Makita XAG04Z 18V LXT® Lithium-Ion Review: Specs, Pros and Cons

What stands out

• Brushless motor runs cooler and lasts longer than brushed alternatives.
• Active Feedback-sensing Technology stops the motor if the wheel binds.
• Automatic Speed Change adjusts torque and RPM for the task.
• Compatible with both 4-1/2 inch and 5 inch wheels.

Who it fits

Key specs explained

Motor Type: Brushless

This motor eliminates carbon brushes, which reduces friction and heat. You get longer tool life and better efficiency compared to brushed models. The electronic control matches torque to your task, saving battery energy for up to 50% longer run time per charge. This suits users who need consistent power without frequent maintenance or brush replacements.

Power Source: 18 V cordless

The tool runs on the 18V LXT platform, allowing you to share batteries with other Makita tools. This cordless design offers mobility without cord restrictions. You can use it in tight spaces or outdoors where outlets are unavailable. When comparing kits, check if your existing batteries are compatible to avoid buying redundant power sources.

Wheel Diameter: 4-1/2 in. / 5 in.

This dual-size capability lets you switch between standard 4-1/2-inch and larger 5-inch discs. The larger wheel removes material faster, while the smaller one offers precision. This versatility is useful for various cutting and grinding jobs. You avoid buying separate tools for different disc sizes, making it a practical choice for mixed tasks.

Safety Features: AFT, Automatic Speed Change

AFT shuts off the motor if the wheel binds, protecting you from kickback. Automatic Speed Change adjusts torque and RPM to maintain performance under load. These features reduce strain on the tool and improve control. You benefit from enhanced safety and smoother operation, especially when cutting hard materials or applying uneven pressure.

Design and build details

The Makita XAG04Z features a grey and blue finish, according to the listing. This color scheme is standard for the brand. The tool measures 13.3 inches in width, 5.5 inches in height, and 8.4 inches in length. These dimensions define the physical footprint you will manage in tight spaces. The listed weight is 0.64 ounces. This figure seems unusually low for a grinder and likely refers to a specific component or is a data error. You should verify the actual handheld weight before purchase. The bare tool design means you supply your own 18V battery. This keeps the unit light and allows you to swap power sources quickly.

The layout centers on a brushless motor. This motor type removes carbon brushes, which reduces internal friction and heat buildup. You get longer tool life and better energy efficiency. The electronically controlled system matches torque and RPM to your cutting or grinding demands. Automatic Speed Change technology adjusts these parameters during operation. This helps maintain optimum performance without manual intervention. Active Feedback-sensing Technology (AFT) is also included. If the wheel stops suddenly, the motor turns off. This safety feature protects you from kickback. The design prioritizes efficiency and safety over raw power. It suits users who need precise control in confined areas. The cordless nature adds flexibility, letting you work where outlets are unavailable. You rely on the 18V LXT platform for power. This connects the tool to a wide ecosystem of compatible batteries. The build focuses on durability and smart features rather than heavy-duty industrial use.

Setup and everyday use

This tool arrives as a bare unit, so you must supply your own 18V LXT battery. The listing confirms the battery is not included. You will need to select a compatible battery from the Makita ecosystem. This design allows you to use existing power sources without buying a new pack. The grinder accepts both 4-1/2 inch and 5 inch wheels. You must ensure the correct guard is installed for the wheel size you choose. Daily operation relies on the brushless motor. This motor type eliminates carbon brushes. The result is cooler running and efficient energy use. The electronic control matches torque and RPM to your specific task. You get up to 50% longer run time per charge compared to brushed models. Automatic Speed Change technology adjusts speed and torque during cutting. This feature maintains optimum performance as you apply pressure. Active Feedback-sensing Technology provides safety. If the wheel rotation is suddenly forced to stop, the motor turns off. This prevents kickback and protects the tool. The compact dimensions fit comfortably in your hand. The lightweight design reduces fatigue during extended grinding sessions. You can use this tool for various cutting and grinding tasks. The cordless nature offers freedom of movement. You are not limited by power cords. The tool only design keeps the initial investment lower. You pay only for the grinder, not the battery. This setup is ideal for users who already own Makita 18V batteries. It integrates seamlessly into your existing workflow.

Before you buy this grinder

Since this is a bare tool, you must already own compatible 18V LXT batteries. Check your current battery inventory before purchasing. The brushless motor requires no carbon brush replacements, reducing long-term maintenance. However, you need to buy cutting and grinding discs separately. Ensure your discs match the 4-1/2 inch or 5 inch wheel diameter. The automatic speed change technology helps prevent binding, but you should still apply steady, moderate pressure. AFT stops the motor if the disc binds, adding a layer of safety. Keep the vents clean to maintain the efficient cooling system. This grinder fits well into the Power Tool Combo Kits guide as a standalone precision tool. It complements drills and drivers by handling metal and masonry tasks. You get professional-grade performance without the bulk of corded units. Just remember to store your batteries properly to extend their life.

Check before you buy

• Verify you have compatible 18V LXT batteries ready
• Check disc compatibility for 4-1/2 or 5 inch wheels
• Confirm the tool only listing meets your needs
• Ensure proper ventilation for the brushless motor

The product at a glance

1

Makita 18V Brushless 4-1/2 to 5-Inch Angle Grinder

Best for: Makita battery owners needing versatile disc sizes

Power Source

18 V cordless

Wheel Diameter

4-1/2 in. / 5 in.

Motor Type

Brushless

Battery Included

No (tool only)

Safety Features

AFT, Automatic Speed Change

Voltage

18V

View on Amazon: Makita 18V Brushless 4-1/2 to 5-Inch Angle Grinder Affiliate link

This Makita XAG04Z is an 18V cordless angle grinder designed for cutting and grinding tasks. It features a brushless motor that runs cooler and more efficiently, offering up to 50% longer run time per charge. The tool supports both 4-1/2 inch and 5 inch wheels. It includes Automatic Speed Change technology to adjust torque and RPM based on demand. It is a bare tool, so you need your own battery.

Pros

• Brushless motor for longer life and efficiency
• Supports 4-1/2 inch and 5 inch wheels
• Automatic Speed Change technology adjusts performance
• Active Feedback-sensing Technology stops motor if wheel binds

Cons

• Sold as a bare tool without a battery
• No data on included accessories or case
• Weight listed as 0.64 ounces which is likely a data error

Good fit if

• You already own Makita 18V LXT batteries
• You need a grinder that handles both 4-1/2 and 5 inch discs
• You want a brushless motor for extended run time

Skip if

• You need a complete kit with battery and charger included
• You require a tool with a different voltage platform
• You are looking for a specific weight specification that matches 0.64 ounces

Verdict: Makita 18V Brushless Angle Grinder is a solid choice for users who already have Makita 18V LXT batteries and need a versatile grinder for both 4-1/2 and 5 inch wheels. It suits professionals who value the efficiency and run time of a brushless motor.

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See also

• makita xag04z 18v lxt lithium ion alternatives
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