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DeWalt Hedge Trimmer 20V vs. 40V: Which is Better?

DeWalt Hedge Trimmer 20V vs. 40V: Which is Better?

Are you looking for a powerful and reliable hedge trimmer to tackle your garden? If so, then look no further than DeWalt’s 20V and 40V hedge trimmers. Both models feature the same ergonomic design with comfortable grip handles, but they differ in terms of power output and battery life. So which one is better? To help answer this question, we will compare their features side-by-side so that you can make an informed decision on which model best suits your needs. Read on to find out more about DeWalt’s 20V vs 40V hedge trimmers and decide which one is right for you!

DeWalt Hedge Trimmer 20V

The DeWalt 20V hedge trimmer is a lightweight yet powerful tool ideal for tackling most jobs around the garden. It boasts a powerful motor and a durable design that makes it easy to maneuver in tight spaces. With dual-action blades, this model is capable of delivering up to 2,000 strokes per minute, making it perfect for quick, precise cuts. It also has a longer runtime of up to 30 minutes when used with the 20V MAX battery, and its lightweight design reduces fatigue during prolonged use.

Pros of DeWalt Hedge Trimmer 20V

The DeWalt 20V hedge trimmer is lightweight and easy to maneuver, making it a great choice for those with smaller yards or gardens. It also features an impressive battery life of up to 30 minutes on a single charge, so you won’t have to worry about your battery running out in the middle of trimming your hedges. The 20V model also has a variable speed trigger, so you can adjust the speed of the trimmer to suit your needs.

Pros of DeWalt Hedge Trimmer 20V

Cons of DeWalt Hedge Trimmer 20V

  1. The DeWalt Hedge Trimmer 20V is not as powerful compared to the 40V counterpart. This means that while it can tackle smaller hedge trimming jobs, it may struggle more when confronted with thicker branches or larger hedges.
  2. The battery life of the 20V model is shorter than the 40V version. This means that you will need to ensure the hedge trimmer is fully charged before doing any large trimming jobs and may need more frequent battery replacements for longer projects. [1]

DeWalt Hedge Trimmer 40v

The DeWalt Hedge Trimmer 40V is the most powerful of the two models. It has a motor with double the power output, meaning it can cut through thicker branches with ease. This model is also more durable and has a longer run time due to its larger battery capacity. In addition, this hedge trimmer comes with an “Easy Load” feature that allows you to load and unload the trimmer without having to remove it from the shaft.

Overall, the DeWalt Hedge Trimmer 40V is ideal for those who are looking for a powerful tool that is built to last. Its extra power output and longer run time make it well suited for larger yards or more challenging pruning jobs. However, due to its higher cost and weight, this model may not be the best choice for those with limited budgets or who simply need a basic tool. Ultimately, the DeWalt Hedge Trimmer 40V is an excellent choice for those looking for a powerful and reliable trimmer that can tackle tough jobs.

Pros of DeWalt Hedge Trimmer 40v

The 40V DeWalt Hedge Trimmer is a powerful, efficient tool that can get the job done quickly and easily. It has a longer run time than the 20V model so you can trim hedges for extended periods of time without having to recharge your battery. Additionally, it features an ergonomic design to reduce fatigue when using it for extended periods of time. In addition to its ergonomic design, the 40V model also includes a variable speed trigger for improved control and accuracy when trimming hedges. Furthermore, it features a dual-action blade system that enables you to cut branches from both sides simultaneously without having to flip the trimmer over.

Pros of DeWalt Hedge Trimmer 40v

Cons of DeWalt Hedge Trimmer 40v

The main disadvantage of the DeWalt 40v hedge trimmer is the price. It costs significantly more than the 20v model and may be out of reach for some budgets. Additionally, it’s larger and heavier, making it more difficult to maneuver in tight spaces or on uneven terrain. The blade also requires more frequent sharpening due to its size, and the battery life is not as long as that of the 20v model. For those who don’t need a powerful trimmer or only use it occasionally, the extra cost and size may not be worth it. [2]

DeWalt Hedge Trimmer 20V vs. 40V: Differences

When it comes to trimming your yard, DeWalt Hedge Trimmers offer a powerful solution that can get the job done quickly and efficiently. But there are two models available: the 20V and 40V. What are the differences between these two hedge trimmers, and which one is better for you?

