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Dewalt DCHT820B Review

Looking for the best hedge trimmer? Look no further, because the DEWALT DCHT820B is sure to impress. This powerful machine can handle even the thickest of hedges with ease. But before you buy one, be sure to read our comprehensive guide. In this article, we will answer all of your questions and provide some useful tips to help you get the most out of your new hedge trimmer.

DEWALT DCHT820BThe DEWALT DCHT820B is an electric hedge trimmer designed for cutting thick hedges. It has a powerful 20V battery powered motor. The trimmer also features double-sided laser-cut blades with an impressive 22” blade length, making it easy to trim even the tallest of hedges. Furthermore, the DCHT820B’s ergonomic handle and featherlight design make it both convenient to use and effortless to maneuver.


  • Color Black/Yellow
  • Dimensions LxWxH38.66 x 9.42 x 7.87 inches
  • Weight 8.8 Pounds
  • Battery Powered


The trimmer is a powerful and durable machine that can get any job done. Its 20V battery powered motor provides plenty of power to cut through even the thickest branches with ease. The ergonomic handle and lightweight design also make it comfortable to use for long periods of time without fatigue. In addition, the double-sided laser-cut blades provide an even cut every time and are designed to last for years of use.

For added convenience, the DEWALT DCHT820B also comes with an extra 20V battery so you can always have one charged up while using the other.

Table of Contents

Dewalt DCHT820B Hedge Trimmer User Manual

Having problem? Download DEWALT DCHT820B 20v Max Hedge Trimmer instructions.

Pros & Cons of Dewalt DCHT820B

  • Cuts up to 3/4-inch thick
  • Well-balanced
  • 22-inch laser cut, hooked-tooth blade design
  • Compact and lightweight design
  • Part of the 20V max system of tools

  • Doesn’t include the sheath
  • Lacks information on accessories needed to use

Buyer’s Guide

What kind of vegetation will you be cutting?

The DEWALT DCHT820B is equipped with a 22-inch dual-action blade that can easily cut through most shrubs and hedges. It is suitable for light, medium, and thick vegetation. If you’re looking to tackle larger branches or limbs, you may want to opt for a more powerful model.

Choosing your power type

When it comes to powering your hedge trimmer, you can either opt for battery or corded. DEWALT DCHT820B offers both options so you can choose the one that suits your needs best.

The battery-operated version comes with a 20V Lithium Ion 5Ah battery and charger.

The battery is compatible with all DEWALT 20V Max tools, which means you won’t have to buy a new one if you already own other products from their range. With its lightweight design and long run time, this will give you the freedom to work wherever and whenever you need without worrying about finding an electrical outlet nearby.

Choosing your power type

On the other hand, if you prefer a more powerful option then the corded version is a better choice. This one comes with an 8-amp motor that is designed for tougher tasks and can easily cut through branches up to 3/4 inch thick. The 6-foot power cord gives you plenty of room to move, so you won’t have to be tethered while trimming.

Corded hedge trimmers

Corded trimmers are the most common type of hedge trimmer. They have a long cord that you plug into an outlet, which gives them the power to cut through thicker branches and tougher shrubs. Corded models are typically powered by electric motors, making them easier to maneuver and control than gas-powered trimmers. They’re also usually lighter in weight, so they’re less of a strain to use for extended periods of time. The downside is that you’ll need to be close to an outlet while using it, but if you have large hedges or shrubbery these are probably your best bet. Just make sure you purchase one with enough power and length for your needs!

Cordless hedge trimmers

Cordless trimmers are the most convenient way to groom your hedges. They offer a great deal of freedom and flexibility when it comes to trimming and shaping your garden hedges, as they eliminate the need for a long cord that can easily be tangled or caught up in nearby plants or shrubs. Cordless hedge trimmers also tend to be lightweight, making them easy to maneuver around difficult areas or larger bushes and shrubs. Many models come with rechargeable batteries, giving you plenty of time to get all your pruning done without having to worry about running out of juice mid-way through the job. Most cordless models are also quiet and produce minimal vibrations – perfect for keeping disturbances at bay in more sensitive residential neighborhoods. So if you’re looking for a convenient and hassle-free way to keep your hedges in check, cordless hedge trimmers are the way to go!

