8 Best Cordless Angle Grinder Review

Best Cordless Angle Grinder (1)

Cordless angle grinders are powerful and robust units that are capable of grinding metal, wood, and cement without any difficulty. They are equipped with powerful motors that can produce speeds ranging between 6000-10000 revolutions per minute. In addition to this, modern objects are also incorporated with electric brakes that can stop the wheels within 2 seconds when the grinder starts biting or kicking.

We have also observed the inclusion of kickback prevention, burst-resistant wheels, and spindle locks into the system that helps in replacing the required components and protecting you against the power of the motor. Thus, this article brings you the 8 best cordless angle grinders based on the braking system, burst-resistant wheels, spindle lock, battery life, motor power, and cost-efficiency. Along with this, a buying guide has also been integrated into the article for your convenience.

8 Best Cordless Angle Grinder

ProductRatingPrice
1. MILWAUKEE 2780-209.5
2. DEWALT FLEXVOLT9.6
3. PORTER-CABLE 20V 9.4
4. Makita XAG20Z 18V 9.3
5. CRAFTSMAN V20 8.8
6. Bosch GWS18V-45 8.6
7. Ryobi ZRP4219.2
8. Skil 20V9.2

1. MILWAUKEE 2780-20 M18 Fuel Angle Grinder – Battery-Powered Angle Grinders

Specifications

  • Dual batteries
  • Paddle-switch design
  • 2x runtime
  • Anti-vibration slide handle

MILWAUKEE 2780-20 M18 Fuel Angle Grinder is undoubtedly the best item on the list. Equipped with a powerful brushless motor, the system is capable of operating at the speed of 8500 revolutions per minute. Thus, providing you with utmost efficiency in minimum time. The product is 10 times stronger than its other industrial counterparts and does not disappoint you in any aspect.

In addition to a strong motor, a Redlink Plus Technology has also been integrated into the system and is tasked with maximizing the performance by reducing heat loss. This advanced technology also protects the model from overheating and increases its life to a great extent. We absolutely loved the inclusion of interchangeable batteries into the grinder, which allowed us to use it for extended periods of time.

This is especially useful when you are outdoors and might find it difficult to charge the equipment. As mentioned earlier, the cordless grinder consists of a powerful motor that leads to rapid battery drainage. So, interchangeable batteries come in handy during such instances. You can use one battery and charge the other at the same time to get outstanding results.

Apart from the above-mentioned attributes, another significant feature is the metal-based construction which imparts durability to the unit’s outer surface and protects it from getting damaged due to external factors. Thus, making it one of the best cordless angle grinders available in the market.

Pros
  • Lightweight
  • Less downtime
  • Tool-free accessory
Cons
  • Expensive
MILWAUKEE 2780-20 M18 Fuel Angle Grinder is highly popular among consumers due to its lightweight and enhanced portability, which makes it suitable for outdoor use. Similarly, the guard adjustment characteristic of the object decreases the downtime to a great extent and improves the overall working efficiency. Thereby making it worth the investment.

2. DEWALT FLEXVOLT Angle Grinder – Battery Operated Angle Grinder

Specifications

  • 1550W motor
  • Lever-type switch
  • App control
  • E-switch

DEWALT FLEXVOLT Angle Grinder is second to none when it comes to quality construction and unrivaled performance. The grinder is embedded with a kick brake system that adds five stars to its abilities and makes it suitable for a wide variety of consumers. The system automatically activates when the grinder starts biting. This is carried out by de-engaging the e-clusters.

The kick braking system protects the motor from getting damaged due to heavy pressure and overheating. Along with this, the powerful brushless motor is capable of generating fast speed, which drives the equipment to work at 9000 revolutions per minute. So, you do not need to worry about wasting your time. Instead, it helps you cut down the overall time spent on grinding activities to a significant level.

This also enables it to grind a variety of objects, including metal, wood, and cement, without any difficulty. What surprised us the most was the remarkable lithium-ion batteries that are 54% more efficient than others available in the market and possess extraordinary power retention abilities. We highly recommend purchasing this tool if you are looking for something which can last for extended hours with a single charge.

