

  • Cheap to purchase
  • They can be rebuilt
  • The battery works even in extreme weather

Disadvantages of these machines include:

  • They create plenty of noise during operation
  • The battery gets hot, which increases the chances of overheating
  • Requires frequent maintenance.

With this in mind, which is better between the brushless and the brushed lawn mower? Let’s see.


What is a Brushless Lawn Mower?When it comes to efficiency, brushless lawn mowers offer a greater level of efficiency. It has been observed that these machines can reach efficiency levels of up to 90%. On the other hand, the maximum efficiency we have observed in a brushed lawn mower is 80%.

Therefore, a brushed lawn mower uses more power from the engine and more energy is produced as heat. There are some robotic models that offer even higher levels of efficiency. Many reviewers have mentioned the L350i Elite as one of the best robotic brushless motors on the market right now.


Performance is an important consideration, and this is somewhere brushless options are excellent. Since these don’t have brushes, there is less friction in the motor and other parts, which in turn translates into better performance.


Another difference between the two types of lawn mowers is the maintenance. Well, as we have pointed out, brushless lawn mowers require less maintenance than the brushed option. The brushed motors usually need you to change any worn brushes. You don’t have that issue with the brushless motor.


1.   Why are brushless lawn mowers more expensive?

When you compare the cost of the brushed lawn mower with that of the brushless models, brushless models are more expensive. There are major reasons for this. For one, the brushed motor is relatively simple and easy to build, with the materials required cheap. However, brushless motors use a circuit board as replacements for the commutator and the brushes. These boards are costly, and that extends to the overall cost of the brushless lawn mower.

2.   How long will brushless motor last?

An advantage of brushless motors is that they last for longer. Although they come with similar warranties, these machines last longer than their brushed siblings. They offer higher power generation. Brushed models can work for up to 3000 hours before packing up. On the other hand, brushless motors can last for more than 10,000 hours.

3.   Are brushless lawn mowers worth the cost?

Yes, they are! These machines have more power than brushed options. Since the copper windings are on the border of the motor shape, there is space to make them bigger. They also do not have problems with friction and drops in voltage. Because of these features, they will last for a longer time and give you better performance.

Final thoughts

We believe that you have found the answer to the question of what is a brushless lawn mower. After consideration of the features, it is clear that these are highly efficient and durable machines that are enjoyable to use. They have lower maintenance costs and offer more power. They produce a lower level of noise and heat, which impacts longevity.

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