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DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder vs FULLYEA Cordless Angle Grinder 4-1/

Updated July 2026 — DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder wins on price, FULLYEA Cordless Angle Grinder 4-1/ wins on sales rank and rpm.

The DEWALT DCG412B offers superior performance and brand reliability, while the FULLYEA provides excellent value at a lower price.

Why DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder is better

Performance

Higher RPM motor at 8000 RPM

Brand Reputation

Established brand with strong warranty

Features

Tool-free wheel release and guard adjustments

Why FULLYEA Cordless Angle Grinder 4-1/ is better

Price

Significantly cheaper at $46.99

Battery

Includes two 4.0Ah batteries

Speed Options

3-speed adjustment for versatility

Overall score

DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder
85
FULLYEA Cordless Angle Grinder 4-1/
70

Specifications

SpecDEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” GrinderFULLYEA Cordless Angle Grinder 4-1/
Motor TypeBrushedBrushless
Speed Settings13
Included BatteryNoYes
Trigger Type2-FingerStandard
Guard AdjustmentTool-FreeManual

Dimension comparison

DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” GrinderFULLYEA Cordless Angle Grinder 4-1/

Overview

When it comes to cordless angle grinders, the DEWALT DCG412B and the FULLYEA Cordless Angle Grinder stand out with their unique features and capabilities. The DEWALT grinder is priced at $127.99, while the FULLYEA offers a more budget-friendly option at $46.99, making it about 63% cheaper. This price difference sets the stage for a closer examination of their performance, features, and overall value.

Performance

The performance of an angle grinder is crucial for effective cutting and grinding tasks. The DEWALT DCG412B is equipped with an 8,000 rpm motor, providing ample power for a variety of applications. In contrast, the FULLYEA grinder boasts a more powerful brushless motor with a no-load speed of up to 12,000 RPM, which means it can handle tougher jobs with greater efficiency. The ability to reach higher RPMs makes the FULLYEA a compelling choice for users who require faster operation.

Features

Both grinders come packed with features that enhance usability and convenience. The DEWALT DCG412B includes a Quick-Change Wheel Release for tool-free wheel removal and a tool-free guard for easy adjustments. Additionally, it has a 2-finger trigger switch with a lock-off button for safe operation. On the other hand, the FULLYEA grinder offers a 3-speed adjustment feature, allowing users to select speeds of 0-6000, 9000, or 12000 RPM, catering to various tasks. While both models provide user-friendly features, the FULLYEA’s adjustable speeds may provide an edge for specific applications.

Design

Design plays a vital role in the user experience of power tools. The DEWALT DCG412B features a 2-position side handle, enhancing control and comfort during use. It is designed for easy gripping, which is essential for extended tasks. The FULLYEA grinder, however, boasts an ergonomic design with dual non-slip auxiliary handles and a rotating safety guard to protect users from debris. This thoughtful design can lead to increased stability and safety, making the FULLYEA a strong contender in this category.

Battery and Runtime

Battery performance is critical for cordless tools, and both grinders come with their own advantages. The DEWALT DCG412B does not come with a battery included, which may require an additional investment for users who don’t already own compatible batteries. In contrast, the FULLYEA grinder includes two 4.0Ah batteries, allowing for extended run times and minimizing downtime. This feature makes the FULLYEA particularly appealing for users looking to maximize productivity without worrying about battery life.

Price

Price is a significant factor in deciding between these two grinders. The DEWALT DCG412B is priced at $127.99, while the FULLYEA is available for just $46.99, which is a substantial saving of about $81.00. The significant price gap raises questions about the value offered by each product. While the DEWALT brand is often associated with professional-grade tools, the FULLYEA grinder provides excellent performance at a fraction of the cost, appealing to budget-conscious consumers.

Sales Rank

Sales rank can provide insights into a product’s popularity and user satisfaction. The DEWALT DCG412B holds a sales rank of 10,196, indicating a strong performance in the market. In comparison, the FULLYEA grinder has a sales rank of 58,729, suggesting it is less popular among consumers. While sales rank should not be the sole factor in decision-making, it can reflect user experiences and perceived quality.

Warranty and Support

Warranty and customer support are essential considerations when purchasing power tools. The DEWALT brand is known for its robust warranty policies and customer service, which can provide peace of mind for buyers. Although the FULLYEA product mentions after-sales service, details on warranty policies are less clear. For users prioritizing long-term support, the established reputation of DEWALT may tip the scales in its favor.

Which should you buy?

Choosing between the DEWALT DCG412B and the FULLYEA Cordless Angle Grinder ultimately depends on your specific needs and budget. If you are looking for a reliable, well-regarded brand and don’t mind paying more, the DEWALT grinder offers powerful performance and robust features. However, if you are budget-conscious and require a versatile tool that performs well for a variety of tasks, the FULLYEA grinder provides exceptional value without compromising on capability.