Furthermore, the e-switch incorporated in the equipment is highly useful in case of accidental shutdown or power outage. Thereby safeguarding it against damaging the internal components and relieving you from the underlying concerns regarding the durability and strength of the model.

Pros
  • Lightweight and compact
  • Effortless control
  • Remarkable durability
Cons
  • High price
DEWALT FLEXVOLT Angle Grinder never fails to amaze us with its top-notch construction and exceptional attributes. However, it is a bit more expensive than others of its kind and might require you to spend additional money in this regard. However, we assure you would not feel disappointed at purchasing the tool due to its extreme strength and long life.

3. PORTER-CABLE 20V MAX Angle Grinder Tool – Portable Angle Grinder

Specifications

  • Cast metal gear housing
  • Spindle lock
  • 20V maximum system
  • Tool-free guard

PORTER-CABLE 20V MAX Angle Grinder Tool is one of the most cost-efficient options on the list. Despite its low price, it is still a tough rival to top-notch products present in the market and does lags behind others in any aspect. You can use it for hours without worrying about battery drainage or performance inefficiency.

Thus, we highly recommend it for those that prefer performance-oriented yet budget-friendly tools. Similar to the Milwaukee angle grinder, this one is also capable of generating a speed of up to 8500 revolutions per minute and can get the task done in the minimum time. Therefore, it contributes to time efficiency, thanks to its powerful motor. We observed that the equipment was lightweight and did not put much stress on the wrist while working.

This is due to the properly balanced interior components of the unit that increases its comfort level and makes it suitable for beginners as well as experts. You can also replace the wheel without any inconvenience with the help of a spindle lock incorporated in the angle grinder. Thereby relieving you from the hassle of maintaining the components and bearing heavyweight.

Another advantage associated with this remarkable item is the ability to adjust the handle in multiple positions, which offers perfect grip and enables you to control it the way you desire. Last but not least, the handle guard safeguards you against injuring yourself while operating the grinder, especially when it starts biting or kicking.

Pros
  • Easy to control
  • Quick guard adjustments
  • Suitable for metal grinding
Cons
  • Heavyweight
PORTER-CABLE 20V MAX Angle Grinder Tool is one of the best objects included in the list of best cordless angle grinders. The substance has unparalleled power retention abilities that enable it to last longer than you expect. However, the battery and charger are not available with the main package and might need to be purchased separately.

4. Makita XAG20Z 18V Angle Grinder – Cordless Grinder With Battery

Specifications

  • Active feedback sensing technology
  • Manual RPM adjustment
  • 3X faster charging
  • 3 stage LED gauge

Makita XAG20Z 18V Angle Grinder is specifically designed for those that prefer robust and durable tools. These angle grinders are similar in performance to their previously mentioned counterparts and can last for a long time without displaying any inefficiency. Thus, we advise you to consider them as a potential option if you are looking for cordless angle grinders.

Displaying unparalleled metal and cement grinding abilities, the product is equipped with a strong brushless motor that can run at the speed of 8500 revolutions per minute, which is perfect for a unit of this size. We also observed that the system has an appropriate heat dissipation system that prevents it from overheating after continuous use.

Thus, relieving the consumers from concerns regarding the safety and performance of the object. Apart from this, a manual adjuster is also incorporated to enhance its flexibility and allows you to modify the speed and operation of the equipment as per requirement. Similarly, the automatic speed and torque adjustment is also an integral component of the equipment and is attributed to the specialized automated technology.

This enables it to work optimally throughout the session. You can also stop the paddle within seconds via an advanced braking system. This not only increases efficiency but also saves a lot of your time. Thereby allowing you to pay attention to other important tasks. Finally, the electronic torque control ensures that the wheels automatically stop when the grinder starts kicking or biting. Hence, it protects you from injuring yourself.

