Best Cordless Angle Grinder – Ready, Set, Grind!
Are you a DIYer or contractor looking for the best cordless angle grinder?
With the right power tools, you can tackle almost any job – from minor repairs to large renovation projects.
Cordless grinders offer flexibility and ease of use, but with so many models on the market, it can be hard to know which one is best for your needs.
In this article, we’ll break down all the considerations you need to make when choosing a cordless grinder that will help you finish those jobs in no time!
We’ll explore different types of grinders available and review their features, advantages, and disadvantages – so read on if you want to find out what makes a cordless grinder an essential tool!
How We Chose the Best Cordless Angle Grinders
Angle grinders are a must-have tool for any serious DIYer or contractor, but with so many on the market, it can be hard to know which one is right for you.
Not all angle grinders are created equal.
For the uninitiated, it can be hard to know which one is right for your needs.
We’ve taken care of the arduous research process for you, reading through thousands of Amazon reviews and product spec sheets.
We’ll walk you through the best choices available, and help you decide which features are important to you.
Overall Winner – Best Cordless Angle Grinder
DEWALT 20V MAX* Angle Grinder Tool, Tool Only (DCG413B)

Key Features
- Accepts 4-1/2″ grinding/cutting wheels
- 3,450 max RPM
- Brushless motor
- Bare tool, Dewalt batteries required
Why It’s a Great Choice
The DEWALT 20V MAX* Angle Grinder Tool is a powerful, efficient tool designed to tackle the toughest grinding and cutting tasks.
This grinder has been rigorously tested to ensure that it meets all safety standards, leaving you confident that you’ll be protected from any mishaps that may happen while you’re working with it.
With the built-in Kickback Brake and E-Switch Protection, the DEWALT grinder’s electric brake stops the wheel in 2 seconds or less on average, meaning you don’t have to worry about injury even during large-scale projects.
The two-stage trigger requires two actions to activate the tool adding an extra layer of protection so you’re always in control.
DEWALT understands the needs of both DIYers looking for an effective and fast way to get their job done right, as well as professionals who demand precision and performance.
The Dewalt Grinder delivers on these promises with its easy-to-use design, solid construction, and rapid braking feature.
Don’t let your projects bog down; maximize your cutting speed with the power of DEWALT!
Best Cordless Angle Grinder Safety Features
Milwaukee M18 18V Lithium Ion 4 1/2 Inch Cordless Grinder (2680-20)

Key Features
- Accepts 4-1/2″ grinding/cutting wheels
- 10,000 max RPM
- 3-position side handle
- Tool only, Milwaukee M18 batteries required
Why It’s a Great Choice
The Milwaukee M18 18V Lithium Ion 4 1/2 Inch Cordless Grinder is the perfect tool for any DIYer or professional.
With its patented paddle switch design, it allows you to activate the grinder quickly, even with thick work gloves on.
The “L” shape molding near the grinding wheel prevents debris and clogs from hindering your project by collecting it before it reaches an internal component.
An adjustable burst-resistant wheel guard is included to make sure you’re safe when working at any angle.
Plus, this powerful angle grinder features a 4-pole motor that delivers maximum power when cutting or grinding and overload protection which prevents damage to the tool and battery in any situation.
Get professional results from the comfort of your home with the Milwaukee cordless angle grinder!
Best Variable Speed Angle Grinder
Makita 18V LXT® Lithium-Ion Brushless Cordless 4-1/2” / 5″ Cut-Off/Angle Grinder (XAG04Z)

Key Features
- Accepts 4-1/2″ or 5″ grinding/cutting wheels
- 8,500 max RPM
- Brushless motor
- Tool only, Makita 18V batteries required
Why It’s a Great Choice
Built with intuitive features, superior power, and top-of-the-line precision, this Makita Cordless Angle Grinder is essential for any project.
This state-of-the-art grinder has a rubberized soft grip that provides comfort and control for professionals and DIYers alike.
With a one-touch slide switch for easy locking and unlocking, it’s the perfect tool for tough jobs.
