Dewalt DCD777 vs DCD791 Drill/Driver – Which One is Better?

Dewalt DCD777 vs DCD791 Drill/Driver – Which One is Better?

Power Drills are a must-have for any toolbox, and the choice between the Dewalt dcd777 vs. dcd791 can be tough.

These drills are amazing tools that will make your life easier on the job site. But which one is right for you?

I know that you need a robust and durable driver that can handle even the most challenging jobs.

That’s why I’ve put together this comparison of the brushless Dewalt DCD777 and Dewalt DCD791 to help you make the best decision for your needs.

So here are all the details about these two mind-blowing machines.

FeaturesDewalt DCD777Dewalt DCD791
Motor  BrushlessBrushless
Voltage  20V20V
Power source  Battery PoweredCordless
Length of the drill  7.52″ length6.9″ length
Speed (RPM)  1750 RPM2000 RPM
Weight  2.6 lbs.3.4 lbs.
Batteries2 batteries included2 batteries included
Battery GaugeIncludedIncluded
Li-ion batteryIncludedIncluded
Best ForModerate commercial uses and DYI usesBest for rugged uses.
Amazon Ratings4.3 out of 54.8 out of 5
PriceCheck hereCheck here

Dewalt DCD777 vs DCD791 Drill Driver Complete Review

The main difference between DCD777 vs. DCD791 is the unit’s weight and R.P.M.

To be precise, the DCD777 weighs only 2.6 pounds, whereas the DCD791 weighs around 3.6 pounds. Due to this, you will notably feel the difference while using these tools.

As for the R.P.M, the DCD777 is a driver combat kit that delivers 1750 RPM. Hence it is more suitable for home, and DYI uses.

On the other hand, the DCD791 brushless driver by DeWalt is designed for rough and commercial and provides up to 2000 RPM.

Besides, I observed several other differences in both these DeWalt tools. Have a look

Battery Run Time

It’s always a bummer when your battery dies right in the middle of a project. That’s why it’s so great that both the Dewalt DCD777 and DCD791 come with 20 V batteries.

You know what they say: the couple that drills together stays together. And with the Dewalt DCD777, you and your partner can drill for hours on end.

That’s because this powerful little tool has a brushless motor that is 33% longer lasting than other models – meaning you can keep on going… and going… and going.

Not to mention, the brushless motor also runs more smoothly and uses less battery power. So you will be drillin’ up a storm, but you’ll be doing it more efficiently. Now that’s what we call a win-win.

Brushed motors are the old-school models that most of us grew up with. If you’re looking for an upgrade, you’ll want to check out DeWalt’s DCD791.

This bad boy runs 57% longer than brushed motors without placing a burden on the engine. So what does that mean for you?

It means that you can finally finish that home project you started three years ago without having to stop every 5 minutes to recharge your drill. You’re welcome…

Who wins: As for the battery’s lifespan and run time, we can say that DCD791 is your safest bet.


Anyone who knows how to use a power tool can tell you that heat is the enemy. Not only does it make the toolless comfortable to use, but it can also cause irreparable damage to the engine.

That’s why brushless motors are such a valuable feature. By keeping the engine cool, they help to extend its lifespan and prevent premature wear and tear.

DeWalt’s DCD777 and DCD791 Cordless Drill Drivers are equipped with brushless motors, making them an excellent choice.

In addition to their longevity, brushless motors also tend to be more powerful than their traditional counterparts. As a result, you can rest assured that your DeWalt drill will be up for the task, no matter what you throw at it.

Who wins: In this department, both these drill kits are identical and are designed for extended run time.


Of all the things that Dewalt makes, their DCD777 brushless motor technology is perhaps one of the most impressive. It runs at speeds of up to 1750 RPM, making it perfect for high-speed applications.

And what’s more, it has a two-speed transmission that allows you to switch between 0-500 RPM and 1750 RPM.

So whether you need high speed or low speed, this tool has you covered. What’s not to love?

There are a lot of factors to consider when choosing a drill, but if you’re looking for speed, the Dewalt DCD791 is the way to go. This drill can run at a speed of 2000 RPM.

Moreover, it also has dual-speed settings for your convenience. The first speed mode is 0-500 RPM, while the second is 0-2000 RPM.

So whether you’re drilling through rigid materials or just trying to get the job done quickly, the Dewalt DCD791 can help you do it.

Who wins: In terms of speed, DCD791 is a clear winner. Which one to choose depends on your needs and preferences.

Weight and Size

But when it comes to the weight and size, the DeWalt’s DCD777 weighs around 2.6 pounds, and it is lighter than the DCD791, which weighs around 3.6 pounds.

