DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, vs SEESII Cordless Angle Grinder 4-1/
Updated July 2026 — DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, wins on safety and power, SEESII Cordless Angle Grinder 4-1/ wins on accessories and price.
The DEWALT FLEXVOLT ADVANTAGE offers superior power and professional features, while the SEESII provides great value for casual users.
Why DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, is better
Power
DEWALT delivers 1,550 max watts compared to SEESII's lower performance.
Safety Features
DEWALT includes advanced safety systems like Kickback Brake and E-CLUTCH.
Brand Reputation
DEWALT is known for professional-grade tools.
Why SEESII Cordless Angle Grinder 4-1/ is better
Price
SEESII is significantly cheaper at $84.99.
Included Accessories
SEESII comes with two batteries and multiple wheels.
Weight
SEESII is lighter and easier to handle for casual users.
Overall score
Specifications
| Spec | DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, | SEESII Cordless Angle Grinder 4-1/ |
|---|---|---|
| Max Watts | 1550 | unknown |
| Max RPM | 9000 | 10000 |
| Battery Included | No | Yes |
| Brushless Motor | Yes | Yes |
| Speed Settings | N/A | 3 |
Dimension comparison
Overview of the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder
The DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder offers substantial power and advanced features tailored for demanding tasks. Priced at $144.50, this tool is designed for serious users who require efficiency and performance. With a sales rank of 14,755, it reflects a strong presence in the market, appealing to professionals and DIY enthusiasts alike.
The grinder utilizes FLEXVOLT technology, which allows it to deliver up to 54% more power when paired with the appropriate FLEXVOLT batteries. This capability makes it a versatile tool for various applications, including cutting and grinding. Additionally, its safety features like the Kickback Brake and E-CLUTCH provide added peace of mind during operation.
Introduction to the SEESII Cordless Angle Grinder
The SEESII Cordless Angle Grinder is another strong contender, priced at $84.99, making it about 17% cheaper than the DEWALT option. It holds a sales rank of 71,084, indicating a different target audience, likely more focused on casual or light-duty tasks.
Equipped with a high-efficiency brushless motor, the SEESII grinder operates quietly while enhancing durability and reducing energy consumption. The inclusion of two 4,000mAh batteries ensures users can work cordlessly without worrying about running out of power quickly. This grinder is particularly well-suited for home improvement projects and DIY tasks.
Power and Performance Comparison
When it comes to power, the DEWALT FLEXVOLT ADVANTAGE stands out with its brushless motor that delivers 1,550 max watts out and can achieve speeds up to 9,000 RPM. This performance is especially useful for heavy-duty applications that require significant cutting or grinding force.
In contrast, the SEESII grinder features a maximum speed of 10,000 RPM, which may appeal to users looking for faster operation for lighter materials. However, the DEWALT’s ability to provide more power when equipped with FLEXVOLT batteries offers a unique advantage for demanding tasks, making it ideal for professionals who need reliability under pressure.
Battery and Runtime
The DEWALT grinder operates with all DEWALT 20V MAX* and FLEXVOLT batteries, but the batteries are sold separately, making the initial investment higher. Users must consider the additional cost of batteries to fully utilize the tool's capabilities.
On the other hand, the SEESII grinder comes with two 4,000mAh batteries included in the package. This feature allows users to start working right away, eliminating the need for additional purchases. The convenience of having extra batteries can significantly enhance workflow, especially for those engaged in projects that require extended runtime.
Features and Usability
The DEWALT angle grinder is designed with user safety and efficiency in mind, boasting features like the Kickback Brake, which quickly stops the wheel during a bind-up, and the E-CLUTCH system that shuts down the motor when a pinch or stall is detected. These safety features can be indispensable in high-stakes environments.
Conversely, the SEESII grinder offers a user-friendly design with a 2-position auxiliary handle, enhancing control and comfort for various tasks. It also has three speed settings (5,000 RPM, 7,500 RPM, and 10,000 RPM), allowing users to adapt the tool to different applications easily. This flexibility is beneficial for users who engage in multiple types of projects, from cutting to polishing.
Versatility and Accessories
The DEWALT FLEXVOLT ADVANTAGE is compatible with a range of DEWALT accessories, making it a versatile tool in a professional's arsenal. However, it does not come with any additional accessories, meaning users will have to invest more to customize their setup.
In comparison, the SEESII grinder includes an impressive range of accessories in its package, including various wheels for cutting, grinding, and polishing. This comprehensive setup not only enhances the tool's versatility but also provides users with everything needed to tackle different jobs right out of the box, making it a great value for the price.
Customer Feedback and Market Position
With a sales rank of 14,755, the DEWALT FLEXVOLT ADVANTAGE is favored among users who prioritize professional-grade tools and performance. Its higher price point reflects its target market of serious professionals who require reliable and powerful equipment.
The SEESII grinder, with a sales rank of 71,084, appeals to a different demographic, likely attracting casual users and DIY enthusiasts who seek affordability and convenience. Its lower price and included accessories make it an attractive option for less demanding tasks, but it may not satisfy professionals looking for high performance.
Which should you buy?
Choosing between the DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder and the SEESII Cordless Angle Grinder ultimately depends on your specific needs and budget. If you require a powerful, professional-grade tool and are willing to invest in additional batteries and accessories, the DEWALT grinder is the superior choice with its advanced features and safety systems. However, if you are looking for a cost-effective, versatile grinder for home use, the SEESII offers great value with its included batteries and accessories, making it suitable for a variety of light to medium tasks.