Thanks to its soft start feature, you can rest assured you’ll get smoother start-ups with longer-lasting gear life.
An efficient transfer of energy is achieved thanks to Spiral Bevel gears while Automatic Speed Change technology adjusts speed and torque automatically to ensure a perfect finish on every job.
And if that wasn’t enough, Active Feedback sensing Technology (AFT) will turn off the motor if rotation suddenly stops ensuring accuracy and safety during use.
So what are you waiting for?
Get yourself the Makita 18V LXT® Lithium-Ion Brushless Cordless Grinder and make those projects come alive!
Best Cordless Angle Grinder on a Budget
PORTER-CABLE 20V MAX* Angle Grinder Tool (PCC761B)

Why It’s a Great Choice
The PORTER-CABLE 20V Max* Angle Grinder Tool provides the ultimate grinding experience.
Featuring a high-performance motor that delivers 8,500 rpm for aggressive cutting, removal, and finishing, you can be sure you’re getting the job done quickly and efficiently.
In addition to its power, this tool also features a cast metal gear housing to help dissipate heat during extended use, ensuring your safety and comfort.
With the spindle lock feature, you can quickly and easily change out your grinding blade so you can keep working without having to waste time fiddling with nuts and bolts.
The ergonomic design of the tool is one of its most impressive aspects; it has a contoured overmolded handle optimized for increased comfort and control as well as a 3-position side handle providing additional control in multiple positions.
Safety is ensured with the tool-free guard which lets you make guard adjustments quickly and easily.
All these features mean there’s no job too big or too small for this versatile angle grinder tool – perfect for DIYers or professionals alike.
Trust PORTER-CABLE to get the job done right with their 20V Max* Angle Grinder Tool!
Capable of both precise and aggressive jobs, you can rest assured that it will deliver quality results every time.
Best Angle Grinder with Battery and Charger
CRAFTSMAN V20* Cordless Angle Grinder Tool Kit (CMCG400M1)

Key Features
- Accepts 4-1/2″ grinding/cutting wheels
- 8,500 max RPM
- 3-position side handle
- Battery and charger included
Why It’s a Great Choice
Bring precision, power, and efficiency to your job site with the CRAFTSMAN V20* Cordless Grinder Tool Kit.
This premium quality grinder is packed with features designed to help you tackle tough jobs quickly and efficiently.
With a powerful high-performance motor powering it, this 41/2 in. grinder has an impressive 8,500 RPMs that will let you grind through most materials with ease.
The cast metal gear housing also dissipates heat during extended use to ensure optimal performance in any job or task.
Additionally, the tool-free guard makes for quick and easy adjustments so you can customize the grinder for specific applications.
And when it comes time for wheel changes, the spindle lock allows for quick and easy changes with minimal effort and downtime.
Make your next job go smoother and faster than ever before with the CRAFTSMAN V20* Cordless Grinder Tool Kit – perfect for DIYers and professionals alike!
Buyer’s Guide for the Best Cordless Angle Grinder
Cordless grinders are becoming more and more popular, but there are a lot of things to consider before making a purchase.
With all of the different brands, models, and features available, it can be difficult to figure out which cordless grinder is right for you.
We’ve put together this FAQ to help make your decision easier. We’ve answered some of the most common questions about cordless grinders, including what to look for when shopping for one and how to use it safely.
What is a cordless angle grinder?
A cordless angle grinder is a power tool that uses a rotating abrasive disc to cut, grind, and polish various materials. Unlike traditional corded angle grinders, a cordless grinder does not require an electrical outlet or extension cord to operate. Instead, it is powered by a rechargeable battery pack that allows for greater mobility and portability on job sites or in workshops.
Cordless grinders come in a variety of sizes and power levels, ranging from small 4-inch models suitable for light-duty tasks to larger 9-inch models capable of heavy-duty cutting and grinding. They are commonly used in construction, metalworking, automotive repair, and DIY projects.
