DEWALT is a prominent company in the power tool and hand tool industry. They bring out some of the best products in the field. Hobbyists as well as professional builders who need the finest cordless drills and drivers available are not disappointed with this company. Once you are entangled in one manufacturer’s network of power tools, it would be more cost-effective and advantageous if you stick with them instead of having multiple products by different makers.

Now, we’ll review two of DeWalt’s drill driver kits in order to provide you in-depth review on which of these power tools you must add to your collection.

DEWALT DCD791D2 vs. DCD991P2 Review

1. DEWALT DCD791D2 20V MAX XR Li-Ion 0.5″ 2.0Ah Brushless Compact Drill/Driver Kit

DEWALT DCD791D2 20V MAX XR Li-Ion 0.5" 2.0Ah Brushless Compact Drill/Driver Kit


The DEWALT DCD791D2 20V MAX XR Li-Ion 0.5″ 2.0Ah Brushless Compact Drill/Driver Kit comes with a brushless motor which makes this an excellent professional tool.

A brushless motor operates double the amount of time in just a single charge. In addition brushless motor also runs much cooler, and has much more power compared to a regular brushed motor.

Also, the very first thing you’ll probably notice about the DCD791D2 is that it is lightweight.  Weighing only 3.4 lbs. this power tool is a very handy and small drill that can fit comfortably in your hand.

Furthermore, this power tool is incorporated with 3-mode built-in LED light with a spotlight mode that allows you to work at night since it provides excellent illumination. It is also perfect for working in cramped areas that are dimly lit and quite hard to reach. It utilizes 2.0 Ah 20V XR li-ion batteries that can deliver long battery life and have more capacity over other battery packs such as NiCad batteries.

It also comes with a battery fuel indicator that allows you to know how much juice is still left before you recharge it. Its kit comes with two batteries so you’ll not run out of juice. You can also charge on while using another.

Moreover, the DCD791 is a lightweight, compact, and would feel good in your hand as it only weighs just 3.4 lbs. and only measures 6.9 inches from front to back. Its center of gravity is right above its grip, this is the reason why it stays balanced while you’re working so you’d have better control of it.

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On the other hand, its two-speed transmission can give you more flexibility to choose on how to deal with your jobs. Its low speed runs for up to 550 RPM, while its high can run for up to 2000 RPM. Its ½ inch ratcheting metal chuck grips bits firmly even on tough tasks.

Now, if you’re working in a dimly lit workstation, then its 3-LED lights can help you see exactly where you want to drill or drive without any use of an extra lamp. In fact, the DCD791’s lights come with a spotlight function that allows them run for up to twenty minutes at a time.

And lastly, since this is a cordless drill, it wouldn’t mean that it would lack torque. In fact, it is rated for 460 unit watts out, or over 600 inch per lbs. of power. That’s ideal for working in metal or hard woods.

Now, if you’re planning to sink fasteners in masonry, the next hammer drill might be the right one for your needs.


  • Comes with kit box, belt hook, 2.0Ah XR battery packs, and a charger
  • Long warranty
  • Equipped with 3-mode LED lights with a spotlight mode
  • High speed transmission with 2-speed settings
  • Compact and lightweight design for tight spots
  • Comes with 2 XR li-ion batteries with fuel gauge
  • 57% more run time
  • Comes with shutoff function
  • Ergonomic comfort grip handle which provides ideal balance and control
  • Well-suited for masonry work and tough materials
  • 460 UWO or around 600 inches per pounds of maximum torque
  • Has long battery life
  • Comes with very well-made ratcheting chuck


  • The drill bits tend to fall off
  • LED lights tend to cast shadows

2. DEWALT DCD991P2 20V MAX XR Lithium Ion Brushless 3-Speed Drill/Driver Kit

DEWALT 20V MAX XR Brushless Drill/Driver 3-Speed, Premium 5.0Ah Kit (DCD991P2)If you found a liking to the DCD791 drill driver we tackled above, but seeking something more appropriate to work with rock or concrete, then the DCD991 hammer drill might be the ideal power tool for your needs. Similar to other tools, it is powered by a brushless motor for optimal torque and long runtime.

