DEWALT 20V MAX* XR Brushless Cordless 4-1/2 in. - vs RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder
Updated July 2026 — DEWALT 20V MAX* XR Brushless Cordless 4-1/2 in. - leads on price and power.
The DEWALT grinder offers advanced features and superior performance, while the RYOBI grinder provides excellent value for budget-conscious users.
Why DEWALT 20V MAX* XR Brushless Cordless 4-1/2 in. - is better
Performance
DEWALT has a brushless motor for better efficiency.
Features
DEWALT includes variable speed functionality.
Safety
DEWALT has an anti-rotation system for enhanced safety.
Why RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder is better
Price
RYOBI is significantly cheaper.
Weight
RYOBI is lighter and easier to handle.
Compatibility
RYOBI offers a wider range of compatible tools.
Overall score
Specifications
| Spec | DEWALT 20V MAX* XR Brushless Cordless 4-1/2 in. - | RYOBI PCL445B ONE+ 18V Cordless 4-1/2 in. Angle Grinder |
|---|---|---|
| Motor Type | Brushless | Brushed |
| RPM | 9000 | 9000 |
| Handle | Variable Speed | 3-Position |
| Safety Features | Anti-Rotation | None |
| Battery System | 20V MAX* | ONE+ 18V |
Dimension comparison
Overview of the DEWALT and RYOBI Angle Grinders
The DEWALT 20V MAX* XR Brushless Cordless Grinder is priced at $221.71, while the RYOBI PCL445B ONE+ 18V Cordless Grinder is significantly cheaper at $54.00, making it about 75% less expensive. Both products are designed for heavy-duty grinding tasks, but they cater to different user needs and budgets. This comparison will delve into the features, performance, and overall value of each tool.
Power and Performance
The DEWALT grinder boasts a brushless motor that delivers up to 1,640 MWO and a no-load speed of 9,000 RPM, making it capable of handling tough jobs with ease. In contrast, the RYOBI model also features a powerful motor that reaches 9,000 RPM, but it lacks the brushless technology found in DEWALT's offering. While both tools can effectively perform rapid material removal, the DEWALT's advanced motor technology may provide greater efficiency and longevity.
Control and Usability
When it comes to user control, the DEWALT grinder features variable speed functionality, allowing users to adjust wheel speed to match the material being worked on. This is particularly beneficial for a variety of applications, providing enhanced versatility. On the other hand, the RYOBI grinder includes a 3-position side handle for maximum control, ensuring that users can maintain stability during operation. While both grinders offer control features, the DEWALT's variable speed may provide a more tailored grinding experience.
Safety Features
Safety is a critical aspect of power tool design, and both grinders come equipped with features aimed at protecting the user. The DEWALT model includes an anti-rotation system that senses excessive rotational motion and shuts the tool down, preventing potential accidents. RYOBI's offering, while lacking this specific feature, does have a die-cast metal gear case for added durability, which can contribute to the overall safety and longevity of the tool. Both tools prioritize safety but approach it in different ways.
Build Quality and Durability
The build quality of an angle grinder can significantly impact its performance and lifespan. The DEWALT grinder is part of a line known for its powerful performance, suggesting a robust design meant for demanding tasks. In comparison, the RYOBI grinder features a die-cast metal gear case, which enhances its durability. While both tools are designed to withstand rigorous use, the DEWALT's reputation for performance may suggest a higher level of overall durability.
Battery Compatibility and Convenience
Both tools are sold as bare units, meaning that batteries and chargers are sold separately. The DEWALT grinder is compatible with its 20V MAX* battery line, while the RYOBI grinder works with the ONE+ 18V battery system. The advantage of the RYOBI model lies in the extensive range of tools available within the ONE+ system, providing users with more options for battery sharing. However, the DEWALT tool's integration with the TOOL CONNECT site manager app offers unique asset management capabilities that may appeal to professional users.
Price Comparison
The DEWALT grinder is priced at $221.71, while the RYOBI model is available for just $54.00. This price difference of approximately $167.71 highlights a significant gap between the two products. The DEWALT grinder's advanced features and robust performance justify its higher cost, but for those on a tighter budget or those who need a more straightforward tool for lighter tasks, the RYOBI offers excellent value for money.
Market Perception
Both grinders have a solid presence in the market, with DEWALT holding a sales rank of 19,912 and RYOBI slightly better at 18,870. This indicates that both tools are well-received, but RYOBI might attract more attention among budget-conscious consumers. The overall market perception suggests that DEWALT is viewed as a premium option, while RYOBI is considered a reliable choice for everyday users seeking affordability without sacrificing quality.
Which should you buy?
Ultimately, the choice between the DEWALT 20V MAX* XR Brushless Grinder and the RYOBI PCL445B ONE+ 18V Cordless Grinder depends on individual needs and budget. If you prioritize advanced features, robust performance, and are willing to invest more, the DEWALT model is an excellent choice. Conversely, if you're looking for a reliable, budget-friendly option for lighter tasks, the RYOBI grinder provides substantial value at a significantly lower price.

