10 Best Cordless Grinder 2026 in the United States

The DEWALT 20V MAX* Angle Grinder offers high performance with its brushless motor, eliminating the need for changing brushes. The grinder is powered by a 20-volt battery, which is not included and must be purchased separately. With a disc size of 4.5 inches and a no-load speed of 3450 RPM, it can handle various grinding tasks effectively.

At 3.75 pounds, it is relatively lightweight, which helps in reducing user fatigue during extended use. The ergonomics are designed to make handling more comfortable, and the two-stage trigger adds an extra layer of safety by requiring two actions to activate the tool, reducing accidental startups. Additional safety features include the Kickback Brake and E-Switch Protection, which make this grinder a safer option for users.

DEWALT is a reputable brand in the tools category, and the product comes with a 3-year limited warranty, offering peace of mind regarding its durability. A significant drawback is that the tool does not come with the necessary battery and charger, which must be purchased separately. This can be an added expense if you don’t already have compatible DEWALT batteries. If you are looking for a reliable and safe cordless grinder for grinding tasks, and already own DEWALT 20V batteries, this tool could be a good fit.

The Milwaukee 2880-20 M18 FUEL Brushless Cordless Grinder is a commendable choice for users looking for a robust and reliable cordless grinder. It operates on an 18-volt battery, making it compatible with all M18 batteries, which is highly convenient for users who already own Milwaukee tools. The grinder features a 4-1/2 inch to 5 inch disc size, offering flexibility for different grinding tasks. With a no-load speed of up to 8500 RPM, it promises efficient performance for various applications.

At 4.99 pounds, it strikes a balance between being lightweight for ease of handling and sturdy for durability. Safety features like the electronic clutch for kickback protection and overload protection enhance user safety and extend motor life. Additionally, the anti-vibration side handle boosts user comfort during extended use. Ergonomically, the grinder's design aims to reduce strain and increase control, making it suitable for both professional and DIY users.

Milwaukee's reputable brand and the 5-year warranty offer peace of mind about the product's quality and support. However, it is important to note that the tool does not come with batteries included, which means an additional purchase might be necessary if users do not already own compatible batteries. Also, the weight, while manageable, might still be a bit heavy for prolonged use by some individuals. This cordless grinder stands out for its blend of performance, safety, and comfort, making it a solid choice for anyone in need of a reliable power tool for grinding tasks.

The Milwaukee M18 FUEL 4-1/2 / 5 inch Grinder Paddle Switch, No-Lock Kit is a robust cordless grinder that offers the power of an 11A corded grinder and is capable of delivering up to 135 cuts per charge. It operates on an 18V Lithium-Ion battery, which provides a good balance between cutting power and runtime. The grinder comes with a paddle-style switch that enhances safety and control during operation. The no-lock feature ensures that the grinder stops immediately when the switch is released, adding an extra layer of safety.

Weighing in at 14.02 pounds, it is on the heavier side, which might be a consideration for extended use. The disc size is versatile, fitting both 4-1/2 and 5 inches, which is ideal for various cutting and grinding tasks. Ergonomically, it is designed to be comfortable to use, although its weight may affect long-term handling. The inclusion of a bag, batteries, and charger in the kit adds value, making it a convenient option straight out of the box.

Milwaukee is a reputable brand known for its durable and high-quality tools. However, it's important to note that this grinder does not include batteries, which must be purchased separately if you don't already own compatible ones. This grinder would be best suited for professionals or serious DIY enthusiasts who need a reliable, powerful cordless option for their grinding and cutting tasks.