5 Best Cordless Grinder – Honest Review 2021

Looking for the Best Cordless Grinder?

In A Rush? Check Out The Number 1 Pick Here:

Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
7,360 Reviews
Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
  • 8,000 rpm motor provides high power for cutting and grinding applications for the angle grinder
  • DEWALT grinder comes with Quick-Change Wheel Release allowing tool free wheel removal without need for a wrench
  • Tool-free guard of the metal grinder allows for quick and easy guard adjustments/positioning
  • 2-finger trigger switch with lock-off button for convenient activation and easier gripping
  • 2-position side handle offers greater control, comfort and versatility

Angle Grinder is an important tool for home improvement as well as for professionals. Initially, professionals were comfortable with the electric grinder options. But with the enhancement and improvement in technology, these grinders are also available in cordless form. If you are looking for the best cordless grinder, you can check out different features, pros, and cons and get the one that suits your requirement. 

Best Seller
Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
Editor Choice
Makita XAG20Z 18V LXT BL 4-1/2”/ 5" Paddle Cutoff/Angle Grinder
Best Budget
Bosch GWS18V-45 18V 4-1/2 In. Angle Grinder (Bare Tool)
Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
Makita XAG20Z 18V LXT BL 4-1/2”/ 5" Paddle Cutoff/Angle Grinder
Bosch GWS18V-45 18V 4-1/2 In. Angle Grinder (Bare Tool)
Best Seller
Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
Editor Choice
Makita XAG20Z 18V LXT BL 4-1/2”/ 5" Paddle Cutoff/Angle Grinder
Makita XAG20Z 18V LXT BL 4-1/2”/ 5" Paddle Cutoff/Angle Grinder
Best Budget
Bosch GWS18V-45 18V 4-1/2 In. Angle Grinder (Bare Tool)
Bosch GWS18V-45 18V 4-1/2 In. Angle Grinder (Bare Tool)

How Can You Get the Best Cordless Grinder?

It is not difficult to get the best cordless grinder if you know the factors you need to check out. 

The Material:

Check out the material of the grinder so that the grinder remains durable with you.

The Motor:

You will require a motor depending upon the purpose for which you are getting the grinder.

The Battery:

One of the most important factors that you should not skip out in a cordless grinder is the battery. 

The Features:

Have a look at the features or accessories you are getting in the cordless grinder you are buying.

The Reviews:

Do not forget to check out the reviews from different customers about the product and the brand. 

The Warranty:

It is always a great idea to get a grinder that has proper warranty support from the manufacturer.

The Price:

It is not always necessary that you have to pay a hefty amount for the best cordless grinder. You can also get several best options at an affordable cost. 

Top Options in the Best Cordless Grinder

1. Dewalt DCG412B | Best Cordless Grinder

Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
7,360 Reviews
Dewalt DCG412B 20V MAX* Lithium Ion 4-1/2” grinder (Tool Only)
  • 8,000 rpm motor provides high power for cutting and grinding applications for the angle grinder
  • DEWALT grinder comes with Quick-Change Wheel Release allowing tool free wheel removal without need for a wrench
  • Tool-free guard of the metal grinder allows for quick and easy guard adjustments/positioning
  • 2-finger trigger switch with lock-off button for convenient activation and easier gripping
  • 2-position side handle offers greater control, comfort and versatility

Dewalt DCG412B is the best option in this list due to the several features that it offers. Coming from a reliable brand Dewalt, this grinder is surely a reliable option.

Pros
  • You can use this grinder for several difficult applications.
  • It also has the feature of Quick Change.
  • The grinder runs at 8000 RPM.
  • The handle comes with an ergonomic design and a trigger switch.
  • You can use this versatile grinder with different wheel options. 
Cons
  • The price is only a bit expensive.

Dewalt-DCG412B

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2. Makita XAG20Z | Reliable Cordless Grinder

Makita XAG20Z 18V LXT BL 4-1/2”/ 5' Paddle Cutoff/Angle Grinder
305 Reviews
Makita XAG20Z 18V LXT BL 4-1/2”/ 5" Paddle Cutoff/Angle Grinder
  • Electric brake stops the grinding or cut-off wheel in 2 seconds or less for maximum productivity
  • Active feedback-sensing technology (aft) turns the motor off if rotation of the wheel is suddenly forced to stop
  • Automatic speed change technology adjusts speed and torque during operation for optimum performance
  • The BL Brushless motor eliminates carbon brushes, enabling the BL motor to run cooler and more efficiently for longer life
  • Variable speed control dial allows Manual RPM adjustment (3, 000-8, 500) to match the speed to the application

Makita XAG20Z is one of the most powerful and reliable options in this category. Makita is another worth trusting brand for grinders. 