Bar And Chain Size

The main difference between the DeWalt 20V and 40V hedge trimmers lies in the bar and chain size. The 20V model has a 16-inch bar and chain, while the 40V uses a larger 18-inch bar and chain. This makes the 40V suitable for larger jobs with denser vegetation, while the smaller size of the 20V makes it more suitable for smaller jobs and lighter vegetation.

Cutting Capacity

When it comes to cutting capacity, a DeWalt hedge trimmer with a 20V battery may be able to handle more small branches than those with 40V batteries. This is because the 20V trimmers are lighter and easier to maneuver around branches at a closer distance, making for cleaner cuts and less strain on your arms. That said, if you are looking for a trimmer that can handle larger branches, the 40V battery will provide more power for thicker branches and higher capacity of cutting.

Weight And Ease Of Use

When deciding between the 20V and 40V DeWalt hedge trimmer, weight and ease of use should also be considered. The 40V model weighs slightly more than the 20V model due to its larger battery, but it is still relatively lightweight compared to other hedge trimmers on the market. However, if you are looking for a lightweight trimmer to make trimming your hedges easier, the 20V Hedge Trimmer may be the better option.

Weight And Ease Of Use

Price And Warranty

When it comes to budget, the DeWalt 20V Hedge Trimmer is more cost-effective than its 40V counterpart. The 40V version might set you back as much as double what the 20V would. In addition to being more expensive, the 40V trimmer is also covered by a slightly shorter warranty period when compared to the 20V trimmer. The 20V version is covered by a 3-year limited warranty while the 40V one only has a 2-year limited warranty. Therefore, when it comes to price and warranty, the DeWalt 20V Hedge Trimmer is a clear winner. [3]

Cord And Hand Guard

The DeWalt Hedge Trimmer 20V and 40V are both equipped with a cord and hand guard. This is designed to protect your hands while you trim away at hedges and shrubs. The cord guard also helps ensure that the trimmer’s power supply remains safe from any debris or tangled branches. The 40V model has a longer cord guard than the 20V, which gives it added protection and helps to keep your hands out of harm’s way. The hand guards are both ergonomic and comfortable, making them easy to use over lengthy trimming sessions. The 40V model also features more durable material, which ensures that your trimmer stays protected from the elements.


The DeWalt 20V and 40V hedge trimmers are both equipped with a self-lubricating motor. This means that the motor is designed to automatically lubricate itself for long lasting performance, so you don’t have to worry about manually lubricating it. Both models provide excellent cutting power, ensuring that your hedges get the job done quickly and efficiently.


The DeWalt Hedge Trimmer 20V and 40V both feature low-kickback dual-action blades. This type of blade has two opposing curved teeth that meet in the middle, allowing for a sharp cut with minimal force required from the user. The advantage of using a low-kickback blade is that it reduces the risk of injury by cutting with minimal force and vibration.


The DeWalt Hedge Trimmer 20V and 40V models both feature powerful motors that are designed to cut through almost any type of hedge. The main difference in the motor power between these two trimmers is the amount of voltage each one has. The 20V model has a maximum motor power rating of 200 watts, while the 40V model has a maximum motor power rating of 400 watts. This means that the 40V trimmer will be able to cut through thicker and more dense hedges with ease, while the 20V model may struggle or take longer to do so.

Chain Tension Adjustment

Both the DeWalt 20V and 40V models offer easy chain tension adjustment for cutting thick branches and stems. The thumbwheel on both models is conveniently located, so you don’t have to stop and search for it when making adjustments. On the 40V model, however, the thumbwheel has a larger diameter, allowing for even easier chain tension adjustment. This makes it the preferred choice for those working with thick branches and stems. [4]

Chain Tension Adjustment


Is 20V better than 40V?

