Milwaukee 3650-21P M18 Compact Brushless 1/4″ Hex Impact Driver Kit (1) 2AH

The Milwaukee 3650-21P M18 Compact Brushless 1/4″ Hex Impact Driver Kit is built for fast, controlled fastening in tight spaces without adding bulk to the tool bag. Measuring only 4.4″ long and 2.1″ wide, this driver fits between studs, inside cabinets, and overhead while keeping fatigue down during repetitive work. A brushless motor delivers up to 1,700 in-lbs of torque with a top speed of 3,600 RPM for productivity on common screws, lag bolts, and anchors. REDLINK™ Intelligence manages power and heat with M18™ REDLITHIUM™ batteries to maintain consistent output and help extend pack life. An all-metal gearcase and premium internals provide the durability professionals expect, and the 1/4″ hex quick-change chuck speeds bit swaps with one hand.

This kit adds a compact CP2.0 (2.0Ah) battery, an M18/M12 multi-voltage charger, and a contractor bag so users can get to work right away. As part of the M18 system, the 3650-21P is compatible with 250+ tools, keeping crews on one battery platform for drilling, cutting, lighting, and fastening across the job.

Milwaukee M18 Compact Brushless 1/4″ Hex Impact Driver Kit At a Glance

• Ultra-Compact Housing (4.4″ L): Better access in cabinets, between studs, and overhead.
• Brushless Power (1,700 in-lbs): Drives common fasteners quickly without bogging down.
• Up to 3,600 RPM: Fast driving speed for higher throughput on site.
• Variable-Speed Trigger: Improves control to protect fasteners and materials.
• All-Metal Gearcase: Built to handle daily jobsite use and transport.
• 1/4″ Hex Quick-Change Chuck: One-handed bit changes to keep work moving.
• LED Work Light: Illuminates the target area in dark corners.
• M18 Platform: Runs on Milwaukee’s 18V system with 250+ compatible solutions.

Markets

• Construction & Renovation: Structural screws, hardware, and trim installs.
• Electrical & Low-Voltage: Tapcons, device mounting, racking, and hangers in tight spaces.
• Plumbing & HVAC: Straps, brackets, sheet-metal screws, and service fasteners.
• Maintenance, Repair & Operations (MRO): Everyday fastening on equipment and facilities.
• Automotive & Equipment Service: Interior brackets, accessories, and light fabrication.
• Municipal & Facility Maintenance: Battery operation for work in occupied buildings.
• Trade Schools & Training Centers: Teaches safe impact driver technique and setup.

Contractors and maintenance teams will appreciate how this compact cordless impact driver balances speed, torque, and maneuverability. The short head length improves access in ceiling spaces and cabinets, while the variable trigger adds finesse for small hardware yet keeps pace on longer fasteners. With the included M18 CP2.0 battery and multi-voltage charger, users can cycle packs quickly and stay on one platform. The brushless motor and all-metal gearcase help the tool run cooler and last longer through daily use. For crews who carry multiple tools between jobs, the quick-change 1/4″ hex chuck, bright LED, and lightweight design make this a reliable driver for most fastening tasks without the size or weight penalty of larger models.

Milwaukee 3650-21P M18 Compact Brushless 1/4″ Hex Impact Driver Kit (1) 2AH Features

• Compact design provides excellent control for work in tight areas
• Brushless Motor delivers 1,700 in-lbs of torque and 3600 RPMs
• Variable speed trigger control reduces damage to the tool
• Compact size allows for unrivaled access in tight spaces
• Brushless Motor delivers the power to quickly complete most common applications
• Enhanced variable speed trigger control helps reduce damage to fastener and material
• Professional Durability with all metal gearcase and gears
• 0-3600 RPMs
• 1,700 in-lbs. of Peak Torque
• 4.4″ in Length and 2.1″ in Width
• 1.7 lbs tool only
• 2.6 lbs with kitted battery
• 5 year tool warranty, 2 year battery
• Compatable with 250+ solutions
• Includes: M18 Compact Brushless 1/4″ Hex Impact Driver (3650-20), (1) M18 REDLITHIUM CP2.0 Battery Pack (48-11-1820), M18/M12 Multi-Volt Charger (48-59-1812), Contractor Bag

Milwaukee 3650-21P M18 Compact Brushless 1/4″ Hex Impact Driver Kit (1) 2AH Includes

• (1)M18 Compact Brushless 1/4″ Hex Impact Driver (3650-20)
• (1) M18 REDLITHIUM™ CP2.0 Battery Pack (2.0Ah) (48-11-1820)
• (1) M18/M12 Multi-Voltage Charger (48-59-1812)
• (1) Contractor Bag

Milwaukee 3650-21P M18 Compact Brushless 1/4″ Hex Impact Driver Kit (1) 2AH Specifications

• Platform: Milwaukee M18 (18V)
• Motor Type: Brushless
• Max Torque: 1,700 in-lbs
• No-Load Speed: 0–3,600 RPM
• Drive/Chuck: 1/4″ Hex quick-change
• Variable Speed: Yes
• Tool Length: 4.4 in
• Tool Width: 2.1 in
• Tool Height: 7.7 in
• Weight (Tool-Only): 1.7 lb
• Weight (With Kitted Battery): 2.6 lb
• Cordless/Corded: Cordless
• Power Tool Features: Compact, LED Light, Sub-Compact
• Batteries/Charger: (1) 2.0Ah Battery & (1) Charger included
• Number of Tools Included: (1)
• Product Packaging (L×W×H): 9.39 in × 3.9 in × 9.49 in
• Packaged Weight: 2.09 lb

Milwaukee 3650-21P M18 Compact Brushless 1/4″ Hex Impact Driver Kit (1) 2AH Warranty

• Milwaukee’s 5 Year Limited Tool Warranty, 2 Year Limited Battery Warranty

Why Customers Choose the Milwaukee M18 Compact Brushless 1/4″ Hex Impact Driver Kit

Installers choose the 3650-21P because a compact 1/4″ hex impact driver with a brushless motor gets into confined spaces while delivering the power needed for anchors, structural screws, and hardware. The cordless impact driver design with M18 batteries means fewer trips for pack swaps and a single charger across the kit. With quick bit changes, a bright LED, and variable-speed control, crews can start fasteners cleanly and avoid stripping heads or damaging surfaces. The all-metal gearcase adds long-term durability, and the lightweight build helps reduce fatigue on overhead tasks. For a reliable everyday driver that fits most residential and commercial fastening jobs, this kit offers the right mix of speed, control, and portability.