Petrol hedge trimmers

Petrol trimmers are an essential tool for any garden maintenance job. They provide a clean, efficient way to trim and shape hedges, and can be used on bushes of any size or height. They have several advantages over electric models: they have more power, so they can cut through thicker branches; they’re more portable, as you don’t need access to an electrical outlet; and their fuel tank allows them to run for longer before needing a refill. Ensure to check out the range of models available, as well as their weight and balance. You should also consider safety features such as anti-vibration handles and blade guards. With the right model, you’ll be able to easily and safely maintain your garden hedges. [1]

Choosing the right trimmer for your hedge

Trimming your hedge can be a time-consuming job, but it’s an essential part of keeping your outdoors looking neat and orderly. But with so many different trimmers on the market, how do you choose the right one for you?

The most important thing to consider when choosing a hedge trimmer is the size of your hedge. If you have a small hedge, then a smaller trimmer with shorter blades will work fine. However, if you have larger hedges then it’s best to go for something with longer blades, as this will make trimming easier and quicker. You also want to think about how powerful the motor is – the more powerful the motor, the faster and more efficient it will be at cutting through thick branches.

Choosing the right trimmer for your hedge

Another important thing is the weight of the trimmer. If you’re going to be using it for long periods of time, then you want something lightweight so that you won’t get fatigued easily. You should also look at the type of blades used – some come with serrated edges which make cutting easier but will dull quicker than a standard blade, whereas others might have special features such as an anti-jamming system or a telescoping handle to help reach higher branches.

Finally, think about how easy the trimmer is to use and maintain – look for one with simple instructions and parts that are easy to replace if they break. Safety should also be considered here – choose one with a shield to protect you from flying debris, and if possible opt for one with an electric start or an automatic stop system.

By taking all these factors into account, you can rest assured that you’ll be able to find the perfect trimmer!

Professional hedge trimmers

Professional trimmers can save you time, money and effort. They offer more power than manual trimmers and make it easier to get the job done quickly and with precision. With a range of cutting speeds and adjustable blades, professional hedge trimmers are ideal for tackling tough jobs around the garden or landscaping projects. Plus, some models come equipped with advanced features like vibration reduction technology and safety locks that ensure your safety while you work. Whether you’re looking for something basic to trim a few shrubs or need a powerful tool to tackle larger tasks, there’s sure to be an option that meets your needs. So what are you waiting for? Get yourself a professional hedge trimmer today — you won’t regret it!

Portable hedge trimmers

Portable hedge trimmers are must-haves for any homeowner or garden enthusiast. Whether you’re tackling a large job or just need a quick touch-up, these handy devices can make the task a breeze. Choose from cordless versions for maximum portability or electric models with more power and longer run times. And with advanced safety features like blade guards and anti-kickback systems, you can work confidently knowing that you’ll remain safe while you prune away! So don’t let overgrown shrubs ruin your outdoor aesthetic – get one of these great trimmers today and make your yard look its best.

Corded hedge trimmers

Corded hedge trimmers are a popular choice for avid gardeners and landscapers alike. They provide excellent power and control, so you can tackle larger hedges with ease. Some models even offer adjustable cutting widths, giving you the flexibility to trim your hedge any way you want. Plus, corded models are usually cheaper than their cordless counterparts, making them an ideal option for people on a budget. And because they don’t require batteries or fuel cells to run, you won’t have to worry about running out of juice in the middle of your job! With a reliable corded trimmer, you can rest assured that your hedges will look neat and tidy all year round.

So if you’re looking for a tool that provides plenty of power and doesn’t break the bank, corded hedge trimmers are definitely worth considering.

Hedge trimmer features

A hedge trimmer is one of the most important tools for any homeowner. Hedge trimming can be a tedious and time-consuming task, but with the help of hedge trimmers you can quickly keep your hedges looking neat and tidy. Here are some of the features to look out for when buying a hedge trimmer:

  • Electric or gas-powered: Electric trimmers tend to be more convenient, as they don’t require fuel like gas-powered ones. They are usually lighter with less vibration than their gas counterparts, making them ideal for smaller tasks.
  • Blade length: Most hedge trimmers come in blade lengths ranging from 6-14 inches (15-35 cm). Longer blades make it easier to reach higher branches, so consider this when choosing a hedge trimmer.
  • Blade type: Most hedge trimmers have either a dual-action or single-action blade. Dual action blades are designed to cut on both the up and down stroke, making them ideal for tougher branches. Single action blades, however, only cut on the upstroke and are better suited for more delicate hedge trimming tasks.
  • Adjustable handle: An adjustable handle can make it easier to reach awkward angles or hard-to-reach places in your garden. Many hedge trimmers also come with an ergonomic design to make them easier and safer to use.
  • Safety features: A good hedge trimmer should always be equipped with safety features such as a blade guard, trigger lock and anti-vibration technology. These features help to make sure that the trimmer is used safely and effectively. [2]

With these features in mind, you should have no problem finding a hedge trimmer that works best for your needs.