While the difference in both these drills is not that much, having a lighter tool always comes in handy, allowing for greater portability. Thus you can hold the tools for prolonged periods without strain or hand fatigue.

Who wins: In this category, the DCD777 is a clear winner and outperforms the DCD791.

Grip, Led light, and Warranty

Furthermore, both these DeWalt models come equipped with bright L.E.D. Lights. The lights are bright enough and allow you to work in dark conditions, but both have an entirely different working mechanism.

To be precise, the built-in LED in DCD791 comes equipped with an auto shut down option along with multiple light modes, but I found it much sharper and brighter than the DCD777.

On the other hand, the DCD777 also features a built-in LED with a 20-second trigger; hence it will remain on for around 20 seconds. Both these models serve the purpose well and enable you to work in dim conditions with the LED light.

According to the experts, the DEWALT DCD777C2 is an efficient drill. Plus, it features sufficient power and torque for any task.

But while analyzing, I observed that its handle is too small and it is not that comfortable; hence you might feel strain and insufficient platform, especially when performing complex jobs.

On the other hand, the DCD791 grips well. The tool’s grip is soft, comfortable, and effortless to hold even for prolonged uses.

In my opinion, the best thing about this drilling machine is how compact and light it is. But still, it is a powerful driver.

Who wins: The situation in these departments is pretty much complicated. While analyzing these drill drivers, I will say that the final result is drawn in all these departments.

Price or Value for Money

When it comes to tools, it’s essential to buy the right one for the job. I always recommend the following rule: buy the tool that offers you all the features you need, providing you with unmatched quality and fulfilling your needs.

You’ll never go wrong when purchasing a new tool with this simple rule in mind. In my opinion, both these drivers are robust, reliable, and designed to make things easier for you. But still, both these have different price tags.

If you’re looking for an affordable drill that doesn’t skimp on quality, the Dewalt DCD777 is an excellent option. It’s one of the most popular drills on the market, and for a good reason – it’s powerful, durable, and easy to use. Plus, it comes with a handy carrying case, so you can take it wherever you go.

The DCD791 might cost a bit more than some of the other options on the market, but it’s definitely worth the extra investment.

This model is more potent than most, making it ideal for heavy-duty jobs. It also has several additional features that make it even more versatile. If you’re looking for a top-quality drill, the DCD791 is worth the extra cost.

It’s no secret that I’m a big fan of DeWalt’s DCD777 Lithium-Ion Brushless Compact Drill/Driver. It’s lightweight, powerful, and versatile, making it a great choice for many projects.

However, when it comes to value for money, the DCD791 wins hands down.

Dewalt DCD777 vs DCD791 (Pros and Cons)

Dewalt dcd777


Features chuck brake for quick and easy bit changes.

Compact enough to allow working in tight spaces such as closets, under shelves, and cupboards.

Dual batteries are handy and feature enough power.


The handle’s grip is a bit uncomfortable.

Dewalt dcd791


Ideal for drilling through standard steel, stainless steel, and aluminum.

The brushless motor of this drill is more powerful than the other premium drills.

Compact design with ergonomic handle.

No noise and sparks.


Features plastic chuck, which seems too flimsy.

Dewalt DCD777 vs DCD791 Kits Comparison:


The Dewalt DCD777B 20V Brushless Driver is the perfect tool ever invented. Not only the tool is lightweight and powerful, but it also comes with a variety of features to appeal to user comfort.

The comfort grip handle is ergonomically designed to offer users the utmost balance and control. In addition, the LED work light provides illumination for dark work areas, and the variable speed trigger allows for precision control.

Lastly, with its smooth and superior performance, it’s no wonder the Dewalt DCD777B 20V Brushless Drill is one of the most popular tools on the market today.

Dewalt DCD777C2

If you’re looking for an excellent mid-priced drill, the DEWALT DCD777C2 is a great option. It comes equipped with two batteries, so you won’t have to worry about running out of juice in the middle of a project. And it has more than enough torque for any job you care to tackle.

While testing this DeWalt Power drill, I’ve used it to push a three-inch hole saw through pine boards easily, and it had no trouble repetitively sinking 2 1/2 screws into pressure-treated 4×4 posts. Plus, it adjusts down nicely for wallboard work.

Lastly, the DEWALT DCD777C2 also features an LED light that provides you 20 seconds of visibility to work in dim environments safely.


If you’re looking for a cordless power drill that won’t weigh you down, the DCD791D2 20V MAX* XR Li-Ion Brushless Compact Cordless Drill is a perfect choice. At just under 5 pounds, it’s one of the lightest cordless drills on the market, making it ideal for use in tight spaces for extended periods.

