10 Best Cordless Angle Grinder 2026 in the United States

The Milwaukee M18 FUEL 18-Volt Brushless Cordless Angle Grinder is a strong contender in the cordless grinder category, particularly for those who prioritize portability and performance. With a robust 18-volt battery system, it delivers the equivalent power of a traditional corded grinder, generating about 11 amps of corded power. This makes it suitable for tackling demanding jobs, especially in tight spaces, thanks to its low profile, flathead design. Users will appreciate its RAPIDSTOP Brake, which halts the grinding wheel in under two seconds for added safety, a critical feature in any power tool. At just 1.2 pounds, this grinder is remarkably lightweight, enhancing user comfort during extended use. Its ergonomic design and easy-to-use paddle switch further contribute to a pleasant user experience.

However, there are a few areas to consider. Since this is a tool-only package, users will need to purchase the battery separately, which could be an added expense. The 5-inch disc size is standard, but some users might find it limiting compared to larger models for more extensive projects. While the no-load speed of 8500 RPM is decent for most tasks, more demanding applications might require a grinder with higher RPM capabilities.

This grinder is an excellent choice for DIY enthusiasts and professionals who need a reliable, easy-to-handle tool that excels in tight spaces. As long as you’re prepared to invest in a compatible battery, the Milwaukee M18 FUEL delivers strong performance and safety features that make it a solid addition to any tool collection.

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.