Hedge trimmer blade types

There are several different types of blades for a hedge trimmer. The most common blade type is the dual-action blade, which features two reciprocating blades that move in opposite directions to make cutting faster and easier. This is usually the best choice for trimming smaller hedges where accuracy is important.

Hedge trimmer blade types

You can also find rotary blade models that use high-speed rotating blades to make cutting through bigger, denser hedges much quicker. Another option is the single-sided blade, which uses a single straight edge with serrated teeth to tackle larger hedges in one pass. Whichever type you decide on, be sure to pick up an accessory kit so you have everything you need to keep your hedge trimmer running smoothly!

Hedge trimmer operation

Once you have set up your hedge trimmer, it is time to start using it. To ensure a safe and successful trim, follow these steps:

  • Put on the correct safety gear. This includes protective eye goggles or glasses, as well as gloves and long pants.
  • Start the engine. Most hedge trimmers are equipped with either a two-stroke or four-stroke gasoline engine that needs to be started before use. Read the instructions manual for more detailed instructions about starting the engine of your specific model of hedge trimmer.
  • Adjust the cutter angle if necessary – some models allow for adjustment of the blades to make trimming easier in tight spots or around curved edges.
  • Hold the trimmer with both hands and start trimming. Always make sure to keep your arms in a comfortable position, and never force the blade through obstacles like branches or stones.
  • Move the blades slowly but steadily across branches or foliage. Keep the blades close to the surface of whatever you are cutting so that it is cut evenly and neatly.
  • After finishing one area, switch off the engine and wait for all moving parts to stop completely before continuing with another area!
  • It is also important to maintain your hedge trimmer regularly – make sure to check that all parts are free from dirt and debris, sharpen blades when necessary and replace any worn out parts as soon as possible.
  • When you are finished, store your hedge trimmer in a safe and secure area to protect it from damage or theft.

Following the steps above will help ensure that you get the best out of your hedge trimmer and keep it in top condition for years to come!

How does a hedge trimmer work?

Hedge trimmers work by rapidly moving a set of sharp blades back and forth to cut through branches. The blades are powered either electrically or via gasoline, depending on the type of hedge trimmer being used. Electric models typically require an extension cord while gas-powered versions offer greater range and maneuverability.

When using a hedge trimmer, it is important to wear protective clothing such as long pants, closed-toe shoes, safety glasses, and gloves to protect from debris that may be thrown back at you during use. It is also important to avoid cutting branches thicker than the blade can handle as this could damage the motor or cause other safety issues.

Everything you’ll need to finish the job

When it comes to hedge trimming, you’ll need the right tools to get the job done effectively and safely. Aside from a hedge trimmer, you will also need:

  • Protective gear such as eye protection, gloves and long pants
  • Loppers or pruning shears for larger branches
  • A ladder if needed
  • An extension cord if using an electric model
  • Gasoline if using a gas-powered model
  • Disposable tarp to contain debris while cutting
  • Bucket or bag to collect cuttings after trimming.

Once you have all the necessary equipment gathered together, it’s time to start trimming! Follow your manufacturer’s instructions for safe use and make sure to wear protective clothing at all times. After you’ve finished trimming, carefully dispose of any debris and store the hedge trimmer in a dry and secure place.

Looking after your trimmer

Proper care and maintenance of your hedge trimmer is important to ensure it reaches its full potential. It’s essential to follow the manufacturer’s instructions when oiling, cleaning and sharpening the blades. Regularly wiping down the machine and checking for loose parts can help keep it in top condition for years to come.

Looking after your trimmer

Finally, always check that your hedge trimmer is turned off before making any adjustments or repairs, as this could cause serious injury! With proper safety precautions, regular maintenance and careful use, you should be able to enjoy many seasons of successful hedge trimming.

