Brushless Electric Wrench Drive Control Board – Dayi 2106/161/169
Brushless Electric Wrench Drive Control Board – Dayi 2106/161/169
Brushless Electric Wrench Drive Control Board for Dayi 2106 / 161 / 169
Keep your Dayi brushless electric wrench running at peak performance with this direct-fit drive control board and switch. Each unit is individually tested before shipping so you can install with confidence. Whether you're replacing a faulty board or upgrading a rebuild project, this compact control board delivers reliable sensorless brushless motor management in a proven 5.2 × 6.2 cm form factor. Made in Mainland China.
Key Features
- Compatible Models: Dayi 2106, 161, and 169 brushless electric wrenches
- Drive Voltage: 18V nominal (5S lithium configuration, fully charged to 21V); rated power 300W
- Wide Battery Pack Compatibility: Works with battery packs labeled 48V, 68V, 88V, 98V, 128VF, or TV — all of which operate at an actual 18V (5S2P / 5S3P lithium configurations, fully charged 21V)
- Sensorless Design: Brushless sensorless angle grinder / electric wrench drive control — no Hall sensors needed
- Compact Size: 5.2 × 6.2 cm control panel fits standard tool housings
- Pre-Tested: Every board is function-tested before sale for peace of mind
- DIY Metalworking Repair: Ideal replacement part for tool repair technicians and DIY enthusiasts
Important Setup Instructions
To ensure proper operation and avoid motherboard damage, follow this sequence before powering on:
- Connect all wiring harnesses first
- Secure the motor in place
- Install the tool casing
- Tighten all screws
- Confirm the square output shaft rotates freely without binding
- Connect the battery / power supply
- Press the speed-control switch to start
Note: Skipping these steps may trigger a buzzing alarm or cause damage to the control board. Always follow the assembly sequence above.
Specifications
| Drive Voltage | 18V (21V fully charged) |
| Rated Power | 300W |
| Board Dimensions | 5.2 × 6.2 cm |
| Motor Type | Brushless Sensorless |
| Compatible Tools | Dayi 2106 / 161 / 169 Electric Wrench |
| Country of Origin | Made in Mainland China |
Package Contents
- 1 × Drive Control Board OR 1 × Speed Control Switch (choose your variant)
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Frequently Asked Questions
Q: Which brushless electric wrench models is this drive control board compatible with?
A: This brushless drive control board is specifically designed for Dayi model 2106, 161, and 169 brushless electric wrenches. It is also suitable as a general sensorless brushless angle grinder drive board for 18V/21V tools with a 5-series lithium battery configuration and 300W power rating.
Q: What battery packs are compatible with this control board?
A: The board operates at 18V nominal (fully charged to 21V) using a 5-series lithium battery pack. Battery packs marketed as 48V, 68V, 88V, 98V, 128VF, or TV are all compatible — these labels are marketing figures; the actual operating voltage of those packs is 18V with either a 5S2P (10-cell) or 5S3P (15-cell) configuration.
Q: Why is there a buzzing alarm when I power on the tool?
A: A buzzing alarm typically occurs when the assembly sequence was not followed before connecting power. Always connect all wires, mount the motor, install the casing, tighten screws, and verify the square shaft rotates freely before connecting the battery and pressing the switch. Following this order prevents alarm triggers and protects the control board.
Q: Is this control board pre-tested before shipping?
A: Yes — every drive control board is individually function-tested before it leaves the facility, so you can be confident the unit is in working order upon arrival.