An essential tool when doing woodworking, automotive work, and landscaping, the cordless angle grinder is a handy tool for removing paint, rust, and polishing metal. Here are a few tips and reviews to help you find the best cordless angle grinder for your needs.
Comparison Table – Cordless Angle Grinder
Top 10 Cordless Angle Grinders
KIMO Angle Grinder – Best Overall
The KIMO Angle Grinder is a 4 ½ inch unit that provides 9,000 RPMs and includes a 4.0 Ah Lithium-Ion Battery and fast charger. Featuring a two-position auxiliary handle that is adjustable, this angle grinder comes with an electric brake and five grinding wheels. This cordless grinder is equipped with enough battery power to allow you to finish your projects without needing extension cords.
Efficient and Smooth
Featuring several features, the KIMO Angle Grinder is equipped with a brushless motor. Offering smooth and stable operation, this grinder features a premium and all-copper magnet the includes an efficient experience as well as a longer run time.
Equipped with a long-lasting battery, the KIMO Angle Grinder has an ergonomic design that allows you to grind concrete, rebar, tile, and metal. Ideal for a DIYers workshop, auto repair, hobbyist, or service garage, the KIMO Angle Grinder includes many accessories.
- This unit has a lot of accessories and has a solid build
- It’s easy to use and nicely balanced
- The grinder is smooth to use and runs a long time on a single charge
- It doesn’t have a lot of user-friendly friendly features
- When the battery is installed, it’s too long for the included bag
Milwaukee 2680-20 M18 Cordless Grinder – Best Comfortable Design
This 4 ½-inch grinder features an 18-volt Lithium-Ion battery and has a paddle switch design. The Milwaukee 2680-20 M18 Cordless Grinder is ideal for sharpening tools and cutting through PVC pipe and metals. This is a high-quality power grinder that works well for industrial applications and works well out at the job site.
Comfortable and Adjustable
Providing up to 10,000 RPMs, the Milwaukee 2680-20 M18 Cordless Grinder includes a three-position plastic handle that features a rubber texture for better control. The wheel guard is adjustable allowing you to work on many different projects thanks to the different cutting angles you can use. This is an easy-to-use tool that is equipped with a paddle-style power switch that is simple to operate while wearing work gloves.
Versatile and Adjustable
Perfect for demo projects, plumbing, or automotive repair, the Milwaukee 2680-20 M18 has the speed and durability you need to work in an industrial setting. Featuring Redlink Intelligence, you can work hard without wearing down the motor due to the cross-communication that happens between the battery and the tool. You also get tool-free guard adjustments and L-shaped intake vents that protect the grinder from dust and debris getting inside and damaging internal parts.
- This is a versatile angle grinder that you can use on many different projects
- It’s a long-lasting and durable tool that uses technology to extend its life
- Adjustments are easy to make without needing tools
- It gets really hot as it operates
- The batteries drain really quickly
Ryobi ZRP421 ONE Plus Angle Grinder – Best Durable Design
The Ryobi ZRP421 ONE Plus Angle Grinder is a cordless 18-volt angle grinder. This 4 ½-inch angle grinder offers convenience as well as a powerful rotation. It includes a large 10-inch cutting disk that you can use to cut copper pipes.
Safe and Versatile
This angle grinder is a great choice when you need to cut pipes that have water in them since it is much safer than angle grinders that you need to plug in. The Ryobi ZRP421 ONE Plus Angle Grinder is a great choice when you aren’t near an outlet and don’t want to deal with an extension cord.
- This is a durable and long-lasting tool
- It’s very handy when you’re not near an outlet
- This unit is safe to use on pipes
- It runs through batteries quickly
- It’s not easy to get replacement parts
Popoman Cordless Angle Grinder – Best Portable Design
Easy to operate, the Popoman Cordless Angle Grinder is a brushless, 4 ½-inch grinder that includes a 4.0Ah Lithium-ion battery along with a fast charger. Equipped with a three-position handle, this grinder gives you a consistent speed of up to 10,000 RPMs. Featuring a high-performance copper motor, this grinder has less internal friction, so it can give you up to 24 percent more power in comparison to other brushed motor tools.
Portable and Handy
Convenient and portable, the Popoman Cordless Angle Grinder has a handle that is comfortable for both right or left-handed users to operate. Accessories can be quickly installed thanks to the included wrench allowing you to work quickly and safely. It also includes built-in overload protection and a burst-proof guard that is easy to adjust and install.