Pros
  • The brushless motor in the grinder offers an efficient result.
  • The rubber body comes in a slim shape for better grip.
  • You stay safe with the help of the feature of anti-start.
  • Be safe also with the automatic adjustment of the torque and speed.
  • The electric brake is another safety feature in the grinder.
Cons
  • It is not a light weighted grinder. 

Makita-XAG20Z

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3. Bosch GWS18V |Premium Choice

Sale
Bosch GWS18V-45 18V 4-1/2 In. Angle Grinder (Bare Tool)
265 Reviews
Bosch GWS18V-45 18V 4-1/2 In. Angle Grinder (Bare Tool)
  • LONGEVITY: The Bosch GWS18V-45 18V Angle Grinder delivers all-day grinding and cutting power. It’s designed for a longer tool life with Bosch's Electronic Cell Protection and Electronic Motor Protection.
  • POWER: The grinder includes a powerful four-brush motor design with 0-10,000 no-load rpm to handle the toughest cutting and grinding jobs.
  • CONTROL: The tool features a two-position Vibration Control side handle, for comfortable control, less user fatigue and smoother grinding.
  • SECURE: For user protection, this cordless grinder was engineered with a tool-less quick-change, burst-resistant wheel guard and restart protection to avoid accidental startup.
  • PRECISION: The Bosch GWS18V-45 18V Angle Grinder provides outstanding cutting ability and is optimized for metal applications.

Bosch GWS18V is a power-packed grinder that you can have for your work. Whether it is a home-based activity or a professional task, this grinder can be a great help. 

Pros
  • The 6 amp motor delivers a speed of 10,000 rpm.
  • You can use this, especially for metal cutting purposes.
  • The design is very much durable and reliable.
  • It is great for heavy-duty activities, too, along with other tasks. 
Cons
  • You have to get the battery and the charger separately. 

Bosch-GWS18V

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4. Ryobi ZRP421 | Best Value for Money Cordless Grinder

Sale
Ryobi ZRP421 ONE Plus 18V Cordless 4-1/2' Angle Grinder (Bare Tool)
611 Reviews
Ryobi ZRP421 ONE Plus 18V Cordless 4-1/2" Angle Grinder (Bare Tool)
  • Brand New in box. The product ships with all relevant accessories

Ryobi ZRP421 is truly value for money as it has several features and is available at a reasonable price. 

Pros
  • It has a solid construction and has the feature of a trigger switch.
  • It has several advanced features such as GripZone and a tool-free guard.
  • It has a warranty of 3 years.
  • The tool is also compatible with the battery range of O+. 
Cons
  • It is not a very powerful grinder.  

Ryobi-ZRP421

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5. Skil 20V | Best Budget Cordless Grinder

Skil 20V 4-1/2 Inch Angle Grinder, Includes 2.0Ah PWRCore 20 Lithium Battery and Charger - AG290202
231 Reviews
Skil 20V 4-1/2 Inch Angle Grinder, Includes 2.0Ah PWRCore 20 Lithium Battery and Charger - AG290202
  • CUT, SAND, POLISH AND SHARPEN—Use this cordless grinder for a variety of DIY tasks including cutting tile, grinding metal, sanding, polishing, sharpening and more.
  • LONGER RUN TIME & BATTERY LIFE—The PWRCore 20 Lithium Battery has an innovative temperature management system to keep battery cool and powering on through your project
  • 3-POSITION SIDE HANDLE—Choose the positioning that works best for you and the task at hand
  • DUAL FUNCTION LOCK-ON SWITCH—Prevents accidental start up and locks on for convenient prolonged use.
  • ENHANCED CONTROL—An easier and safer start.

Skil 20V is another reliable grinder from a reliable brand Skil. Not just is this tool reliable, but it is also one of the best budget-friendly options available.

Pros
  • Cost-effectiveness is the very first pros of this tool.
  • The side handle of the grinder is quite comfortable for a better grip.
  • You can start the motor with a soft touch.
  • The weight is distributed throughout the body to offer better control.
Cons
  • This budget-friendly grinder is not good for heavy-duty applications. 

