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AOBEN Cordless Angle Grinder 4-1/ vs DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder,

Updated July 2026 — AOBEN Cordless Angle Grinder 4-1/ wins on power and speed, DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder, wins on price and safety.

The AOBEN grinder is a budget-friendly option for basic tasks, while the DEWALT grinder offers superior power and safety features for professionals.

Why AOBEN Cordless Angle Grinder 4-1/ is better

Price

AOBEN is $79.99 compared to DEWALT's $144.50

Weight

AOBEN is lighter, making it easier to handle

Battery Packs

AOBEN includes two batteries for extended use

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

Power

DEWALT provides up to 54% more power with FLEXVOLT batteries

Safety Features

DEWALT includes advanced safety features like Kickback Brake

Brand Reputation

DEWALT is recognized for reliability and professional-grade tools

Overall score

AOBEN Cordless Angle Grinder 4-1/
75
DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder,
85

Specifications

SpecAOBEN Cordless Angle Grinder 4-1/DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder,
Motor TypeBrushlessBrushless
Max WattsN/A1550
RPM95009000
Batteries Included2x4.0AhNone
Kickback BrakeNoYes
E-CLUTCHNoYes

Dimension comparison

AOBEN Cordless Angle Grinder 4-1/DEWALT FLEXVOLT ADVANTAGE 20V MAX* Angle Grinder,

Overview of Each Grinder

The AOBEN Cordless Angle Grinder is priced at $79.99, making it about 45% cheaper than the DEWALT FLEXVOLT ADVANTAGE Angle Grinder, which costs $144.50. Both products cater to the same market of angle grinders but feature different technologies and power capabilities. AOBEN's model boasts a brushless motor and a cordless design, while DEWALT's product emphasizes compatibility with its FLEXVOLT batteries and advanced safety features.

Power and Performance

When it comes to power, the DEWALT FLEXVOLT ADVANTAGE provides up to 54% more power when paired with FLEXVOLT batteries, delivering 1,550 max watts and reaching speeds of up to 9,000 RPM. In contrast, the AOBEN model offers three adjustable speeds, with a maximum of 9,500 RPM. While AOBEN's top speed is slightly higher, the overall power output of DEWALT's model when paired with the appropriate battery is significantly greater, making it more suitable for demanding tasks.

Battery and Runtime

The AOBEN grinder comes with two 4.0Ah batteries, providing a long runtime for continuous use, which is an advantage for those who need to work without interruptions. On the other hand, the DEWALT grinder is designed to be compatible with all DEWALT 20V MAX and FLEXVOLT batteries, allowing users to benefit from the advanced power capabilities of the FLEXVOLT line. This flexibility might prove beneficial for existing DEWALT battery users looking to enhance their toolset without additional investment.

Safety Features

Safety is a crucial aspect of any power tool, and here both models offer unique features. The DEWALT grinder includes a Kickback Brake that engages forcefully to stop the wheel and shut off the grinder during a bind-up, along with E-CLUTCH technology that shuts down the motor in a fraction of a second if a pinch or stall is detected. Meanwhile, AOBEN features two wheel guards to protect users from flying chips and sparks, providing a basic level of safety but lacking the advanced protective systems found in DEWALT's model.

Ease of Use

The AOBEN grinder is designed for comfort and control, featuring an ergonomic design and a spindle lock that allows for quick wheel changes. It also includes an auxiliary handle for better handling during operations. Conversely, DEWALT's model integrates a Tool Connect Chip pocket which facilitates asset management on the job site, making it particularly useful for professionals who need to keep track of their tools. While both grinders are user-friendly, DEWALT's added tech may appeal more to commercial users.

Price and Value

At $79.99, the AOBEN grinder is an attractive option for budget-conscious buyers, making it a great entry-level tool for home projects. In contrast, the DEWALT grinder's price of $144.50 is reflective of its advanced features and higher power capabilities. For users who prioritize performance and safety, the additional investment in DEWALT may justify the cost, especially for intensive tasks or professional use.

Brand Reputation

Both AOBEN and DEWALT have established themselves in the power tool market, but DEWALT is often recognized for its reliability and professional-grade tools. The DEWALT FLEXVOLT ADVANTAGE model ranks 14,755 in bestseller status, indicating a solid market presence, while the AOBEN grinder holds a slightly lower sales rank at 15,649. This difference may reflect DEWALT's stronger reputation and trust among professionals and serious DIYers.

Which should you buy?

Choosing between the AOBEN Cordless Angle Grinder and the DEWALT FLEXVOLT ADVANTAGE ultimately depends on your specific needs. If you are looking for an economical option that covers basic grinding tasks and offers good battery life, the AOBEN grinder is a compelling choice at $79.99. However, if you require superior power, enhanced safety features, and the flexibility of compatibility with DEWALT's advanced battery systems, the DEWALT grinder at $144.50 is worth the investment. Ultimately, for professional use or demanding applications, DEWALT stands out; for casual users or those on a budget, AOBEN may be the better option.