- This is a portable and handy tool to have in your workshop
- It is comfortable and easy to use
- The accessories are easy and fast to install
- It’s not a good choice for a professional
- The battery will drain quickly
Bosch GWS18V-45 Angle Grinder – Best Professional Level Angle Grinder
Cordless and powerful, the Bosch GWS18V-45 Angle Grinder is a great choice for anyone that needs professional power like plumbers and electricians. Using a four-brush motor design, this angle grinder includes an optimized gear structure and provides up to 10,000 RPMs. You can use this angle grinder for both grinding and cutting applications, and it also includes a side handle that offers Vibration Control and a two-position design that reduces operator fatigue and gives you better handling.
Using an optimized brush design, the Bosch GWS18V-45 Angle Grinder was created to give you long tool life. It also features a burst-resistant wheel guard and restart protection to prevent accidental startups. This is a comfortable to control tool that provides you with smoother grinding as well as incredible cutting ability, plus the machine is optimized for metal applications.
- It feels really good in your hand when operating it
- It needs a dust collection system
- This is a powerful machine and a long lifespan
- The angle guards are hard to adjust
- It would be better with a no-tool adjustment feature
Skil Angle Grinder – Best User-Friendly Design
Equipped with a 20-volt Lithium battery and charger, the Skil Angle Grinder is capable of handling any kind of task. This angle grinder is a powerful tool that is capable of grinding metal and includes several user-friendly features that include restart protection. This convenient cordless tool comes with a lock-on switch as well as a spindle lock for easy wheel changes.
Featuring a three-position side handle, the Skil Angle Grinder also includes tool-free guard adjustments as well as a powerful motor that gives you speed up to 8,500 RPMs. The soft-start provides ease of use while the patented temperature management system provides a longer battery life and longer run time. It also includes an LED fuel gauge, onboard tool storage, and a metal gearbox.
Versatile and Easy to Control
The Skil Angle Griner allows you to sharpen, polish, sand, cut, and grind metal. Offering enhanced control, this unit is great for a wide range of DIY tasks.
- This is a great tool for any homeowner
- It is powerful and easy to use
- Wheel changes are very easy
- Its only good for minor jobs
- The battery doesn’t last very long
Riiai Brushless Angle Grinder – Best Compact Design
The Riiai Brushless Angle Grinder is a cordless electric angle grinder that comes with an 18-volt Li-ion battery. Perfect for polishing, grinding, and cutting, this tool comes with a high-power motor providing an efficient operation experience. This high-performance 800-watt motor gives you speeds up to 10,000 RPMs and features increased torque for tough cutting and grinding jobs.
Compact and Safe
With a compact size, the Riiai Brushless Angle Grinder features incredible heat dissipation that protects the engine making it very durable. It also prevents burning and has an anti-overload feature. With its spindle lock, you get fast and easy accessory changing as well as a trigger lock-on allowing for continuous and comfortable operation.
This portable angle grinder has an ergonomic design that allows you to comfortably grip the tool. The Riiai Brushless Angle Grinder is lightweight and features a small non-slip handle.
- It’s durable and comfortable to use
- This compact tool has an ergonomic design
- It’s an efficient tool that can handle tough jobs
- The safety cut-out is a bit sensitive
- The switch is stiff to use
DEWALT FLEXVOLT Angle Grinder – Best Safety Features
Featuring a kickback brake, the Dewalt Flexbolt Angle Grinder is a 4 1/2-inch to 6-inch grinder that comes with several safety features. Equipped with up to 30 percent more power, this angle grinder comes with a 13 Amp motor delivering up to 9,000 RPMs. It also comes with an anti-rotation E-CLUTCH system and a brake that engages when you release the trigger.
The Kickback Brake will engage when a bind-up, stall, or pinch is sensed by the tool. Engaging with maximum force, this angle grinder will stop the wheel quickly while reducing the movement of the grinder and then shut off the grinder.
- It has great safety features
- This is a powerful grinder that gives you more power than other models
- It will stop automatically when it senses an issue
Vpment Cordless Angle Grinder – Best Ergonomic Design
Equipped with a 4.0 Ah Lithium-Ion Battery and a fast charger, the Vpment Cordless Angle Grinder comes with five cutting wheels, five grinding wheels, and an electric brake. This cordless angle grinder includes a two-position auxiliary handle that is easy to adjust and a high-performance motor that provides up to 9,800 RPMs giving you high output speeds for any milling application. Using brushless motor technology, this grinder will avoid energy and pressure losses while its design will allow you to work in a narrow area.
Featuring an ergonomic design, the Vpment Cordless Angle Grinder is capable of cutting concrete, rebar, tile, and metal. This ergonomic and rubberized two=position grip handle will increase your comfort as you work on any job. Featuring wireless flexibility, you aren’t restricted by space or outlets. This portable grinder can be used inside and out and includes a one-hour fast charger so you can keep working with few interruptions.
Durable and Safe
The Vpment Cordless Angle Grinder is durable and safe to use. It features an overheat protection feature as well as a built-in overcharge element that will protect the battery. The quick-release cover will prevent sparks, and it can automatically turn off when the current is excessive.
