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DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, vs Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled

Updated July 2026 — DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, wins on safety and power, Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled wins on price and weight.

The DEWALT FLEXVOLT ADVANTAGE offers superior power and advanced features, making it the better choice for demanding tasks, while the Ryobi is a budget-friendly option for lighter use.

Why DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, is better

Power

DEWALT delivers 54% more power with FLEXVOLT batteries.

Safety Features

DEWALT includes advanced safety features like Kickback Brake and E-CLUTCH.

Performance

DEWALT's motor achieves up to 9,000 rpm for efficient operation.

Why Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled is better

Price

Ryobi is significantly cheaper at $62.29.

Weight

Ryobi is lighter, making it easier to handle for casual users.

Simplicity

Ryobi offers a straightforward design for basic tasks.

Overall score

DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder,
85
Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled
65

Specifications

SpecDEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder,Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled
BrandDEWALTRYOBI
Price$144.50$62.29
Max RPM9000N/A
Battery TypeFLEXVOLTONE+
Sales Rank1475520989

Dimension comparison

DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder,Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder Angled

Brand Overview

When choosing between the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder and the Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder, brand reputation plays a significant role. DEWALT is known for its high-performance tools and innovative technology, while Ryobi is recognized for offering budget-friendly solutions without compromising on quality.

DEWALT's angle grinder is priced at $144.50, which reflects its position as a premium tool in the market, while Ryobi's model is considerably cheaper at $62.29, making it about 57% less expensive. This price difference illustrates how Ryobi caters to users seeking a cost-effective option, while DEWALT targets professionals looking for advanced features and durability.

Power and Performance

The DEWALT FLEXVOLT ADVANTAGE angle grinder boasts significantly higher power output compared to the Ryobi model. DEWALT claims its grinder can deliver 54% more power when paired with FLEXVOLT batteries, resulting in a robust performance ideal for heavy-duty tasks. In contrast, Ryobi's product does not provide specific power metrics, indicating it may be better suited for lighter applications.

With DEWALT's brushless motor achieving up to 9,000 rpm, it clearly stands out in terms of operational speed and efficiency. This performance advantage makes the DEWALT angle grinder a better choice for users who require intense grinding, cutting, or polishing tasks, while the Ryobi model may suffice for lighter, occasional use.

Features and Technology

When it comes to advanced features, the DEWALT angle grinder is packed with technology designed for safety and efficiency. It includes a Kickback Brake that immediately stops the wheel in the event of a bind-up, and an E-CLUTCH system that detects pinch or stall conditions to shut down the motor in less than a tenth of a second.

Additionally, the DEWALT model has E-Switch Protection, which requires reactivation after a power outage. This combination of features enhances user safety and tool longevity. On the other hand, the Ryobi grinder, while functional, lacks these advanced safety features, making it less suitable for users who prioritize safety and high performance in demanding environments.

Battery Compatibility

Battery compatibility is another crucial factor when comparing these two angle grinders. The DEWALT angle grinder is compatible with all DEWALT 20V MAX* and FLEXVOLT batteries, providing users with flexibility and the ability to leverage existing battery packs for extended run times. This is especially beneficial for professionals who already own DEWALT tools.

Conversely, Ryobi's model is part of the ONE+ system, which means it can use any Ryobi ONE+ battery. While this is convenient for users within the Ryobi ecosystem, it does not offer the same power enhancement potential as the DEWALT when using FLEXVOLT batteries. Users should consider their existing battery systems when deciding which grinder to purchase.

Design and Ergonomics

In terms of design, the DEWALT FLEXVOLT grinder features a paddle switch, which is often preferred for better control during operation. The ergonomic design is aimed at reducing user fatigue during extended use. The Ryobi grinder, while also designed with user comfort in mind, does not provide specific ergonomic features that compare to those of the DEWALT model.

The choice of design can significantly affect user experience, particularly for professionals who spend long hours using power tools. DEWALT's emphasis on ergonomics and user comfort may appeal more to individuals seeking a tool that can withstand continuous use without causing strain.

Price Comparison

Price is a significant differentiator between these two models. The DEWALT FLEXVOLT ADVANTAGE grinder is priced at $144.50, which reflects its higher performance and advanced features. In contrast, the Ryobi grinder comes in at $62.29, making it an attractive option for those on a tighter budget.

This price difference of approximately $82.21 highlights the investment required for the DEWALT model but also emphasizes the value it offers in terms of power and safety features. Users must evaluate their needs against their budget to determine which price point aligns with their usage requirements.

Customer Reception

Customer reception plays a vital role in understanding the market performance of these two grinders. The DEWALT model has a sales rank of 14,755, indicating a solid position in the market, particularly among professionals who appreciate its advanced features. The Ryobi grinder, with a sales rank of 20,989, suggests it is popular among DIY enthusiasts and casual users who prioritize affordability.

While both products have found their niche, the DEWALT angle grinder is likely favored by those who require reliability and performance in demanding tasks, whereas the Ryobi model appeals to users looking for a more economical solution.

Which should you buy?

Deciding between the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder and the Ryobi 5133001903 R18AG-0 One+ Cordless Angle Grinder ultimately depends on your specific needs and budget. If you prioritize power, advanced safety features, and are willing to invest more, the DEWALT model is the clear choice. However, if you're looking for a budget-friendly option for lighter tasks, the Ryobi grinder may be more suitable. Consider your existing battery systems, usage frequency, and safety requirements to make the best decision for your projects.