10 Best Cordless Angle Grinder 2026 in the United States

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 2680-21P cordless angle grinder is a solid choice for users looking for a portable and powerful tool. It runs on an 18-volt lithium-ion battery, providing good cordless convenience and decent runtime. The 4-1/2 inch disc size is standard and versatile for cutting and grinding tasks. With a no-load speed of 8,500 RPM, it offers enough power for most light to medium jobs.

Weighing about 0.45 kg (or roughly 1 pound), it is relatively lightweight, helping reduce user fatigue during extended use. The grinder features a brushless 4-pole motor, which delivers more efficiency and longer tool life compared to brushed motors. Ergonomically, the paddle switch design is user-friendly and comfortable, allowing easy control from different angles. Safety is enhanced by L-shaped intake vents that protect internal parts from debris.

The kit comes complete with a battery and charger, making it ready to use out of the box. This grinder suits DIY enthusiasts and professionals who value portability, power, and ease of use in medium-duty grinding and cutting jobs.

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.