Some advantages of using a cordless grinder include the freedom to move around without being tethered to an electrical outlet, reduced risk of tripping over cords on the job site, and the ability to work in locations where electricity may not be readily available.
However, it’s important to note that cordless grinders typically have shorter run times compared to their corded counterparts due to limited battery life. It’s also crucial to follow proper safety precautions when using any power tool, including wearing protective gear such as goggles and gloves and ensuring that the blade is securely fastened before use.
How does a cordless angle grinder work?
A cordless angle grinder works by using a motor to rotate a disc or blade at high speeds, allowing it to cut, grind, and polish various materials. Unlike corded angle grinders that require a direct electrical connection, cordless models are powered by rechargeable battery packs.
To use a cordless grinder, the user must first insert the appropriate disc or blade for the task at hand. The tool is then turned on using a switch or trigger located on the handle. The motor begins to spin the disc or blade at high speeds, generating centrifugal force that allows it to cut through materials such as metal, tile, concrete, and wood.
The user can control the depth and speed of the cut by adjusting the angle of the tool and applying varying levels of pressure. Some cordless grinders come equipped with features such as variable speed controls and adjustable guards that allow for greater precision during use.
It’s important to note that cordless grinders have limited battery life compared to their corded counterparts. As such, users should ensure that their batteries are fully charged before beginning any project and carry spare batteries if necessary.
Additionally, proper safety precautions should be taken when using any power tool, including wearing protective gear such as goggles and gloves and ensuring that the blade is securely fastened before use.
What are the advantages of using a cordless angle grinder over a corded angle grinder?
There are several advantages to using a cordless grinder over a corded one, including greater mobility and portability, reduced risk of tripping over cords on the job site, and the ability to work in locations where electricity may not be readily available.
Cordless grinders do not require an electrical outlet or extension cord to operate, making them ideal for outdoor projects or working in remote areas. They are also more convenient for tasks that require frequent movement around a job site or workshop as they allow users greater freedom of movement without being tethered to an electrical outlet.
Another advantage of cordless grinders is their ease of use. Unlike corded models that require a direct electrical connection, cordless grinders can be used almost anywhere without the need for additional equipment or setup time.
Additionally, some cordless grinders come equipped with features such as variable speed controls and adjustable guards that allow for greater precision during use. This makes them ideal for tasks that require finesse and attention to detail.
However, it’s important to note that cordless grinders typically have shorter run times compared to their corded counterparts due to limited battery life. Users should ensure that their batteries are fully charged before beginning any project and carry spare batteries if necessary.
Overall, the advantages of using a cordless grinder make it a versatile and convenient tool for construction, metalworking, automotive repair, and DIY projects.
What are some common uses for a cordless angle grinder?
Cordless angle grinders are versatile tools that can be used for a variety of tasks in construction, metalworking, automotive repair, and DIY projects. Some common uses for cordless grinders include:
Cutting: Cordless grinders can be used to cut through various materials such as metal, tile, concrete, and wood. They are ideal for making precise cuts in tight spaces or cutting through thick materials.
Grinding: Cordless grinders can also be used for grinding down surfaces or removing rust and paint from metal surfaces. They are often used in metalworking applications to smooth out welds or sharpen blades.
Polishing: Cordless grinders with polishing attachments can be used to buff and shine metals, plastics, and other materials.
Sharpening: Cordless grinders can also be used to sharpen garden tools such as shovels and lawn mower blades.
Sanding: Cordless grinders with sanding attachments can be used to remove old paint or rust from metal surfaces or sand down rough edges on wood.
Mortar removal: Cordless grinders with diamond blades can be used to remove old mortar from brick walls during renovation projects.
Overall, the versatility of cordless grinders makes them a valuable tool for professionals and DIY enthusiasts alike. However, it’s important to use appropriate safety gear when operating any power tool to prevent injuries.
How long does the battery last on a typical cordless angle grinder?
The battery life can vary widely depending on the make and model of the tool, as well as the type of battery used.
On average, a cordless grinder with a 4.0 Ah battery can last anywhere from 30 minutes to an hour of continuous use, depending on the application. However, some high-end models may offer longer run times or come with spare batteries for extended use.