Safety Tips for Dewalt DCHT820B

When using the DEWALT DCHT820B hedge trimmer, you should always take safety precautions to ensure safe operation. Here are some tips to keep in mind:

  • Always wear protective eyewear and gloves when operating the trimmer.
  • Make sure children and pets are kept away from the area while trimming.
  • Be aware of your surroundings at all times – look for obstacles or potential hazards that may come in contact with the hedge trimmer blades.
  • Avoid overreaching or straining while operating the trimmer as this can lead to possible injuries due to fatigue.
  • Keep a firm grip on both handles of the trimmer at all times, and do not touch the blades while they are in use.
  • Disconnect the power source when adjusting, cleaning or servicing the trimmer.
  • Ensure that all guards, covers and other safety equipment is in place before using the hedge trimmer.

Following these simple guidelines should ensure the safe operation of your DEWALT DCHT820B hedge trimmer.

Be sure to always read through the owner’s manual prior to taking on any trimming project with this trimmer so you can familiarize yourself with its functions and features.

With proper care and regular maintenance, your DEWALT hedge trimmer will provide years of reliable service.

Factors to Consider When Buying Dewalt DCHT820B Hedge Trimmer

When looking to buy a hedge trimmer, it’s important to consider a few factors to ensure you get the best tool for your needs. Here is a table comparing various indicators to help you make an informed decision on purchasing the Dewalt DCHT820B hedge trimmer.

Indicator Description
Cutting Capacity The maximum thickness of branches that the trimmer can cut.
Blade Length The length of the blades on the trimmer.
Blade Material The material used to make the blades, which affects their durability and performance.
Weight The weight of the trimmer, which can affect ease of use and maneuverability.
Battery Life The length of time the trimmer’s battery can last on a single charge.
Charging Time The length of time it takes to fully charge the trimmer’s battery.
Noise Level The amount of noise the trimmer produces while in use.

This table compares various indicators that are important to consider when buying the Dewalt DCHT820B hedge trimmer. Cutting capacity and blade length are important factors to consider as they determine the trimmer’s ability to cut through thick branches and cover more ground with each pass. Blade material affects the durability and performance of the trimmer, while weight affects ease of use and maneuverability. Battery life and charging time are also important to consider as they affect the trimmer’s run time and convenience. Finally, noise level is an important consideration for those who want a quieter trimming experience. By considering these factors, you can make an informed decision on whether the Dewalt DCHT820B hedge trimmer is the right tool for your needs.


What to look out for when buying a hedge trimmer?

When buying a hedge trimmer, it is important to consider its features and capabilities. Factors such as blade length, power source, weight, handle design, and anti-vibration technology should all be considered. It’s also important to check the warranty on the product – some are more comprehensive than others. Additionally, reviews from other customers can be a great way to get an idea of how well a particular model performs in real-life situations. [3]

What is the best wattage for a hedge trimmer?

The best wattage for a hedge trimmer will depend on the size of your hedges and the power you need. For smaller hedges, a trimmer with 500-600 watts should be sufficient, while larger hedges may require more power. If you’re using a corded model, look for one with at least 1000 watts to provide enough power to get through tough branches. Cordless models are usually lighter and more portable than their corded counterparts, but they also tend to have lower wattages – typically ranging from 20 to 40 volts. When it comes to choosing the right wattage for your hedge trimmer, make sure you opt for one that is powerful enough to handle your job without having to work too hard. [4]

How big of a hedge trimmer do I need?

When it comes to picking the right size of hedge trimmer, it largely depends on the size and type of hedges you intend to trim. If you have small or delicate hedges like boxwoods and yews, a smaller hedge trimmer with less power is more suitable. For larger hedges such as privets, hollies, or evergreens, a larger and more powerful hedge trimmer will be required. It’s important to know that the thicker the branches are that your hedge trimmer needs to cut through, the higher wattage motor you should look for when selecting a model. A higher wattage motor will give you more power and provide better cutting performance. Additionally, longer blades also help reduce vibration, which can make trimming easier on your hands.

Another factor to consider when selecting a hedge trimmer is the type of blade used. Most electric models feature blades made from either plastic or metal alloy. Plastic blades tend to be less durable and should only be used for small hedges with thin branches. Metal alloy blades are typically more durable and better suited for larger hedges with thicker branches.

By taking into consideration the size and type of hedges you intend to trim, as well as the blade material and motor wattage, you’ll be able to select the right hedge trimmer size for your needs. With proper care and maintenance, this tool will provide years of reliable service!

Is a 20V hedge trimmer powerful enough?