Skil-20V

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FAQs:

Q1. What should I see in a cordless grinder for beginners?

Answer: When buying a cordless grinder for beginners, check for the features such as a brushless motor and the lithium battery. 

Q2. Can a budget-friendly cordless grinder offer a reliable performance?

Answer: Of course, a budget-friendly grinder can also offer a reliable performance if you have checked through the product’s features. 

Verdict:

When you search for the best cordless grinder, you can develop several options, such as the ones mentioned in the list above. From the list, if you are searching for the best option, you can surely go with Dewalt DCG412B 20V MAX Lithium-Ion 4-½” grinder. 

Bestseller No. 1
Festool 575348 Cordless Angle Grinder AGC 18 Plus
2 Reviews
Festool 575348 Cordless Angle Grinder AGC 18 Plus
  • Work appropriately for the material: Speed can be steplessly adjusted between 4500 and 8500 rpm
  • Ideal ergonomics for cutting work: Its design means that it fits well in the user's hand, runs smoothly and generates few vibrations
  • Systems get it done: Compatible with the battery packs and chargers in the Festool 18 Volt System
  • Get results fast: Thanks to the powerful, brushless – and therefore maintenance-free – EC-TEC motor
  • Soft start-up, electronic overload protection, motor brake and restart protection
Bestseller No. 2
Angle Grinder Tool, SUNCOO 21V 4-1/2-Inch Grinders Cordless Die Grinder with 1 Grinding Wheels, 2 Cutting Wheels, and Auxiliary Side Handle,1 pc 2.0Ah Lithium-Ion Battery & Charger
9 Reviews
Angle Grinder Tool, SUNCOO 21V 4-1/2-Inch Grinders Cordless Die Grinder with 1 Grinding Wheels, 2 Cutting Wheels, and Auxiliary Side Handle,1 pc 2.0Ah Lithium-Ion Battery & Charger
  • 【7500RPM 21V High Speed Angle Grinder】: Cordless eliminates the trouble of the winding cables and gives great convenience to carry around, which is suitable for indoor and outdoor use. The Brushless angle grinder can achieve 7500RPM No Load Speed per minute. High-performance motor provides high output and output speeds for milling applications. Brushless motor technology avoids pressure and energy losses.
  • 【Lightweight Design & Overheat Protection Function】: To reduce users’ pressure, designers spent many time in designing internal structure and selecting materials so that you can carry it anywhere and anytime. Built-in overcharge and overheat protection can protect the battery. The quick-release cover can prevent sparks. Innovative ventilation holes help prevent dust and dirt, improving performance.
  • 【Removable 2-Position Auxiliary Handle Design】: 21V electric angle grinder with removable handle for better control, comfort. You can easily work on the left, right and top as needed
  • 【3 Speed Adjustable &Power Display & Fast Charger 】: This angle grinder with 3speed adjustment design, make your work more convenient and widely suitable for metal wood cutting grinding, rust removal. Powerful 21V battery can extend working time indoor & outdoor. Power display & fast charger which can keep the cordless angle grinder working stably for a long time.Package List: 2Grinding Wheels; 2Cutting Wheels; 1*Anti-vibration Side Handle; 1*Fast Charger;1*21V Battery; 1*Wrench;1*carry box
  • 【Automatic Locking Operation Design】: Ergonomic Button Position for Reducing Hand Pressure. Only press this automatic button, it can be operated automatically, you only need to master the parts that need to be cut, polished, and polished. The automatic locking operation design means it is easier to operate.
Bestseller No. 3
Enertwist Cordless Angle Grinder 20V MAX Brushless, 4 1/2', 0-8000 RPM w/ 4.0AH Lithium-Ion Battery & Fast Charger, 2-Position Auxiliary Handle, Electric Brake, 3+2+2 Cutting & Grinding& Flat Wheels
27 Reviews
Enertwist Cordless Angle Grinder 20V MAX Brushless, 4 1/2", 0-8000 RPM w/ 4.0AH Lithium-Ion Battery & Fast Charger, 2-Position Auxiliary Handle, Electric Brake, 3+2+2 Cutting & Grinding& Flat Wheels