- It has great safety features
- This is a durable and ergonomically designed grinder
- It includes a really fast charger
- There is no customer service to contact with any issues
- The power switch location is not well-designed
Posenpro Cordless Angle Grinder – Best Handling Design
Featuring a powerful brushless motor, the Posenpro Cordless Angle Grinder includes a 20-volt motor that gives you more run time and power. Causing less internal friction, this grinder has a high-performance brushless copper motor that lets you deliver up to 25 percent more power than other grinders on the market. With an ergonomic design, this grinder delivers up to 8,000 RPMs so you can grind metal and cut concrete, tile, and rebar.
Versatile and Easy to Use
This grinder is a great choice when working on auto repair, in a service garage, or any workshop. The Posenpro Cordless Angle Grinder is handy and portable making it a great choice when working outside. It’s also easy to use and has a two-position handle that is comfortable for either right- or left-handed users to operate.
Offering less fatigue for the operator and better handling, the Posenpro Cordless Angle Grinder includes a spindle lock that is easy to access and makes wheel changes seamless. The aluminum wheel guard is rugged and adjustable, plus it offers safety and convenience when you are operating it.
- It has great safety features
- This is a very easy to use tool
- It has a powerful design that is comfortable to use
- It’s too flimsy for regular use
- This unit wears out quickly
Buyer’s Guide – Considerations When Choosing a Cordless Angle Grinder
Features to Look for When Choosing a Cordless Angle Grinder
Requiring attachments and accessories to be effective, a cordless angle grinder should include features like a cut-off wheel, grinding wheel, and guard. The wheel will need to be switched out depending on what project you are working on. The guard is important in deflecting sparks and debris when you operate the tool, plus it will protect you from getting injured if the spinning wheel slips and flies out of the machine.
With these included accessories, it’s important to think about how the accessories will be changed out. Some angle grinder includes tool-free changes while others will include a tool on board for effective and fast accessory switches.
Since we are talking about cordless angle grinders, it’s important to consider how powerful and long-lasting the battery is. You will want a tool that has a rechargeable battery with voltage that ranges between 18 and 20-volts. You also want to make sure that the battery and charger are included with the tool, otherwise, it will be an additional charge if you have to purchase it separately.
The motor is another important consideration since it’s what operates the machine, and its power determines what tasks the tool will be able to perform. The spin speed is stated in RPMs, and you will want to look for a tool that has between 7,000 and 11,000 RPMs to ensure reliability.
Along with the battery, the motor will determine the runtime of the angle grinder. Look for tools that use technology to extend the motor life and runtime of the product such as brushless motor technologies. Tools with this type of design are worth the investment since you will get a considerable amount of runtime per battery charge, which will allow you to get a lot more work done.
The size of the disc will also determine the projects you can complete as well as what type of motor you will need to have. Basically, models with larger disc sizes will need a more powerful motor to operate it. Remember that based on the types of projects you are doing, you will need to find an angle grinder with the right-sized disc for efficiency and convenience.
Precision is another consideration when choosing a disc size, so keep that in mind as you shop. You will find that disc sizes range from 4 ½ to 9-inches, and your projects will quickly tell you what sized disc you need for your angle grinder.
Benefits of a Cordless Angle Grinder
You can perform a large variety of jobs with an angle grinder including:
- Cut ceramics, concrete, and stone
- Tuckpointing walls
- Sharpen garden shears or lawnmower blades
- Cutting pipes, chopping rebar, and severing bolts
- Grind welds to a smoother finish
- Polish painted surfaces and auto bodywork
- Remove rust or paint and prep surfaces for painting
What is a Cordless Angle Grinder?
A cordless angle grinder is really a pretty simple tool. The power sources will drive a set of gears that rotates the head. Situated at a 90-degree angle to the motor, the head is clamped to the wheel using a threaded retaining ring. You will also see a safety guard that typically covers the back half of the disk, which can often be rotated to change the debris or spark path.
You will grip the main body of the grinder, which gives you added control through the side handles that can be mounted on the right or the left. A trigger or switch will operate the angle grinder and send power to rotate the wheel. You will also usually have a lock button on the trigger, so you won’t have to keep your finger on it the entire time while the spindle locks will stop movement as you change the wheels.
A helpful tool in metalworking shops and auto body shops, the cordless angle grinder often has a compressed air power source. At home, you will find corded and cordless electric power sources. The angle grinder also offers incredible versatility in the range of wheels and accessories that you can attach.
A cordless angle grinder has become a widely used tool in the metal fabrication field. Ideal for grinding, sanding, cutting, and polishing, an angle grinder is easy to use and adjust allowing you to work on a wide range of projects. Just make sure that the cordless angle grinder that you choose will have the features you need to complete the projects you have planned.