DEWALT 20V MAX* Angle Grinder Tool Cordless Brushless, 4 1/ vs Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled
Updated July 2026 — DEWALT 20V MAX* Angle Grinder Tool Cordless Brushless, 4 1/ leads on price and power.
The DEWALT 20V MAX* outperforms the Ryobi R18AG-0 in safety, performance, and features, making it the better choice for serious users.
Why DEWALT 20V MAX* Angle Grinder Tool Cordless Brushless, 4 1/ is better
Performance
DEWALT has a brushless motor for longer life.
Safety
DEWALT features advanced safety mechanisms.
Brand Reputation
DEWALT has a higher sales rank.
Why Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled is better
Price
Ryobi is significantly cheaper.
Weight
Ryobi is lighter and easier to handle.
Simplicity
Ryobi is straightforward for casual users.
Overall score
Specifications
| Spec | DEWALT 20V MAX* Angle Grinder Tool Cordless Brushless, 4 1/ | Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled |
|---|---|---|
| Motor Type | Brushless | Brushed |
| Brake Time | 2 seconds | N/A |
| Kickback Brake | Yes | No |
| E-Switch Protection | Yes | No |
| Sales Rank | 1826 | 20989 |
Dimension comparison
Introduction to DEWALT and Ryobi Angle Grinders
When it comes to cordless angle grinders, the DEWALT 20V MAX* and Ryobi R18AG-0 are two notable options on the market. The DEWALT is priced at $249.00, while the Ryobi offers a much lower price point of $62.29, making it about 75% cheaper. However, price is not the only factor to consider when choosing between these two products. Their features, performance, and safety mechanisms also play a significant role in selecting the right tool for your needs.
Performance and Power
In terms of performance, the DEWALT 20V MAX* stands out with its brushless motor that requires no brush changes, ensuring longer motor life and consistent power delivery. This model also features a brake that stops the wheel in 2 seconds or less, providing increased safety and control during operation. In contrast, the Ryobi R18AG-0, while effective as a cordless angle grinder, does not specify any advanced motor technology or braking features. The DEWALT’s superior performance can be particularly beneficial for heavy-duty applications, making it ideal for professionals or serious DIYers.
Safety Features
Safety is a crucial consideration when using power tools, and here the DEWALT takes the lead. Its Kickback Brake engages maximum force to stop the wheel when a pinch, stall, or bind-up occurs, effectively reducing the risk of kickback and injury. Additionally, it features E-Switch Protection, which prevents the grinder from restarting unexpectedly after a power outage. The Ryobi R18AG-0 lacks detailed safety features, which may be a concern for users planning to use the tool extensively or in challenging conditions. Overall, the DEWALT’s safety mechanisms provide a significant advantage.
Design and Usability
The DEWALT 20V MAX* is designed with user comfort in mind, featuring a paddle switch that allows for easy operation, even in awkward positions. Its overall design is tailored for practical usage, ensuring that users can handle it with ease. On the other hand, the Ryobi R18AG-0 is a straightforward cordless angle grinder, but its usability features are less detailed. While both products are cordless and portable, the ergonomic design of the DEWALT may give it an edge for extended use, particularly for professionals.
Brand Reputation and Sales Rank
Brand reputation plays a significant role in consumer choice, and both DEWALT and Ryobi have strong followings in the power tool market. The DEWALT 20V MAX* holds a sales rank of 1826, indicating its popularity among users, while the Ryobi R18AG-0 has a sales rank of 20989, suggesting it is less favored. The higher sales rank of the DEWALT could be attributed to its advanced features and better performance, making it a trusted choice for serious users.
Price Comparison
At $249.00, the DEWALT 20V MAX* is significantly more expensive than the Ryobi R18AG-0, which retails for $62.29. This makes the Ryobi about 75% cheaper. However, it’s essential to consider what you’re getting for that higher price. The DEWALT offers advanced features such as a brushless motor, rapid braking, and enhanced safety, which may justify the cost for users who need a reliable tool for demanding tasks. Conversely, the Ryobi may appeal to casual users or those on a tight budget who require a basic angle grinder.
Target Audience
The target audiences for these two angle grinders differ significantly. The DEWALT 20V MAX* is aimed at professionals and serious DIY enthusiasts who require a durable and high-performing tool for various applications. Its features cater to users who prioritize safety and efficiency. On the other hand, the Ryobi R18AG-0 is likely better suited for occasional users or hobbyists who need a lightweight, budget-friendly option for lighter tasks. Understanding your intended use is crucial in determining which angle grinder is the right fit.
Which should you buy?
Ultimately, deciding between the DEWALT 20V MAX* and the Ryobi R18AG-0 depends on your specific needs and budget. If you prioritize safety, performance, and advanced features, the DEWALT, despite its higher price, is likely the better choice. However, if you're looking for a more affordable option for light work, the Ryobi could serve you well without breaking the bank. Consider your usage requirements and investment willingness to make the most informed decision.