Pros
  • 50% higher runtime
  • Reduction in a jerky motion
  • Decrease in carbon brushes
Cons
  • Heavyweight
Makita XAG20Z 18V Angle Grinder is perfect for professional use due to its relatively faster speed and longer run time. Moreover, it is also integrated with a soft strat option that allows it to start slowly, thereby decreasing the jerky motion. This enhances the life of the substance and also leads to performance improvement.

5. CRAFTSMAN V20 Angle Grinder

Specifications

  • Cast-metal gear housing
  • Tool-free guard position
  • 3-position handle
  • Spindle Lock for disc changing

CRAFTSMAN V20 Angle Grinder ranks above all in terms of its design, price, and performance. It is ideal for both experts and beginners and offers the utmost efficiency in all aspects. We highly encourage you to consider this one if you are tight on budget but do not want to compromise on performance. Similar to traditional cordless grinders on the list today, this one is also capable of producing speeds up to 8500 revolutions per minute.

This speed is suitable for grinding a variety of materials, including metal, cement, and wood. In addition to this, a spindle lock is also embedded into the object, which enables you to change the disc into three different positions without any inconvenience. Thus, enabling you to change the discs effortlessly.

This coupled with the guard adjustment feature, adds five stars to the performance of the product and makes it stand out among the rest of the competitors. We absolutely admire the design of side handles and casting. The eccentric design naturally fits your hand shape and position and reduces the stress on your wrist. So, you can use it for longer time periods without getting tired or feeling irritated.

The thoughtful design has left a huge area for heat dissipation, which safeguards the model against overheating. Alongside this durable construction is also worth mentioning, which combines with a heat reduction system to protect the system against damage or harm. Hence, making it one of the best angle grinders on the list today.

Pros
  • Tool-free pad replacement
  • Well-balanced
  • Inexpensive
Cons
  • Lacks brushless motor
CRAFTSMAN V20 Angle Grinder is a suitable alternative to some high-priced cordless angle grinders available in the market. However, the tool is slightly larger and heavier than its other counterparts. But, we assure you that you would not feel any difficulty carrying it around with you daily.

6. Bosch GWS18V-45 18V Angle Grinder

Specifications

  • 10000 RPM
  • Two-position vibration control
  • Burst-resistant wheels
  • Electronic motor protection

Bosch GWS18V-45 18V Angle Grinder is an ideal option for those that prefer high speed without compromising the battery life. Due to higher speeds, the majority of the industrial angle grinder has power retention issues. However, this version of the Bosch cordless angle grinder has overcome this limitation and is capable of lasting for an entire day on a single charge.

So, you do not need to worry about recharging your equipment again and again for work. This also enhances its abilities for outdoor usage, which is the major concern for most consumers. Along with this, the feature which caught our attention is the motor which can reach up to 10000 revolutions per minute without increasing the load over the system.

This protects it from overheating or getting damaged due to maximum load. The manufacturer has put in much consideration for users as well and has incorporated a burst-resistant wheel guard into the system. This safeguards you against the motor power and is associated with power cut-off in case of a system shut down.

It usually occurs when you run out of power and need to reconnect the battery. However, you might have to switch it on again since it does not provide an automatic restart. Furthermore, the spindle lock is responsible for aiding in component and disc replacement and makes the task a lot easier for the consumers.

Pros
  • Hassle-free control
  • Lightweight
  • Improved flexibility
Cons
  • Slide switch
Bosch GWS18V-45 18V Angle Grinder is the fastest product on the list of best cordless angle grinders and features a slide switch functionality. This relieves you from the trouble of holding the switch while working and is appropriate for longer tasks. Although it is not the best for quick cuts, it shows satisfactory results in this regard and can be used for smaller tasks as well.

7. Ryobi ZRP421 ONE Plus 18V Angle Grinder

Specifications

  • Dual battery
  • Tool-free guard
  • 3-position slide handle
  • 3-year warranty

Ryobi ZRP421 ONE Plus 18V Angle Grinder is another budget-friendly alternative for a wide variety of consumers. Constructed using high-quality materials, the model is resilient and robust and does not gets damaged easily. Thus, you can use it for years without any performance inefficiency or power issues.

