Brushless Angle Grinder Control Board 18V 21V 300W Drive

Upgrade or replace the drive electronics in your cordless angle grinder or polishing machine with this compact Brushless Sensorless Control Board. Engineered for 18V–21V lithium battery tool systems (5-cell Li-ion, fully charged at 21V), this 300W drive board is a reliable replacement for the 2106 brushless angle grinder platform — keeping your tools running at full performance.

Key Features

• Wide Voltage Compatibility: Works with 18V (nominal) / 21V (fully charged) 5-cell lithium battery packs.
• 300W Power Rating: Delivers consistent, efficient power to brushless sensorless motors in angle grinders and polishing machines.
• Sensorless Brushless Technology: Maximises motor efficiency and extends component life with no Hall-effect sensors to fail.
• Compact Board Size: Measures just 5.23 × 6.3 cm — a direct drop-in fit for 2106 platform tools.
• Pre-Tested Quality: Every board is functionally tested before dispatch to ensure reliable operation right out of the box.
• General-Purpose Design: Compatible with a range of 18V/21V brushless angle grinders and polishing machines using the 2106 control panel format.
• Durable Construction: PVC-insulated board housing resists everyday workshop knocks and vibration.

Specifications

• Drive Voltage: 18V (nominal) / 21V (fully charged)
• Battery Configuration: 5-series lithium-ion cells
• Rated Power: 300W
• Motor Type: Brushless, sensorless
• Board Dimensions: 5.23 × 6.3 cm
• Compatible Platform: 2106 brushless angle grinder / polishing machine
• Material: PVC-insulated PCB assembly

What's in the Box

• 1 × Brushless Sensorless Angle Grinder Drive Control Board

Who Is This For?

Ideal for DIY enthusiasts, repair technicians, and power-tool hobbyists who need a cost-effective, quality replacement control board to restore a faulty angle grinder or polishing machine to full working order — without replacing the entire tool.

For general electrical safety guidance when working with power-tool electronics, refer to the U.S. Consumer Product Safety Commission – Power Tools Safety resource.

Frequently Asked Questions

Q: Which tools is this brushless control board compatible with?

A: This control board is designed for 18V/21V brushless sensorless angle grinders and polishing machines built on the 2106 platform. The compact 5.23 × 6.3 cm form factor allows it to slot directly into the original control panel housing of compatible tools.

Q: What voltage and battery type does the control board support?

A: The board supports a drive voltage of 18V (nominal), with a fully charged input of 21V from a standard 5-series lithium-ion battery pack — making it compatible with most 18V/21V cordless tool battery systems.

Q: Is the control board tested before shipping?

A: Yes. Every control board is functionally tested prior to dispatch to verify correct operation, so you can install it with confidence.

Q: What is the power rating of this drive board?

A: This control board is rated at 300W, providing ample drive power for brushless sensorless angle grinder and polishing machine motors within the 18V–21V system range.