The DCD991B comes with a hammer drill mode that allows you to work witch rock or even concrete since its 885 inches per pounds of optimal torque or 820 unit watts out of power and the brushless motor it uses. For all we know, those who work with power tools are quite familiar with brushless motors by now because this technology has long been established since 60s. We’re all aware that brushless motors mean smarter tools, and by this, it implies extra durability and performance.

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Also this drill driver comes with a three-speed all-metal transmission that offers speed that ranges from 450 to 2,000 RPM which is more than enough to do heavy duty tasks. You can also turn off the hammer drill function and use it for drilling and driving in plastics, thin metals, and softwoods. Also, its removable side handle rotates 360 degrees, allowing you to get the right grip on the tool all the time.

Aside from that, the DCD991B is well-built especially because of its nitro-carbonized, heavy-duty, and ½ inch metal ratcheting chuck that is so good at gripping bits when the drill uses high power. Additionally, it is ergonomically engineered to be lightweight and is easy to handle particularly that it only weighs 4.6 pounds.

This power tools is also incorporated with a 60-lumen LED light that’s strategically located at the base of the unit. It comes with three settings on which it include a spotlight mode with an option to delay for up to 20 minutes after the trigger is released. This feature makes this tool for working in dim places and tight spots.

Furthermore, it comes with a 3-speed all-metal transmission that ranges from 450 to 2000 RPM.  Because it is a hammer drill, it is engineered to stand up to really tough tasks. In fact, it comes with a maximum torque of 820 unit watts out for driving and drilling into masonry and metal without choking and binding.

It is also a good thing that DeWalt engineered the DCD991 with a heavy-duty ½ inch ratcheting chuck with carbide inserts. Anything less would not be as good at gripping bits when the drill comes with so much power.

Similar to the DC791, the DCD991 comes with three bright LED lights with a special spotlight mode. You will also do fine working in dim locations even if you have forgotten your other lamps. Also, because it comes with two 5Ah li-ion battery packs, you don’t really have to worry about running out of juice.

Even though the DCD991 is a hammer drill, you can turn off its hammer mode and use it for drilling and driving in soft plastics and woods. In addition, it only weighs just 4.6 lbs. and its weight is nicely balanced right over its handle.

And lastly, it comes with a removable side handle for its hammer drilling feature. That additional handle can rotate 360 degrees so you can always have the right grip on the tool.

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  • Comes with belt hook, kit box, side handle, two 5.0Ah MAX XR battery packs, and battery packs
  • Comes with long warranty
  • Equipped with 3-Mode LED light with spotlight mode
  • 0-38,250 BP for fast drilling in masonry materials
  • High-efficiency brushless motor
  • 57% run time over brushed
  • High performance transmission
  • Improved run-time and fat application
  • Very efficient and powerful
  • Very durable
  • Comfortable handle grips
  • Ideal for masonry work
  • Very versatile
  • Uses brushless motor technology


  • Its battery packs can get loose
  • No integrated bit holders

Dewalt DCD991 vs. DCD791 Product Comparison

Both DCD791DT and DCD991B run on brushless motor technology that makes them ideal for professional use. Both have sufficient power and enough speed to go through one of the toughest task which is masonry. However there’s a big difference in terms of price range. The DCD991B is a little bit pricier compared to the DCD791D2.

Also, the DCD991B comes with a toolbox, a 360-degree side handle, a belt hook, a charger, and two batteries. The DCD791D2 also comes with a toolbox, a belt hook, one charger, as well as two battery packs.


Rather than picking between these two power tools, why don’t you get them both? On the other hand, if ever  you only want one, you can consider what materials you’re planning to drill so that you won’t regret the choosing the other one over the other.

If your work mainly involves masonry, such as sinking anchors in concrete, then we recommend that you get the DCD991P2 kit as it is a hammer drill that comes with two long-life battery packs. Additionally, you can also turn off its hammer mode from the clutch ring and just it as a normal driver/drill for soft materials. Its 3-speed transmission makes it a very accurate power tool.

Now, if you work in metals, woods, or plastics, then you might want to consider the DCD 791D2. This one is a professional tool for a number of tasks all around the worksite.