Greenworks 48V High - Performance Cordless Yard vs RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah
Updated July 2026 — Greenworks 48V High - Performance Cordless Yard leads on torque and runtime.
The Greenworks 48V is a powerful and versatile mower suitable for larger yards, while the RB 9" is a compact and budget-friendly option for small spaces.
Why Greenworks 48V High - Performance Cordless Yard is better
Power
Greenworks has a brushless motor with 2X more torque.
Features
Includes trimmer and blower in the combo.
Runtime
Longer runtime with multiple batteries.
Why RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah is better
Weight
RB is ultra-light at 11.5 lbs.
Storage
Compact design allows for upright storage.
Price
RB is significantly cheaper at $169.99.
Overall score
Specifications
| Spec | Greenworks 48V High - Performance Cordless Yard | RB 9" Small Lawn Mower for Small Spaces, 40V 2Ah |
|---|---|---|
| Motor Type | Brushless | Brushless |
| Self-Propelled | Yes | No |
| Safety Features | LED headlights | Auto-stop |
| Cutting Width | 21 inches | 9 inches |
| Price | $577.99 | $169.99 |
Dimension comparison
Overview of the Products
When comparing the Greenworks 48V and the RB 9" Small Lawn Mower, the most striking difference is their target audience and intended use. The Greenworks 48V is designed for larger yards, while the RB 9" is tailored for small spaces. Priced at $577.99, the Greenworks offers a robust set of features, including a powerful self-propelled mower and additional tools like a trimmer and blower. In contrast, the RB, costing only $169.99, provides a lightweight, ultra-compact solution perfect for smaller lawns up to 540 sq. ft.
Performance Comparison
The performance capabilities of the Greenworks 48V outshine those of the RB mower. The Greenworks features a brushless motor that provides up to 2X more torque than traditional models, making it capable of handling tougher mowing tasks, including inclines of up to 21°. Meanwhile, the RB's brushless motor operates at a maximum speed of 6000 RPM, which, while effective for its intended small spaces, lacks the power for larger yard tasks. Hence, for homeowners with expansive lawns, the Greenworks 48V is the superior choice, whereas the RB is suited for those with limited outdoor space.
Design and Usability
In terms of design, the Greenworks 48V offers a user-friendly experience with multiple features such as a push-button start and a self-propelled function. It has a 21" steel deck and allows for vertical storage, saving 70% of space, which is ideal for homeowners with storage constraints. The RB, although compact and lightweight at just 11.5 lbs, is aimed at simplicity with one-hand steering and a detachable handle for easy storage. However, its smaller cutting width of 9" limits its efficiency compared to the Greenworks. Thus, while both products prioritize usability, the Greenworks is better suited for varied lawn tasks.
Battery Life and Charging
Battery life is critical when considering cordless lawn mowers. The Greenworks 48V comes with multiple batteries, including two 5.0Ah batteries, allowing for a run time of up to 35 minutes on full charge. This extended battery life supports its ability to tackle larger areas. In contrast, the RB's 40V 2Ah battery is designed for shorter mowing sessions, ideal for small lawns but may fall short for extended use. When it comes to charging, both brands offer convenience, but the Greenworks delivers a longer runtime, making it more reliable for those with larger yards.
Safety Features
Safety is paramount in lawn equipment, and both the Greenworks and RB models incorporate essential safety features. The Greenworks includes LED headlights for visibility during low-light conditions and is designed for operation across various terrains. The RB, on the other hand, has an advanced safety design that automatically stops the motor if tilted beyond a certain angle, meeting US safety standards. While both products prioritize user safety, the Greenworks offers additional features that make it versatile for different mowing conditions.
Target Audience
The ideal target audience for each mower is distinct. The Greenworks 48V is perfect for homeowners with larger lawns who require a powerful, efficient, and versatile tool. Its additional features cater to those who may need to manage various yard tasks, including trimming and blowing leaves. Conversely, the RB is designed for renters or homeowners with small yards, making it an excellent choice for beginners or those prioritizing ease of use. The pricing reflects this distinction, with the Greenworks being about 239% more expensive than the RB, which aligns with its broader capabilities.
Customer Feedback
Customer feedback also plays a vital role in assessing these products. The Greenworks 48V has a sales rank of 8773, indicating a good level of customer interest and satisfaction in the larger mower segment. Meanwhile, the RB holds a sales rank of 20912, suggesting it appeals primarily to a niche market focused on compact and lightweight lawn care solutions. While both products have their loyal customer bases, the Greenworks may offer more robust feedback regarding performance and durability, especially for more extensive mowing tasks.
Which should you buy?
Ultimately, the decision between the Greenworks 48V and the RB 9" Small Lawn Mower hinges on your specific needs and yard size. If you have a larger yard that requires a powerful mower capable of handling various conditions and additional tasks, the Greenworks 48V is the clear choice despite its higher price point of $577.99. However, if your lawn is small and you seek a budget-friendly, lightweight option, the RB at $169.99 provides excellent value for those with limited outdoor space. Each product excels in its category, making them both worthy considerations depending on your mowing requirements.

