AOBEN Cordless Angle Grinder 4-1/2 Inch | 21V Kit with Brushless Motor & 2x4.0Ah Batteries

Cordless convenience meets focused performance

The AOBEN Cordless Angle Grinder brings a 4-1/2 inch grinding machine into a compact, cordless package. Powered by a brushless motor, it delivers longer life, steadier performance, and cooler operation than traditional motors, making it well-suited for metal grinding, descaling, and surface prep projects. When you need portability without sacrificing power, this grinder offers a reliable, air-conditioned feel in hand, with smooth starts and confident control.

Three speeds for real-world versatility

Customize your approach with three adjustable speeds up to a peak of 9,500 RPM. This flexibility supports a range of tasks—from rust removal and tile cutting to polishing or light grinding—so you can dial in the right balance of speed and finish for each material you work with.

• 3 speeds for grinding, cutting, and finishing with different materials
• Fast heat dissipation helps maintain performance during longer sessions
• Lower energy use thanks to the efficiency of a brushless motor

Built for endurance and convenience

Dual 4.0 Ah lithium-ion batteries power long operation times without a cord getting in the way. The design is compact and comfortable to hold, which reduces fatigue on extended jobs. Note that battery packs are brand-specific for best compatibility.

• Two 4.0 Ah batteries with a dedicated charger mean fewer interruptions
• Compact, ergonomic design that feels balanced in hand
• Includes protective wheel guards to shield you from sparks and debris

Universal size with practical features

At 4-1/2 inches, this grinder fits a wide range of discs and accessories. The 7/8" arbors and 5/8"-11 spindle together with a spindle lock enable faster wheel changes, while the auxiliary handle offers added control and comfort during use. A smart chip provides overload and overheating protection to help the tool recover quickly if needed.

• 7/8" arbor and 5/8-11 spindle for broad accessory compatibility
• Spindle lock speeds up wheel changes
• Double wheel guards included for enhanced safety

What’s in the box

Everything you need to get started is packed in one tool case: the cordless angle grinder, two 4.0 Ah batteries, a charger, handle, two wheel guards, two cutting wheels, two grinding wheels, two sanding wheels, a wrench, and a sturdy case. A note on protection: the tool may momentarily pause if overload or overheating is detected to protect the motor and battery, then resume when ready.

Whether you’re upgrading your shop or tackling a weekend project, the AOBEN 21V cordless angle grinder offers flexibility, protection, and portability without tying you to a power outlet. It’s a practical choice for metal cutting, grinding, and surface prep where distance and maneuverability matter.