It is equipped with more than one battery and thus, can be used for outdoor applications. The battery also possesses exceptional power retention abilities and can be used in turns to maximize efficiency. Additionally, the powerful motor is capable of generating up to 6500 revolutions per minute and allows you to grind a variety of tough and hard materials within minutes.

You can slice through metal and wood pieces without any difficulty. The remarkable design of the substance, along with its lightweight, does not put stress on your wrist and protects you against potential injuries in this regard. The ergonomic construction of the tool ensures an effortless grip that prevents the handle from slipping out of your hand while working.

We also admire the adjustable 3-position side handle that can be removed from the system depending on the requirement and contributes to better performance. Last but not least, it is inexpensive and is available at an extremely low price. Thus, if you are unable to afford top-notch angle grinders, we encourage you to consider this as a potential alternative.

Pros
  • Durable construction
  • Flexible
  • Budget-friendly
Cons
  • Not the most powerful motor.
Ryobi ZRP421 ONE Plus 18V Angle Grinder lives up to its reputation as one of the powers and energy-efficient cordless angle grinders. However, the battery and charger are not available with the main package. Instead, they need to be purchased separately and might require additional investment for this purpose.

8. Skil 20V 4-1/2 Inch Angle Grinder

Specifications

  • PWRCore 20 Lithium battery
  • 3-position slide handle
  • Dual function-lock on the switch
  • Temperature management system

Skil 20V 4-1/2 Inch Angle Grinder is manufactured by the Skil, which is renowned for its budget-friendly yet performance efficient and durable products, and this version is not an exception. Thanks to the ergonomic design and high-quality materials, the equipment is durable and sturdy and can last longer than you expect.

Therefore, you do not need to be concerned about the safety of the grinder. Along with this, we highly recommend it for beginner use due to the effortless control and strong grip, which reduces the chances of slipping during work. You can grind a diverse range of materials using this item. We assure you would be surprised at the results.

Besides this, the lithium-ion battery incorporated in the system is capable of providing an unlimited power supply for a long time with a single charge. Thereby relieving you from the concerns of losing power when using it outdoors. A special cooling system is also included in the model to ensure better heat dissipation.

It prevents the grinder from overheating after continuous use. Another prominent attribute possessed by the tool is the powerful motor that can speed up to 8500 revolutions per minute effortlessly and helps in achieving the desired results. Hence, making it our ultimate recommendation for those that prefer budget and energy-efficient units.

Pros
  • Fast charging
  • Wear and tear reduction
  • Decrease in jerky motions
Cons
  • Not for professional use
Skil 20V 4-1/2 Inch Angle Grinder contains a dual function lock-on switch which prevents it from automatically restarting. So, you can be relieved from the concerns of injuring yourself in case of an accidental start. In addition, the grinder can automatically shut off when it starts biting or kicking. Thus, ensuring your safety in all conditions.

Factors to Consider While Purchasing the Best Cordless Angle Grinders

There are a diverse variety of factors that should be carefully taken into account while purchasing cordless angle grinders for yourself. Despite your skill level, these elements can have a significant impact on the performance of the object and can lead to accidental mishaps and loss in case of negligence.

They include handling and control, ease of use, Motor abilities, battery life, and safety attributes. We have discussed all these factors in detail for your convenience. So, keep reading for more information on how to select the best cordless angle grinder for yourself.

Handling and Control

First and foremost, handling and control are of great significance while using an angle grinder. So you should carefully analyze the grip and design of the unit to prevent issues in the master stages. We also recommend observing the weight and length of the model as it can have a significant impact on the performance. You can choose grinders that are lightweight and relatively smaller in size.

This allows you to carry them easily, especially if you are a beginner. To prevent the stress buildup on your wrist, it is advised to go for a machine with ergonomic attributes. Handles that can naturally fit your hand position and shape are ideal in this regard. They not only prevent wrist pain but also make it easier to carry it around.

