{"product_id":"brushless-motor-control-board-dayi-2106-161-169-electric-wrench-18v-300w","title":"Brushless Motor Control Board for Dayi 2106\/161\/169 Wrench 18V","description":"\u003ch2\u003eBrushless Motor Control Board \u0026amp; Switch Assembly — Compatible with Dayi 2106 \/ 161 \/ 169 Electric Wrenches\u003c\/h2\u003e\n\u003cp\u003eKeep your brushless power tools running at peak performance with this high-quality \u003cstrong\u003eMotor Control Board, Motor \u0026amp; Switch Assembly\u003c\/strong\u003e, purpose-built for Dayi 2106, 161, and 169 brushless electric wrenches. Whether you're repairing, upgrading, or rebuilding, this sensorless drive control board delivers reliable 300W power output and broad compatibility with a wide range of brushless angle grinders and wrench models.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e Dayi 2106 \/ 161 \/ 169 Brushless Electric Wrench\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Voltage:\u003c\/strong\u003e 18V (fully charged: 21V) — supports 5-cell lithium string configurations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Output:\u003c\/strong\u003e 300W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Compatibility:\u003c\/strong\u003e Battery packs labeled 48V, 68V, 88V, 98V, 128VF, or TV (actual operating voltage 18V; 5S2P \/ 5S3P lithium configurations, fully charged at 21V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1× Motor, 1× Control Board, 1× Switch (default: small switch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e 1 complete set\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Control Board Assembly?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensorless Brushless Technology:\u003c\/strong\u003e Designed for brushless, sensorless motors — delivering greater torque and higher efficiency compared to conventional brush motors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutstanding Durability:\u003c\/strong\u003e Brushless motor design withstands repeated heavy-duty use, even in demanding work environments, far outlasting traditional brushed motors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Functions as a general-purpose control board suitable for various brushless angle grinders and wrench brands and models, offering excellent value and flexibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY-Friendly Installation:\u003c\/strong\u003e Engineered for easy installation — no professional technician required. Simply follow the included instructions for a smooth replacement experience.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Assembly Kit:\u003c\/strong\u003e Includes the motor, control panel, and switch in one convenient set so you have everything needed for a full rebuild or replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Installation Notes\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eConnect the wiring before fixing the motor into place.\u003c\/li\u003e\n  \u003cli\u003eSecure the motor, install the casing, and tighten all screws firmly.\u003c\/li\u003e\n  \u003cli\u003eConfirm the square shaft rotates freely without binding before connecting power.\u003c\/li\u003e\n  \u003cli\u003ePress the speed control switch fully so there is no gap in the shell — failure to do so may trigger a buzzing alarm.\u003c\/li\u003e\n  \u003cli\u003eAlways follow the setup sequence to protect the control board from damage.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eMeasurement \u0026amp; Color Notes\u003c\/h3\u003e\n\u003cp\u003eDue to manual measurement, please allow a tolerance of 1–3mm. Monitor color calibrations may cause slight differences between product images and the actual item received.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-percent-better-every-day-motivational-canvas-wall-poster-inspirational-quote\"\u003e\"1% Better Every Day\" Motivational Canvas Poster | Wall Art\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/best-seat-in-the-house-retro-quote-canvas-wall-art-print\"\u003e\"Best Seat In The House\" Retro Quote Canvas Wall Art Print\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExternal Resources\u003c\/h3\u003e\n\u003cp\u003eFor safe power tool use and electrical safety guidelines, refer to the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety Resource\u003c\/a\u003e and the CPSC Power Tool Safety Center.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which electric wrench models is this motor control board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This brushless motor control board assembly is specifically compatible with Dayi 2106, 161, and 169 brushless electric wrenches. It is also a general-purpose sensorless drive board suitable for many other brushless angle grinder and wrench models from various brands.\u003c\/p\u003e\n\u003ch4\u003eQ: What voltage and battery types does this control board support?\u003c\/h4\u003e\n\u003cp\u003eA: The control board operates at 18V (fully charged to 21V). It supports battery packs labeled 48V, 68V, 88V, 98V, 128VF, or TV — these all use 5-series lithium cell configurations (5S2P or 5S3P) with an actual working voltage of 18V and a full-charge voltage of 21V. Total power output is 300W.\u003c\/p\u003e\n\u003ch4\u003eQ: What is included in the package?\u003c\/h4\u003e\n\u003cp\u003eA: Each package includes one motor, one control board, and one switch (default small switch) — everything you need for a complete motor assembly replacement in a single kit.\u003c\/p\u003e\n\u003ch4\u003eQ: Do I need a professional to install this control board?\u003c\/h4\u003e\n\u003cp\u003eA: No professional is required. The assembly is designed to be user-friendly and straightforward. Simply follow the recommended installation sequence: connect wiring first, mount the motor, install the housing, tighten screws, verify the shaft rotates freely, then connect power and engage the switch.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which electric wrench models is this motor control board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This brushless motor control board assembly is specifically compatible with Dayi 2106, 161, and 169 brushless electric wrenches. It is also a general-purpose sensorless drive board suitable for many other brushless angle grinder and wrench models from various brands.\"}}, {\"@type\": \"Question\", \"name\": \"What voltage and battery types does this control board support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The control board operates at 18V (fully charged to 21V). It supports battery packs labeled 48V, 68V, 88V, 98V, 128VF, or TV — these all use 5-series lithium cell configurations (5S2P or 5S3P) with an actual working voltage of 18V and a full-charge voltage of 21V. Total power output is 300W.\"}}, {\"@type\": \"Question\", \"name\": \"What is included in the package?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each package includes one motor, one control board, and one switch (default small switch) — everything you need for a complete motor assembly replacement in a single kit.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need a professional to install this control board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No professional is required. The assembly is designed to be user-friendly and straightforward. 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