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MZK 20V 13" Electric Lawn Mower, Brushless vs RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah

Updated July 2026 — MZK 20V 13" Electric Lawn Mower, Brushless wins on runtime and weight, RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah wins on sales rank.

The MZK 20V 13" Electric Lawn Mower is a more powerful and efficient choice for medium-sized lawns, while the RB 9" Small Lawn Mower excels in compactness and maneuverability for small spaces.

Why MZK 20V 13" Electric Lawn Mower, Brushless is better

Cutting Width

MZK has a 13-inch cutting path compared to RB's 9-inch.

Battery Life

MZK includes two 4.0Ah batteries for extended runtime.

Sales Rank

MZK has a higher sales rank indicating better popularity.

Why RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah is better

Weight

RB is significantly lighter at 11.5 pounds.

Storage

RB features a space-saving design for easy storage.

Maneuverability

RB's one-hand steering makes it easier to navigate tight spaces.

Overall score

MZK 20V 13" Electric Lawn Mower, Brushless
85
RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah
75

Specifications

SpecMZK 20V 13" Electric Lawn Mower, BrushlessRB 9" Small Lawn Mower for Small Spaces, 40V 2Ah
PowerBrushlessBrushless
Safety FeaturesTwo-step startAuto stop
Grass Bag8 GallonNot specified
ManeuverabilityGoodExcellent
Price$149.99$169.99

Dimension comparison

MZK 20V 13" Electric Lawn Mower, BrushlessRB 9" Small Lawn Mower for Small Spaces, 40V 2Ah

Introduction to the MZK 20V 13" Electric Lawn Mower and RB 9" Small Lawn Mower

When considering the right lawn mower for your needs, the MZK 20V 13" Electric Lawn Mower and the RB 9" Small Lawn Mower are two compelling options. Each mower is designed for different lawn care requirements, catering to varying yard sizes and user preferences. The MZK retails for $149.99, while the RB comes in at $169.99, making the MZK about 12% cheaper. Understanding their features can help you make an informed decision.

Power and Efficiency

The MZK 20V Electric Lawn Mower is equipped with a powerful brushless motor that enhances efficiency and reduces maintenance. It operates with two 4.0Ah batteries, providing extended runtime for larger mowing tasks. In contrast, the RB 9" Small Lawn Mower features a 6000RPM brushless motor powered by a 40V 2Ah battery. While the RB is designed for small spaces, it is effective for lawns up to 540 square feet, highlighting its focus on efficiency in compact areas. Thus, for larger lawns, the MZK offers superior power, while the RB excels in smaller settings.

Cutting Width and Height Options

When it comes to cutting capabilities, the MZK features a 13-inch cutting path, allowing for efficient coverage of medium-sized lawns. It also offers four adjustable cutting heights ranging from 1.2 to 1.5 inches, enabling users to customize their mowing experience. The RB, however, has a smaller 9-inch cutting width and provides three cutting heights from 1.2 to 2 inches. This means that while the RB can handle various grass types, it may require more passes on larger lawns due to its narrower cutting path.

Weight and Maneuverability

The MZK weighs in at 24.3 pounds, making it relatively lightweight for a mower of its size, allowing for easy maneuverability. However, the RB takes maneuverability to another level with a weight of just 11.5 pounds (without the battery), making it incredibly easy to handle, especially in tight corners and small spaces. If you value agility and ease of use in confined areas, the RB is clearly the better choice, while the MZK strikes a balance between manageability and cutting power.

Battery Life and Runtime

Battery performance is critical for cordless lawn mowers. The MZK comes with two 4.0Ah batteries, ensuring a longer runtime, which is essential for larger mowing jobs. The RB, on the other hand, utilizes a 40V 2Ah battery, making it suitable for small lawns but possibly limiting in runtime for larger areas. The dual battery system of the MZK not only extends mowing time but also reduces the need for frequent recharging, making it a more practical option for extensive yard work.

Safety Features

Safety is paramount when it comes to lawn mowers. The MZK features an intuitive two-step activation process that prevents accidental starts, enhancing user safety. The RB also incorporates advanced safety features, including an automatic stop if tilted beyond a certain angle, adhering to US safety standards. While both mowers prioritize user safety, the MZK’s two-step activation may appeal to those looking for a straightforward start-up process.

Storage and Portability

Storage capabilities differ significantly between the two models. The MZK does not specifically mention storage features, while the RB boasts a space-saving design with a detachable aluminum handle and an upright storage option that saves up to 70% space. This compact design makes the RB an excellent choice for those with limited storage space, as it can fit into tight areas more conveniently than the MZK.

Customer Ratings and Popularity

Considering sales rank, the MZK is ranked at 3019, while the RB has a lower ranking at 20912. This suggests that the MZK is more popular among consumers, potentially due to its combination of power, efficiency, and versatility. A higher sales rank often indicates better customer satisfaction and a greater likelihood of purchase, making the MZK a strong contender in the lawn mower market.

Which should you buy?

Ultimately, the choice between the MZK 20V 13" Electric Lawn Mower and the RB 9" Small Lawn Mower hinges on your specific needs. If you have a medium-sized lawn and prioritize power and runtime, the MZK, priced at $149.99, is the better option. However, if you are dealing with a small yard and prefer a lightweight, compact mower, the RB at $169.99 may be the ideal fit. Each mower offers unique advantages, ensuring that there is a suitable option for different mowing requirements.