Ease of Use

Next up on the list is the ease of use. After all, you are going to use the unit for a long time. In between, you will face a lot of problems with the disc and other components and might also need to replace them. Using a grinder that provides a spindle lock feature is a wise choice. The spindle lock is characterized by the effortless replacement of the disc and can improve the overall working efficiency to a great extent.

Apart from this, a 3-position handle and manual speed adjusters are other prominent features that offer hassle-free control over the product. The adjustable handles contribute to flexibility which makes it easier to operate the substance. You should also look for grinders that are associated with tool-free charging abilities. This not only contributes to time efficiency but also makes the procedure relatively simpler and effortless.

Motor Power

Motor power refers to the ability of the motor to reach a certain speed. Most of the highly efficient tools are capable of reaching up to 8500 revolutions per minute. However, there are other top-notch tools as well that can attain 10000 revolutions per minute. Such grinders can get the task done in the minimum time and are perfect for professional applications.

Apart from this, brushed motors are capable of generating higher speeds as compared to the brushless motor but can overheat relatively easily. So, you should carefully analyze whether you want to purchase a brushed or brushless motor. Brushless motors lack carbon brushes, so they can remain cool for a long time and lead to a marked reduction in overheating.

Battery Life

One factor that can never be neglected in the case of cordless items is battery life. Trust me; you do not want to buy a tool that requires a recharge after every four hours. It is advised to go for those grinders that can run for the whole day on a single charge. This contributes to energy efficiency and enhances the overall performance to a great extent.

Lithium-ion batteries are highly efficient for these purposes as they possess remarkable power retention abilities. Furthermore, they can also charge faster than their other counterparts and are highly recommended for professional use. Cordless angle grinders with dual batteries are highly preferred because they can be used in turns for best results and save a lot of your time.

Safety Attributes

Last but not least, safety while using an electronic device is of great importance. Especially if your system is incorporated with a powerful motor and is capable of generating higher speeds. Usually, burst-resistant technology is installed in modern units to protect you against motor power. Other safety features include automatic shut-off when the grinder starts biting or kicking.

Thereby safeguarding you from injuring yourself in the long term. Other significant protective characteristics in this regard include electric brake, kickback prevention, and soft start. Soft start prevents jerky motion when the finder restarts, while the electric brake enables you to stop the wheels within 2 seconds to protect yourself from injury or harm.

Price

Apart from the above-mentioned features, you can also consider the price of the cordless angle grinder while purchasing it. It is advised to analyze your budget and carefully calculate all the other factors so that you should have a clear understanding of the type of product you require. At the end of the day, you do not want to overstrain your budget.

Thus, we recommend you look for possible performance-oriented alternatives if your target unit is expensive. There are a wide variety of budget-friendly angle grinders available in the market that contain powerful motors and do not compromise battery life. So, you do not need to worry about the efficiency of low-priced items. Just check all the attributes mentioned above and choose your ideal cordless angle grinder for both personal and professional use.

Frequently Asked Questions

1. How long does it take to recharge an angle grinder battery?
The recharging abilities and time depend on the size and type of battery. Lithium-ion batteries charge relatively faster than their other counterparts and have better power retention abilities. Furthermore, the power of the charger is also of great importance and can contribute to improved charging efficiency.

2. Are cordless angle grinders better than corded models?
Both corded and cordless angle grinders have their own pros and cons. However, we suggest going for a cordless model as it is portable in nature and is highly useful for outdoor purposes. However, you will have to consider battery life and charging time for this purpose as they are the limitations of most cordless models.

3. What is the largest wheel I can install on an angle grinder?
The insertion of wheels greatly depends on the specifications of the unit. However, the majority of the grinders are integrated with wheels ranging up to 4 to 5 inches in size. However, you can always search for larger and smaller wheels depending on the type of material you are using.

Wrapping Up

Cordless angle grinders have gained recognition over the years due to their portability, improved battery life, powerful brushless motors, electric brakes, soft start, kickback prevention, and much more. Based on these characteristics following are our top three recommendations for the majority of the consumers.

Hence, we highly recommend it to those that are looking for the best cordless angle grinder in 2021.

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