10 Best Cordless Angle Grinder 2025 in the United States

The Milwaukee 2880-20 M18 FUEL Cordless Angle Grinder is a solid choice for users looking for a powerful and portable tool for grinding tasks. With an 800-watt brushless motor, it offers a maximum no-load speed of 8,500 RPM, making it efficient and capable of handling a variety of materials. The grinder is compatible with all M18 batteries, allowing for flexibility, although you will need to purchase the battery separately if you don’t already own one.

One of its standout features is the electronic clutch, which helps protect against kickback, enhancing safety during use. Additionally, it includes overload protection to prolong the motor's lifespan. The anti-vibration side handle contributes to user comfort, making it easier to use for extended periods without causing strain.

In terms of ergonomics, this grinder weighs about 4.99 pounds, which is relatively light for a tool of this power, but some users might find it slightly heavier during prolonged use. The 5/8”-11 spindle allows for compatibility with common grinding accessories, making it versatile for different tasks. Potential buyers should keep in mind that this model is sold as a tool-only unit, meaning batteries and chargers are not included. This could be a drawback for those looking for an all-in-one package.

The Milwaukee M18 Fuel 4-1/2"/5" Grinder Paddle is a powerful cordless angle grinder designed to deliver performance comparable to corded models. It operates on an 18-volt lithium-ion battery platform, with disc size options of 4-1/2" and 5" that provide versatility for various cutting and grinding tasks, including metalwork and masonry. The tool generates the equivalent of 11 amps of corded power and can complete up to 135 cuts per charge, demonstrating strong efficiency. Its brushless motor technology enhances motor life and battery efficiency.

Weighing about 14 pounds, it is relatively heavy for a cordless grinder, which may impact comfort during prolonged use. However, the paddle-style switch and ergonomic design help ensure good handling and control, with paddle switches typically aiding in the prevention of accidental startups. The grinder is sold without batteries or a charger, so these must be purchased separately.

This grinder is well suited for users who need a robust cordless tool for tough jobs without the inconvenience of a cord, particularly if they already own Milwaukee M18 batteries. Its weight and price are factors to consider for casual users or those seeking lighter and more affordable options.

The Milwaukee M18 Fuel 4-1/2-6 Braking Grinder is a solid choice if you’re looking for a cordless angle grinder that balances power and portability. It runs on an 18-volt brushless motor, which means it’s more efficient and lasts longer compared to traditional brushed motors. The 4-1/2 inch and 6 inch disc sizes give you flexibility depending on the job, from small detailed work to larger cutting or grinding tasks. Its no-load speed reaches up to around 9,000 RPM, providing enough power for most metal or masonry applications.

Weighing about 6.5 pounds, it’s moderately heavy but still manageable for handheld use. The paddle switch design adds safety by reducing accidental starts, and the braking feature helps to stop the disc quickly when you release the trigger, enhancing user control. The tool-only packaging means you’ll need to buy the battery separately, which can add to the initial cost. Also, while it includes essential safety features, the ergonomics might feel a bit bulky for extended use, especially if you have smaller hands.

This grinder suits professionals or serious DIYers who want a reliable cordless tool with strong performance and safety in mind, although casual users might find it somewhat heavier and pricier compared to simpler models.