Yes, a 20V hedge trimmer can be quite powerful. Many of these models feature brushless motors that are highly efficient, so you’ll be able to trim even larger hedges quickly and effectively. In addition, many cordless models also come with variable speed settings, so you can adjust the power output to match the job at hand. With the right model, a 20V hedge trimmer should be more than enough for all your gardening needs. [5]

What is the cutting capacity of the Dewalt DCHT820B hedge trimmer?

The Dewalt DCHT820B hedge trimmer has a cutting capacity of 3/4 inch thick branches.

What is the blade length of the Dewalt DCHT820B hedge trimmer?

The blade length of the Dewalt DCHT820B hedge trimmer is 22 inches.

Is the Dewalt DCHT820B hedge trimmer cordless?

Yes, the Dewalt DCHT820B hedge trimmer is a cordless tool powered by a 20V lithium-ion battery.

What is the battery run time of the Dewalt DCHT820B hedge trimmer?

The battery run time of the Dewalt DCHT820B hedge trimmer varies depending on the workload, but it can provide up to 90 minutes of run time on a single charge.

What is the weight of the Dewalt DCHT820B hedge trimmer?

The Dewalt DCHT820B hedge trimmer weighs 7.5 pounds.

Is the Dewalt DCHT820B hedge trimmer easy to maneuver?

Yes, the Dewalt DCHT820B hedge trimmer is designed to be well-balanced and easy to maneuver, thanks to its lightweight and ergonomic design.

Can the blade of the Dewalt DCHT820B hedge trimmer be sharpened?

Yes, the blade of the Dewalt DCHT820B hedge trimmer can be sharpened with a file or sharpening stone.

What is the warranty on the Dewalt DCHT820B hedge trimmer?

The Dewalt DCHT820B hedge trimmer comes with a 3-year limited warranty, 90-day money-back guarantee, and 1-year free service contract.

What is the maximum speed of the Dewalt DCHT820B hedge trimmer?

The Dewalt DCHT820B hedge trimmer has a maximum speed of 2800 strokes per minute, allowing for quick and efficient cutting.

Does the Dewalt DCHT820B hedge trimmer come with a blade cover?

Yes, the Dewalt DCHT820B hedge trimmer comes with a blade cover to protect the blade during storage and transportation.

Can the Dewalt DCHT820B hedge trimmer be used for shaping and sculpting hedges?

Yes, the Dewalt DCHT820B hedge trimmer can be used for shaping and sculpting hedges, thanks to its precision blades and lightweight design.

Is the Dewalt DCHT820B hedge trimmer compatible with other Dewalt 20V batteries?

Yes, the Dewalt DCHT820B hedge trimmer is compatible with all Dewalt 20V MAX batteries, allowing for easy battery interchangeability.

What is the noise level of the Dewalt DCHT820B hedge trimmer?

The Dewalt DCHT820B hedge trimmer has a noise level of 87 decibels, which is relatively quiet compared to other hedge trimmers on the market.

Can the Dewalt DCHT820B hedge trimmer be used for commercial purposes?

While the Dewalt DCHT820B hedge trimmer is designed for residential use, it can still be used for light commercial purposes, such as trimming small hedges and bushes.

Video Guide: How To Use Dewalt DCHT820B


For anyone seeking a dependable, straightforward-to-use tool to keep their hedges in pristine condition, the DEWALT DCHT820B Hedge Trimmer is an ideal option. Its 22″ dual-action blades make trimming fast and effortless, while its robust construction ensures it will last through many years of service. With features such as a quick-connect coupler and adjustable handle, this trimmer offers unparalleled convenience and comfort. Finally, the impressive five-year limited warranty makes the DEWALT DCHT820B one of the best options on the market today.
If you’re interested in investing in a quality hedge trimmer that won’t let you down, the DEWALT DCHT820B is definitely worth considering. This trimmer will be a dependable addition to your garden maintenance toolkit for years to come.

Happy trimming!


  1. https://www.diy.com/ideas-advice/hedge-trimmer-buying-guide/PROD_npcart_100273.art
  2. https://www.manomano.co.uk/advice/hedge-trimmer-buying-guide-3029
  3. https://learn.compactappliance.com/hedge-trimmers/
  4. https://www.manomano.co.uk/advice/hedge-trimmer-buying-guide-3029
  5. https://www.thespruce.com/best-cordless-hedge-trimmers-4150699