It’s important to note that the battery life can be affected by several factors such as temperature, usage patterns, and the age of the battery. Extreme temperatures can shorten the lifespan of a battery while heavy use or frequent charging cycles can also reduce its overall capacity over time.
To maximize the battery life of , it’s recommended to fully charge your batteries before each use and avoid running them down completely. It’s also important to store your batteries in a cool dry place when not in use.
In summary, while there is no one-size-fits-all answer to how long a battery lasts, most models should provide sufficient runtime for most applications. Users should consult their tool manual or manufacturer for specific information regarding their particular model’s battery life expectancy.
Are there any safety concerns when using a cordless angle grinder?
Yes, there are several safety concerns to be aware of when using a cordless angle grinder. These tools can be dangerous if not used properly, and it’s important to take the necessary precautions to prevent injuries.
Here are some common safety concerns to keep in mind when using a cordless angle grinder:
- Kickback: Angle grinders can experience kickback, which is when the blade catches on the material being cut or ground and causes the tool to jerk back towards the user. This can result in serious injury or even death. To prevent kickback, always use both hands to grip the tool securely and avoid twisting the blade while cutting.
- Flying debris: When cutting or grinding materials, small particles of metal or other materials can become airborne and pose a hazard to the eyes and skin. Always wear appropriate personal protective equipment (PPE), such as safety glasses, gloves, and a dust mask.
- Burns: The blade can become very hot during use and pose a risk of burns if touched. Be sure to let the tool cool down before handling it or changing the blades.
- Electrical hazards: Cordless angle grinders rely on batteries for power, which can pose an electrical shock hazard if improperly handled or damaged. Always inspect your tool and battery for damage before use, and never touch exposed wires or terminals.
- Noise exposure: Cordless angle grinders produce high levels of noise during operation that can damage hearing over time. Use earplugs or earmuffs when using these tools for extended periods.
In summary, while they are versatile tools that offer many benefits over corded models, they require proper precautions to ensure safe operation. Always read your tool manual carefully before use, wear appropriate PPE at all times, and follow safe work practices to minimize the risk of injury.
Can I use my cordless angle grinder to cut through metal or concrete?
Yes, you can use your cordless angle grinder to cut through metal or concrete. Cordless angle grinders are versatile tools that can be used for a variety of cutting and grinding tasks, including those involving metal and concrete.
When using it to cut through metal, it’s important to select the appropriate blade for the job. Metal-cutting blades come in different sizes and thicknesses, so choose one that is suitable for the thickness of the metal you’re cutting. Always wear appropriate personal protective equipment (PPE), such as safety glasses and gloves, and be sure to secure the material being cut in place before starting.
Similarly, when cutting through concrete, it’s important to use a diamond-tipped blade designed specifically for this purpose. Concrete-cutting blades are typically thicker than metal-cutting blades and feature special diamond segments that allow them to grind through tough concrete surfaces. Again, PPE is essential when working with concrete, as small particles of dust and debris can become airborne during cutting.
In summary, cordless angle grinders are capable of cutting through both metal and concrete with the right blade. Always take proper precautions when using these tools, including wearing PPE and selecting the appropriate blade for the job at hand. With careful use and attention to safety guidelines, your cordless angle grinder can be an effective tool for many cutting tasks around your home or workshop.
How do I choose the right size and power level for my needs?
Choosing the right size and power level for your cordless angle grinder can be difficult, but it’s important to get it right to ensure that you have a tool that is both effective and safe for your needs.
Here are some factors to consider when choosing the size and power level of your cordless angle grinder:
Blade Size: Cordless angle grinders come with blades of different sizes, typically ranging from 4.5 inches to 9 inches in diameter. The size of the blade you choose will depend on the type of work you need to do. For example, if you’re working on small projects around your home or workshop, a smaller blade may be sufficient. However, if you’re working on larger projects or cutting through thicker materials, a larger blade may be necessary.
