DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, vs RIDGID 18V BRUSHLESS Cordless 4-1/2 in. Paddle
Updated July 2026 — DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, leads on speed and price.
The DEWALT FLEXVOLT ADVANTAGE offers superior power and safety features, making it the better choice for demanding tasks, while the RIDGID is a budget-friendly option for lighter use.
Why DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, is better
Power
DEWALT delivers up to 54% more power with FLEXVOLT batteries.
Safety Features
DEWALT includes advanced safety features like Kickback Brake.
Battery Compatibility
DEWALT is compatible with all 20V MAX* and FLEXVOLT batteries.
Why RIDGID 18V BRUSHLESS Cordless 4-1/2 in. Paddle is better
Price
RIDGID is significantly cheaper at $67.49.
Weight
RIDGID is likely lighter due to simpler design.
Basic Use
RIDGID is suitable for lighter tasks without advanced features.
Overall score
Specifications
| Spec | DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, | RIDGID 18V BRUSHLESS Cordless 4-1/2 in. Paddle |
|---|---|---|
| Motor Type | Brushless | Brushless |
| Kickback Brake | Yes | No |
| E-CLUTCH | Yes | No |
| RPM | 9000 | N/A |
| Battery Compatibility | 20V MAX* & FLEXVOLT | N/A |
Dimension comparison
Overview of the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder
The DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder offers advanced features and superior power. Priced at $144.50, this grinder is designed to deliver up to 54% more power when paired with specific FLEXVOLT batteries. Its brushless motor ensures high efficiency, with a maximum output of 1,550 watts and a speed of up to 9,000 rpm. This tool is part of DEWALT’s PERFORM & PROTECT line, featuring a Kickback Brake and E-CLUTCH system for enhanced safety during use.
Overview of the RIDGID 18V BRUSHLESS Cordless Angle Grinder
The RIDGID 18V BRUSHLESS Cordless Angle Grinder comes at a significantly lower price of $67.49. While specific power metrics are not highlighted in the available information, RIDGID tools are known for their reliability and performance in various applications. The grinder features a paddle switch design for easy operation. However, it lacks the advanced safety features and power enhancements that come with the DEWALT model, which may impact its suitability for heavy-duty tasks.
Price Comparison
When comparing prices, the DEWALT FLEXVOLT ADVANTAGE is priced at $144.50, while the RIDGID angle grinder is priced at $67.49. This makes the RIDGID grinder about 53% cheaper than its DEWALT counterpart. However, this price difference could reflect the DEWALT's enhanced capabilities and advanced features, which may justify the higher cost for professionals requiring more power and safety features.
Power and Performance
The DEWALT angle grinder boasts a powerful brushless motor that delivers up to 1,550 watts and a speed of up to 9,000 rpm, making it ideal for demanding tasks. In contrast, the RIDGID's specifications on power output are not disclosed, which leaves a gap in understanding its performance relative to the DEWALT model. The DEWALT grinder also features a significant advantage with its ability to gain 54% more power when used with compatible FLEXVOLT batteries, ensuring it can handle more intensive applications.
Safety Features
Safety is a critical factor in power tool selection, and the DEWALT grinder excels in this area with its Kickback Brake and E-CLUTCH system. The Kickback Brake quickly stops the wheel and shuts off the grinder in case of a bind-up, while the E-CLUTCH system shuts down the motor almost instantaneously upon detecting pinch or stall. These features enhance user safety significantly. In contrast, the RIDGID angle grinder lacks specific safety feature descriptions, which may raise concerns for users planning to utilize the tool for heavier grinding tasks.
Battery Compatibility
The DEWALT FLEXVOLT ADVANTAGE is compatible with all DEWALT 20V MAX* and FLEXVOLT batteries, making it a versatile choice for users who may already own DEWALT tools. This compatibility ensures that users can maximize their investment in battery systems. The RIDGID angle grinder’s battery compatibility details are not provided, limiting its appeal for users who prioritize seamless integration with existing tools.
User Experience and Handling
The DEWALT grinder is designed with user comfort in mind, featuring a paddle switch for easy control. The additional safety features such as the E-Switch Protection provide peace of mind, requiring the trigger to be cycled after unexpected shutdowns. This may enhance the overall user experience, especially in demanding work environments. The RIDGID model also offers a paddle switch design, but without the advanced safety features, users might find themselves at a greater risk during operation.
Which should you buy?
Choosing between the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder and the RIDGID 18V BRUSHLESS Cordless Angle Grinder largely depends on your specific needs and budget. If you require high power, advanced safety features, and compatibility with existing DEWALT batteries, the DEWALT grinder is the superior option despite its higher price. However, for users on a tighter budget or those who need a tool for lighter tasks, the RIDGID grinder may suffice. Ultimately, the DEWALT model is better suited for professionals or serious DIYers looking for performance and safety, while the RIDGID model serves as a more economical choice for less demanding applications.

