20V Brushless Cordless Angle Grinder 100mm (4") | 650W–680W, up to 9,500 rpm

The Dawei 20V brushless cordless angle grinder is a compact 4-inch (100mm) battery grinder for cutting, grinding, deburring and polishing metal. The brushless motor delivers strong output with less wear, and the cordless design lets you work on job sites, in workshops and in repair shops without hunting for a power outlet. Choose from 4 models: bottom-switch or top-switch design, with a 3.0Ah or 4.5Ah long-runtime battery kit.

Key Features

• Brushless motor: higher efficiency, longer service life and lower maintenance than brushed motors.

• Up to 680W max output and 9,500 rpm rated speed: enough power for metal cutting, weld seam grinding and rust removal with 100mm discs.

• 20V lithium battery platform: every kit includes 2 batteries and a charger, so one battery can charge while the other works.

• Two switch layouts: bottom-switch (SM100 series) or top-switch (SM03 series) to match different operator habits.

• Ergonomic grip and removable side handle: anti-slip rubberized grip areas for better control and less fatigue.

• Metal gear head with adjustable guard: durable construction with a protective guard for safer operation.

• Standard M10 spindle, 16mm disc bore: compatible with common 100mm grinding, cutting and flap discs.

• Packed in a medium plastic carry case: protects the tool in transport and storage, and is convenient for retail and export.

Technical Specifications & Model Comparison

Which Model Should You Choose?

• SM100-40 (bottom switch, 3.0Ah): the standard kit with the highest power class (680W, 9,500 rpm). Best for general workshop and maintenance use.

• SM100-60 (bottom switch, 4.5Ah): same 680W power with larger 4.5Ah batteries and a faster 1.5A charger for longer working time between charges.

• SM03-100(40) (top switch, 3.0Ah): top-switch layout in a 650W / 9,000 rpm version with 3.0Ah batteries, a cost-effective choice for distributors and general users.

• SM03-100(60) (top switch, 4.5Ah): top-switch layout with 4.5Ah long-runtime batteries and a 1.5A desktop charger, suited to heavier daily use.

Approximate battery energy: 3.0Ah ≈ 60Wh per battery, 4.5Ah ≈ 90Wh per battery (20V × Ah). Actual runtime depends on load, disc type and operating habits.

What's in the Box

• 1 × 20V brushless cordless angle grinder

• 2 × 20V lithium batteries (3.0Ah or 4.5Ah, depending on model)

• 1 × charger (0.6A or 1.5A, depending on model)

• Side handle and guard

• 1 × medium plastic carry case

Grinding and cutting discs are not included unless agreed in your order.

Applications

• Cutting steel bars, pipes, angle iron and sheet metal

• Grinding weld seams and removing burrs

• Rust, paint and coating removal

• Polishing and surface finishing with suitable discs

• Construction, automotive repair, metal fabrication, home DIY and outdoor work where no power outlet is available

OEM / ODM & Wholesale Supply

Dawei Metal is a hardware tools manufacturer and exporter based in Jinan, Shandong, China. We supply this cordless angle grinder series to distributors, brand owners and wholesalers in Europe, America, Southeast Asia and the Middle East. We can discuss custom logo, color, battery configuration and packaging. Contact us for MOQ, sample and price information.

Frequently Asked Questions

What disc size does this angle grinder use?

All four models use 100mm (4-inch) discs with a 16mm bore and an M10 spindle thread.

What is the difference between the SM100 and SM03 series?

The SM100 series has a bottom switch and higher output (680W, 9,500 rpm). The SM03 series has a top switch and is rated at 650W and 9,000 rpm.

What is the difference between the (40) and (60) versions?

The (40) versions include two 20V 3.0Ah batteries. The (60) versions include two 20V 4.5Ah batteries for longer runtime, together with a higher-current 1.5A charger.

Does the kit include batteries and a charger?

Yes. Each kit includes two 20V lithium batteries and one charger, packed in a plastic carry case.

Can I order with my own brand or custom packaging?

Yes. OEM/ODM orders are welcome. Please send us your requirements for logo, color and packaging.

Get a Quote

Tell us the model, quantity and destination country, and we will reply with pricing and lead time.

• WhatsApp / Tel: +86 156 6628 5386

• Email: dwhardwaretools@gmail.com

• Send an inquiry online

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