This depends on the intended use. The 40V models have a higher power output and are designed for more demanding tasks, such as trimming thicker branches. If you don’t need that extra power, then the 20V model might be a better choice as it is more lightweight and easier to handle. Additionally, it will cost less than the 40V model, making it a great value if you only need basic trimming capabilities. Ultimately, the decision comes down to your needs and budget. Also, it is important to consider your local environment when deciding which hedge trimmer is best for you as power output may vary depending on where you live.

How many volts should a hedge trimmer be?

When considering which type of hedge trimmer to purchase, the power of the motor is an important factor to consider. A hedge trimmer with more volts will have more power and can handle thicker branches than one with fewer volts. So when comparing a DeWalt Hedge Trimmer 20V vs. 40V, it’s important to understand the difference in power between the two. The 20V version is a smaller, more compact model and is best suited for trimming small shrubs or thin branches up to ¾ of an inch thick. It has enough power to get the job done, but it may take longer than using a more powerful model. However , if you have thicker branches to trim, the 40V model is a better option as it has more power and will complete the job faster.

It can handle branches up to 1 ½ inches thick without any trouble. In conclusion, when comparing DeWalt Hedge Trimmer 20V vs. 40V, it really comes down to what size of branch you plan on cutting. The 20V model is great for small jobs and thin branches but won’t be able to handle thicker ones very well. For bigger tasks or heavier-duty jobs, the 40V model is a better choice as it offers more power and can get through even tougher jobs quickly and efficiently. Both models come with a warranty so no matter which one you choose, you’ll have peace of mind knowing you’re covered in case something does go wrong.

How long does a 20 volt battery last on a hedge trimmer?

The answer to this question largely depends on the size and type of hedge trimmer in question. Generally speaking, a 20 volt battery will last around an hour when using a light duty hedge trimmer. For heavier duty models, the battery life could be less than half that amount. It is important to note that the actual runtime of the battery will depend on the type of hedges being trimmed, as well as the frequency and duration of use. To get an accurate estimate for your specific hedge trimmer, it is best to contact the manufacturer for more information.

Does Dewalt make a 40V hedge trimmer?

Yes, Dewalt does make a 40V hedge trimmer. The Dewalt 40V MAX Hedge Trimmer is part of their XR Lithium-Ion product line and offers an extended runtime compared to its 20V counterparts. It has a cutting capacity of 3/4″ diameter branches and comes with a 22″ dual action blade that provides a clean, precise cut every time. The 40V MAX hedge trimmer also has an improved ergonomic design with variable speed trigger and wraparound auxiliary handle that provide more comfort and control while you are trimming your hedges. With the ability to run up to 16 hours on a single charge, the Dewalt 40V MAX Hedge Trimmer is an ideal choice for those who need to trim their hedges quickly and efficiently.

Does Dewalt make a 40V hedge trimmer?

How long does the battery last on a Dewalt hedge trimmer?

The battery life of a Dewalt hedge trimmer depends on the model and power level. The 20V models typically have a run time of up to 60 minutes, while the 40V models usually have a run time of up to 90 minutes. This makes the 40V model ideal for use in larger gardens or yards as it provides more than enough power to get the job done. Additionally, both models feature a high capacity battery pack that can be recharged in less than an hour, giving you plenty of time for efficient trimming tasks.

Which is better: battery or gas hedge trimmer?

When you’re looking for the best tool to trim your hedges and shrubs, the two biggest questions you need to ask yourself are: battery or gas? While each has its own advantages and disadvantages, DeWalt offers both types of hedge trimmers, in 20V and 40V models. Gas hedge trimmers are heavier and more powerful but require more maintenance, while battery powered models do not require any fuel or oil. Also, battery powered models are lighter and more portable. However, battery powered hedge trimmers usually have shorter runtime and limited cutting capacity. To help you decide which model is the better choice for your needs, let’s take a look at DeWalt’s 20V vs 40V models. The 20V model from DeWalt is designed for light to medium trimming jobs, and its cutting capacity is up to 5/8 of an inch in diameter. Its cutting speed is about 4,800 strokes per minute, and it has a run-time of up to 75 minutes on a single charge with a 2Ah battery.