Whether you’re drilling through wood, metal, or concrete, the DCD791D2 has the power and precision to get the job done right. Additionally, this compact and lightweight power drill comes with a battery and charger kit to keep your drill running at peak performance.

In addition, the DCD791D2 also features an LED work light that illuminates your work area and a tool-free chuck that makes it easy to change bits.

Lastly, the DCD791D2 will make any job more manageable with its many features and benefits.


Looking for a versatile and powerful drill? Dewalt’s DCD791P2-QW-Drill XR 18V Brushless Drill is perfect for various tasks – from repairing your roof to assembling furniture. I personally tested this drill on my old shed, and it worked like a charm.

The lightweight design allows for easy handling – even with the big 5 Ah battery. So if you’re looking for a drill that can handle just about anything, the Dewalt DCD791P2-QW-Drill XR 18V Brushless Drill is a perfect choice.

Finally, I was impressed by its superb power. It seems like there’s nothing this drill can’t handle in drill mode. So if you’re looking for a powerful and durable drill, this is the one you want.

How to use Dewalt DCD777

The Dewalt DCD777 is a powerful and versatile tool that can help you tackle various projects. With a little bit of practice, you’ll be able to use it like a pro in no time. Here is how to use this DeWalt tool to get the most out of it.

How to use Dewalt DCD791

Dewalt DCD791 is a powerful tool that can help you complete various projects. While it is easy to use, you should keep a few things in mind when operating this tool. Here is how you use it:

My Recommendation Dewalt DCD777 vs DCD791

Dewalt makes great tools- there’s no doubt about that. But when it comes to choosing between the Dewalt DCD791 and Dewalt DCD777, it can be tough to decide which one is right for you.

Both are great drills, but they have their own unique features that set them apart.

The Dewalt DCD777 is a lighter and more compact tool, making it ideal for use in tight spaces. It also has a brushless motor for increased efficiency and longer run times.

On the other hand, the Dewalt DCD791 is a bit beefier and has more power, making it better suited for heavy-duty applications. It also has a 3-speed transmission for increased control and precision.

So, which one should you choose?

Ultimately, it depends on your individual needs. If you need a robust and durable drill/driver for heavy-duty use, the Dewalt DCD791 is your best bet.

However, if you’re looking for a lighter and more compact tool for use in tight spaces, the Dewalt DCD777 is the way to go.

Frequently Asked Questions

Do all 20v Dewalt batteries fit DCD791?

Yes, you can use all 20V DeWalt with these drills. But you need to know that the battery’s compatibility is dependent on its voltage. Both the battery and impact should operate on the same voltage.

How long does the DCD791 battery take to charge?

Generally speaking, you can charge the DeWalt DCD791 battery in about 90 minutes. But it also depends on the battery’s condition and overall health.

Is a brushless drill better?

Yes, brushless drills are much better than their counterparts. The main difference between brushless drills and brushed drills is that nothing is there to cause friction and slowness; hence brushless drills deliver more power and greater torque. They have higher speeds as well. In my view, you will see a 15 to 35 percent improvement in their performance than the brushed motor drills.

Is Dewalt dcd777 Easy to Maintain?

Overall, the DCD777 is easy to maintain and use. It comes with dual 20V lithium-ion rechargeable batteries; hence you can perform your tasks without worrying about anything.

Which model is better DCD777B or DCD777C2 or DCD777S2T?

With an enormous 330 unit watts out (UWO) and around 57% more working time than the brushed motors, the DCD777B is a big player in the DeWalt’s lineup. In my humble opinion, this drill is ideal for various home improvement tasks. In fact, you can also use this drill to replace standard 2×4 ribs and boards on your fence. However, this DeWalt drill does not include a hammer drill.

With 340 units watts out (UWO) of power, the DeWalt’s DCD777S2T is an excellent pick if you are looking for a reliable tool. The tool features sufficient power for heavy-duty tasks. Additionally, the tool is exceptionally light, comfortable to grip, and effortless to use.

DCD771C2 Offers 300 UWO of maximum power, and it is the best drill for DYI and normal household uses. Overall the tool is reliable, but some verified purchasers complained that it is heavier and its price is also much higher than the others.

In the end, it depends on your personal preferences and needs. All of these tools have their positives and negatives, but one thing is guaranteed all these tools are designed to make your life easier.

Bahram Shahab
Bahram here! A certified Electrical Engineer who knows his way around using power tools like a professional. My journey of using these robust tools started back when I graduated. Since then, I have finished almost a dozen DIY woodworking jobs. Apart from that, I have developed this habit of jotting down my personal experience about using a specific tool. So, I write on them to help the community in the best possible way.