Brushless Angle Grinder Control Board 18V 21V – Dayi 2106
Brushless Angle Grinder Control Board 18V 21V – Dayi 2106
Brushless Angle Grinder Speed Drive Control Board – 18V/21V (Dayi 2106)
Keep your brushless angle grinder or polishing machine running at peak performance with this sensorless drive control board. Designed as a direct-fit general replacement for the Dayi 2106 / 169 series, this compact control board manages speed switching and power delivery with precision — making it an essential spare or upgrade for your power tool workshop.
Key Specifications
- Compatible Tools: 18V / 21V Brushless Angle Grinder & Polishing Machines (Dayi series and general-fit models)
- Drive Voltage: 18V (5-cell lithium battery string; fully charged: 21V)
- Power Output: 300W
- Control Panel Size: 5.2 × 6.2 cm
- Type: Brushless sensorless drive control board
- Material: Durable plastic housing
- Color Options: 3 options available
- Pre-tested: Every board is functionally tested before dispatch
Why Choose This Control Board?
- ✅ Precise Speed Control: Smooth speed switching for consistent grinder or polisher performance
- ✅ Broad Compatibility: General-fit design suits a wide range of brushless angle grinder models
- ✅ Compact & Lightweight: Easy to install in tight tool housings without modification
- ✅ Quality Tested: Each unit undergoes functional testing before shipping so you get a board that works right out of the box
- ✅ Great Value: An affordable way to restore or upgrade a brushless power tool rather than replacing the entire unit
What's in the Box?
- 1 × Brushless Sensorless Speed Drive Control Board (Dayi 2106 / 169)
Important Safety Note
Always disconnect your power tool from its battery pack before replacing internal components. For guidance on safe power tool practices, visit the OSHA Power Tools Safety Resource.
Frequently Asked Questions
Q: What power tools is this brushless control board compatible with?
A: This drive control board is designed for brushless sensorless angle grinders and polishing machines operating at 18V–21V, including the Dayi 2106 / 169 series. Its general-fit dimensions (5.2 × 6.2 cm) also make it suitable for a range of similarly sized brushless power tools that accept a 300W, 18V/21V drive board.
Q: What voltage and power does this control board support?
A: The board is rated for an 18V drive voltage, supplied by a 5-cell lithium battery string (which reaches 21V when fully charged). Maximum power output is 300W, making it well-suited for angle grinding and surface polishing applications.
Q: Is the control board tested before shipping?
A: Yes — every control board is functionally tested before it leaves the warehouse to ensure it operates correctly, giving you confidence in your purchase from day one.
Q: How do I safely replace the control board in my angle grinder?
A: Always remove the battery pack from your tool before opening the housing. Carefully disconnect the original board's wiring connectors, noting their positions, then connect the replacement board in the same configuration. Refer to your tool's service manual or consult a qualified technician if you are unsure. See the OSHA Power Tools guidelines for general safe-handling practices.