Is more volts better for power tools?

The answer to this question depends on the particular tool and its intended use. Generally speaking, the more volts a power tool has, the more powerful it is. However, increased voltage also often results in increased weight and size of the tool. For hedge trimmers specifically, DeWalt offers models powered by both 20V and 40V batteries. The 20V model is lighter, easier to maneuver in tight spaces, and more affordable than its 40V counterpart. On the other hand, the 40V model provides significantly higher cutting power for larger projects.

How do I choose a good hedge trimmer?

When choosing a good hedge trimmer, it’s important to consider the size of your hedges and the type of trimming job you plan to do. If you’re just looking for something to quickly clean up some small shrubs or bushes, then a cordless electric trimmer may be enough. However, if you need to regularly trim large hedges that are over 6 feet tall, then it would be wise to purchase a more powerful gas-powered machine. Another factor to consider is the type of battery or fuel that powers your trimmer. The DeWalt line offers both 20V and 40V models, so it’s important to decide which one will best meet your needs. Generally, the 40V models are more powerful and can handle larger jobs, while the 20V models are lighter and easier to carry around. When it comes to selecting a DeWalt hedge trimmer, you should also consider the blade length. Longer blades offer greater reach, making them ideal for trimming harder-to-reach areas of your yard or garden. Additionally, look for a model with adjustable speed settings so that you can control how fast or slow the trimmer is running. Finally, take note of any additional features like cutting guards to help protect you from flying debris or an ergonomic design for comfortable handling over long periods of time. With all these factors in mind, you’ll be sure to find the best DeWalt hedge trimmer for your task.

How do I choose a good hedge trimmer?

How long does a 40V 4.0 Ah battery last?

The 40V 4.0 Ah battery from DeWalt is efficient and powerful, allowing for plenty of runtime on a single charge. Depending on the type of material that needs to be cut and the size of the job, users can expect to get anywhere from 60 minutes up to over two hours of work time out of a single charge. The 20V 2.0 Ah battery will run for approximately half as long as its bigger brother, with 30 minutes to an hour being the expected performance level. In order to maximize your efficiency when using either model, consider investing in extra batteries or purchasing one with a higher voltage rating so that you can switch out batteries quickly instead of waiting for them to recharge. This will help keep your projects on schedule and ensure that you don’t run out of power in the middle of a job.

What happens if I use a 40V battery on a 20V tool?

Using a 40V battery on a 20V tool will not cause any damage to the tool, but the performance of the tool may be compromised. The voltage of a battery is directly related to its power output and using a higher voltage battery on a lower powered tool can lead to decreased performance. For example, with a DeWalt hedge trimmer, using a 40V battery will result in less torque being produced by the motor which means it won’t cut as efficiently or quickly as it would with the recommended 20V battery. Additionally, using an incorrect voltage battery can also shorten the life expectancy of your tool’s motor as it works harder to achieve the same results. Therefore, for optimal performance and best results from your DeWalt hedge trimmer, it is always recommended to use the correct voltage battery as specified in the tool’s instructions.

Useful Video: Ryobi 40V Pole Trimmer vs. Dewalt 20V | Commercial Review


In conclusion, choosing between the DeWalt 20V and 40V Hedge Trimmer is largely a matter of personal preference. If you’re looking for a lightweight and relatively quiet trimmer for smaller jobs, the 20V model might be the best choice for you. However, if you’re looking for a more powerful machine that can handle larger areas with thicker branches, then the 40V model may be worth considering. Both models have their advantages and disadvantages, so it’s important to consider your own unique needs when deciding which one to purchase. Ultimately, no matter which model you choose, both will get the job done quickly and efficiently – making either of these hedge trimmers an excellent choice!


  1. https://thefinalkit.com/dewalt-20v-vs-60v-trimmer/
  2. https://www.drillanddriver.com/dewalt-20v-vs-40v-hedge-trimmer/
  3. https://shedheads.net/best-hedge-trimmer/cordless/
  4. https://toolguyd.com/cordless-lawn-garden-tools-best-voltage/