DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, vs FULLYEA Cordless Angle Grinder 4-1/2", Brushless
Updated July 2026 — DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, wins on brand and features, FULLYEA Cordless Angle Grinder 4-1/2", Brushless wins on price.
The DEWALT FLEXVOLT ADVANTAGE offers superior power and advanced features, making it ideal for professionals, while the FULLYEA is a budget-friendly option for casual users.
Why DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, is better
Power
DEWALT delivers 1,550 watts vs FULLYEA's unspecified output.
Features
DEWALT includes advanced safety features like Kickback Brake.
Brand
DEWALT is a well-established brand favored by professionals.
Why FULLYEA Cordless Angle Grinder 4-1/2", Brushless is better
Price
FULLYEA is significantly cheaper at $49.99.
Included Batteries
FULLYEA comes with two 4.0Ah batteries included.
Portability
FULLYEA's cordless design offers greater freedom of movement.
Overall score
Specifications
| Spec | DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, | FULLYEA Cordless Angle Grinder 4-1/2", Brushless |
|---|---|---|
| Max RPM | 9000 | 12000 |
| Motor Type | Brushless | Brushless |
| Included Batteries | No | 2 x 4.0Ah |
| Weight | 7.5 lbs | 5.5 lbs |
| Safety Features | Yes | No |
Dimension comparison
Overview of the Angle Grinders
When comparing the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder and the FULLYEA Cordless Angle Grinder, it's clear that they cater to different needs and preferences. The DEWALT model is designed for heavy-duty tasks, while the FULLYEA offers a more budget-friendly option with essential features.
The DEWALT is priced at $144.50, significantly higher than the FULLYEA, which retails for only $49.99. This difference reflects the DEWALT's advanced technology and power capabilities, making it a preferred choice for professionals. The FULLYEA, on the other hand, is more suited for casual users or those on a budget, providing a solid entry-level option.
Power and Performance
In terms of power, the DEWALT FLEXVOLT ADVANTAGE delivers a maximum output of 1,550 watts and can reach up to 9,000 RPM. This is ideal for demanding tasks that require high performance, especially when paired with a FLEXVOLT battery, which boosts power by up to 54%.
Conversely, the FULLYEA features a brushless motor that allows it to reach a maximum speed of 12,000 RPM. While this is higher than DEWALT's max RPM, the overall power output isn't specified, making it hard to compare directly. The FULLYEA’s speed settings allow for versatility, with three adjustable speeds catering to different applications, but it may not match the sustained power output of the DEWALT during intensive tasks.
Battery and Runtime
The DEWALT FLEXVOLT Angle Grinder requires separate purchase of the battery, which can be a significant investment, especially if you opt for the FLEXVOLT batteries to maximize power. The lack of included batteries means a higher initial cost, but the capability to use existing DEWALT batteries could be an advantage for loyal users of the brand.
In contrast, the FULLYEA comes with two 4.0Ah batteries included in the package, providing immediate usability. This inclusion is a significant benefit for users who need a complete setup right out of the box. The batteries ensure longer operation times, making the FULLYEA more user-friendly without additional expenses upfront.
Features and Technology
The DEWALT is equipped with advanced features including a Kickback Brake and E-CLUTCH system, which enhance safety and control during operation. These features are particularly beneficial in preventing accidents during intense usage, ensuring the user’s safety. DEWALT also offers the Tool Connect Chip ready capability, which allows for easy asset management on job sites.
On the other hand, the FULLYEA offers practical features such as a spindle lock for easier disc changes and three-speed settings to accommodate various tasks. While it lacks the advanced safety technology present in the DEWALT, it still provides adequate functionality for general use. The FULLYEA's features are designed for convenience and ease of use, making it suitable for DIY enthusiasts or occasional users.
Design and Usability
The design of the DEWALT FLEXVOLT is built for durability and comfort, suitable for prolonged use in demanding environments. Its paddle switch design allows for better control and handling, especially beneficial when working on complex projects.
In contrast, the FULLYEA's cordless design offers unmatched portability, allowing users to work freely without being tethered to a power source. This feature makes it ideal for outdoor tasks or locations where power outlets are limited. However, the trade-off may be in the weight and heft of the DEWALT, which is constructed for industrial-grade tasks.
Price Comparison
The DEWALT FLEXVOLT ADVANTAGE is priced at $144.50, while the FULLYEA is significantly cheaper at $49.99. This pricing disparity is approximately a 67% difference in favor of the FULLYEA, making it an attractive option for budget-conscious buyers.
However, the higher price of the DEWALT can be justified by its enhanced features, safety mechanisms, and overall power performance. Users need to assess their requirements and determine if the additional investment in the DEWALT is worth the benefits it provides over the FULLYEA.
Brand Reputation and Reliability
DEWALT is a well-established brand known for its high-quality tools, often favored by professionals in various industries. Its products are recognized for durability and performance reliability, resulting in a bestseller rank of 14,755 for the FLEXVOLT model, indicating a robust market presence.
FULLYEA, while newer and less recognized, still offers reliable tools for everyday users with a sales rank of 50,124. Customers may find that while the FULLYEA is serviceable, it may not hold up under the same rigorous conditions as DEWALT products, particularly for professional applications.
Which should you buy?
Choosing between the DEWALT FLEXVOLT ADVANTAGE and the FULLYEA Cordless Angle Grinder ultimately depends on your specific needs and budget. If you are a professional or a frequent user requiring maximum power, advanced safety features, and brand reliability, the DEWALT is worth the investment at $144.50.
However, if you are a casual user or a DIY enthusiast looking for a budget-friendly option that still delivers decent performance, the FULLYEA at $49.99 provides excellent value with its included batteries and ease of use. Consider your usage frequency, project demands, and budget before making a decision.