Power Level: Cordless angle grinders are available in a range of power levels, measured in volts (V) and amps (A). Generally speaking, higher voltage means more power, which translates into faster cutting speeds and greater efficiency. However, higher-powered tools also tend to be heavier and more expensive than lower-powered models.
Intended Use: Finally, consider what types of applications you plan to use your cordless angle grinder for. If you’re primarily using it for light-duty tasks such as sanding or grinding small metal parts, a lower-powered model may suffice. On the other hand, if you plan to use your tool for heavy-duty applications such as cutting through thick concrete or steel beams, a high-powered model may be necessary.
In summary, choosing the right size and power level for your cordless angle grinder requires careful consideration of several factors including blade size, power level, and intended use. By taking these factors into account before making your purchase decision, you can ensure that you have a tool that is both effective and safe for your specific needs.
What kind of accessories should I look for when purchasing a cordless angle grinder?
When purchasing a cordless angle grinder, there are several accessories that you should consider to get the most out of your tool. Here are some of the most important accessories to look for:
Blades: The type of blades you choose will depend on the type of work you plan to do with your cordless angle grinder. Look for blades designed for cutting through metal, concrete, or other materials, as well as grinding and sanding discs.
Battery: Since cordless angle grinders rely on battery power, it’s important to invest in a high-quality battery that will last long enough to complete your projects without needing frequent recharging.
Charger: Make sure your cordless angle grinder comes with a charger that is compatible with its battery. Some chargers may also have additional features such as fast charging or an automatic shut-off function.
Handle: Many cordless angle grinders come with detachable handles that can be adjusted for comfort and stability during use. Look for handles that are ergonomically designed and easy to grip.
Carrying Case: A carrying case can help protect your cordless angle grinder from damage during transport and storage, as well as keep all of its accessories organized in one place.
Safety Gear: Lastly, don’t forget about safety gear such as safety glasses, gloves, and ear protection when using your cordless angle grinder. These items can help prevent injuries and ensure safe operation.
In summary, when purchasing a cordless angle grinder, look for accessories such as blades, batteries, and chargers that are compatible with your tool and tailored to the types of projects you plan to undertake. Additionally, consider investing in a comfortable handle, carrying case, and appropriate safety gear to ensure safe operation and maximum efficiency from your tool.
Are there any maintenance requirements for my cordless angle grinder?
Yes, there are maintenance requirements for your cordless angle grinder that you should be aware of to keep your tool in good condition and ensure safe operation. Here are some important maintenance tips to follow:
Keep it clean: After each use, wipe down your cordless angle grinder with a clean cloth to remove any dust or debris. This will help prevent buildup and extend the life of your tool.
Check for damage: Before using your cordless angle grinder, inspect it for any signs of damage such as cracks, loose parts, or frayed wires. If you notice any issues, do not use the tool until it has been repaired or replaced.
Lubricate moving parts: Regularly lubricate the moving parts of your cordless angle grinder with a high-quality lubricant to reduce friction and wear on the tool.
Replace worn-out parts: Over time, certain components of your cordless angle grinder may become worn out and need to be replaced. This can include blades, batteries or other accessories.
Store properly: When not in use, store your cordless angle grinder in a dry location away from moisture and extreme temperatures. This will help prevent rust and other types of damage.
Charge battery correctly: Make sure to charge your cordless angle grinder’s battery according to the manufacturer’s instructions to avoid overcharging or undercharging which can damage the battery.
By following these maintenance tips, you can keep your cordless angle grinder in top condition and ensure safe operation every time you use it.
Choosing the Best Cordless Angle Grinder for You
So there you have it – our pick of the five best cordless angle grinders.
Whether you’re a professional craftsman or an amateur DIY enthusiast, these tools are sure to offer all the features and power you need.
All that’s left to do is decide which one suits your usage best, click the links to check the prices on Amazon, and order yours now.
With these excellent cordless angle grinders in your tool arsenal, whatever task lies ahead will be no match for you!
Be assured that with these five grinder options at your disposal, you are bound to find the perfect fit for all your needs.