  • 【 Powerful 20V 4.0Ah Battery & Fast Charger】 20V cordless grinder with 4.0AH battery and fast charger will shorter your working process and longer running time. LED power indicator lets you know the power status at any time. Speed up your working! Ergonomic soft rubber and slim tool body design makes the work more comfortable.
  • 【Brushless Motor 】Powerful premium brushless motor delivers stable and high performance using. The grinder tool brushless motor has longer life, shorter size, fasten response, lower noise, higher performance.
  • 【3 Speeds Setting & Adjustable Auxiliary Handle】 20V cordless grinder tool rear function panel can very easily control the speed with 3 options: Low, Middle, High. The soft rubber overmold adjustable auxiliary offers comfortable and stable working.
  • 【 Widely Used by Multiple Accessories】 This cordless grinder tool has attached with multiple accessories which includes cutting wheels, grinding wheels, flat wheels. Cutting wheels can use for cutting steel, stainless steel; Grinding wheels are suitable for grind edges and surfaces in aluminum, copper, stainless steel, or other different metal; Flat wheels with premium Zirconia grains are perfect for finishing work, deburing, and grinding by different type of metal.
  • 【 What You Get】 Enertwist ET-AG-20BL 20V Cordless Angle Grinder Tool, (1) 4.0Ah Lithium Ion Battery, (1) Fast Charger, (3) Cutting Wheels, (2) Grinding Wheels, (2) Flat Wheels, (1) Auxiliary Handle, (1) Wrench, (1) Manual, (1) 2-Year Warranty Card. Please feel free to contact us if you have any of the questions in future.
Bestseller No. 4
Milwaukee M18 2680-21P 4-1/2' Cordless Grinder Kit (2680-20 + 48-11-1850 + Charger)
51 Reviews
Milwaukee M18 2680-21P 4-1/2" Cordless Grinder Kit (2680-20 + 48-11-1850 + Charger)
  • Overload Protection- Prevents damage to the tool and battery in abusive situations
  • Debris Baffles - L-shape vents keep debris from entering the tool and damaging internal components to help increase tool life.
  • Tool Free, Burst Resistant Guard- Allows for quick, easy guard adjustments. 3-Position Side Handle- Provides optimal Control and Versatility
  • Paddle Switch Design- The only cordless cut-off /grinder in the market with a paddle switch design
  • Includes: (1) M18 4-1/2 inch Cut-Off/Grinder (Tool-Only) (2680-20), (1) M18 REDLITHIUM XC 5.0 Battery (48-11-1850), (1) M18 & M12 Multi-Voltage Charger (48-59-1812), (1) Guard
SaleBestseller No. 5
RIDA Cordless Angle Grinder , 20V 4-1/2'' Cut Off Tool , 10000RPM Variable Speed , 4.0Ah Lithium-ion Battery and Fast Charger, Dust Filter, 23Pcs Accessories
18 Reviews
RIDA Cordless Angle Grinder , 20V 4-1/2'' Cut Off Tool , 10000RPM Variable Speed , 4.0Ah Lithium-ion Battery and Fast Charger, Dust Filter, 23Pcs Accessories
  • 【Compact】[ BATTERY REPLACEABLE ] 4.0Ah Individual battery pack is compatible with all RIDA tools. ON SALE, ASIN: B08K8X38DXWheel Diameter-4-1/2, Tool Length-16 in, Weighing 4.88 pounds, weight/size ratio available , 2.4A fast charger , 20V 4.0Ah large capacity rechargeable lithium-ion battery with status indicator,compatible with all RIDA cordless power tools
  • 【Power】 7 Amp DC 10,000 rpm motor which provides the best power for professional cutting and grinding applications, 400W
  • 【Comfort】 Spindle Size-5/8",Spindle lock for easy change the wheels,3 position side auxiliary handle specifically designed for operator comfort
  • 【Safe and Durable 】Toolless cut off guard and protective hood providing safe operation , Dust Ejection System and Dust Filter System provides durability by ejecting and preventing dust and debris
  • 【3 YEARS Guarantee of Quality】 You will get : 1 x cordless angle grinder , 1 x 20V 4.0Ah lithium-ion battery , 1 x fast charger , 1 x auxiliary handle , 1 x toolless cut off guard , 1 x protective hood for grinding , 5 x grindling wheel , 5 x cutting wheel , 5 x abrasive paper , 1 x 5'' hook and loop sanding pad , 1 x spanner , 1 x user's manual , 1 x carry bag , Please contact us if you have any questions

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