DEWALT DCD790B 20V XR Lithium Ion Brushless Compact Drill/Driver Review

If you're a fan of DeWalt power tools and want a compact drill/driver, you can get exactly what you want with this model. The DEWALT DCD790B 20V XR Lithium Ion Brushless Compact Drill/Driver combines two power tools and doesn't skimp on power or performance. With this tool, you'll be able to complete a variety of drilling or fastening applications with ease and confidence.

In this review, I'll go over the features of this drill/driver combo tool that make it unique from others on the market.

I'll also discuss consumer ratings from buyers just like you, and talk about where the DeWalt tool excels and where it has room for improvement. Lastly, I'll be sharing some tips that will make shopping for the tool easier.​

Brushless Motor

One of the most impressive features of the DCD790B brushless compact drill/driver is the fact that it's created with a motor that doesn't need brushes to operate. Without brushes, the motor is more powerful and reliable. With a brushless motor, you can count on 50% more run time and decreased motor wear. The decrease in motor wear happens because there are no brushes to interfere with gears. This unique design also decreases friction, which adds more power to the drill/driver tool.

2 Speed Settings

To increase control, DeWalt created this 20-volt drill/driver with 2 separate speed settings. With two speeds to choose from, you can easily control how much speed and torque is applied for each project. Being able to control speed and torque allows you to be more accurate and confident when using the compact tool.

DEWALT DCD790B Review - LED light comes in handy in poorly-lit areas

LED light comes in handy in poorly-lit areas

LED Light

When you're trying to make precise holes or fastening applications, you don't want to worry about whether you have enough light to be accurate. To make concentrating on your project easier, DeWalt added an LED light to the combo power tool. The LED light turns on when the tool is activated and has a 20 second delay. Like all LEDs, the light in this tool will last longer and shine brighter than other types of technology, which means you can expect this light to last a very long time. On average, an LED light bulb will last about 100,000 hours with regular use. Since the light deactivates after 20 seconds, you don't have to worry about leaving it on accidentally and draining your battery.

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Compact and Lightweight

This tool includes drill and driver features in one unit. With this much power in the tool, you would probably expect it to be heavy and bulky. DeWalt understands that heavy, bulky tools aren't user friendly and designed the compact drill/driver to be compact and lightweight. With its small size and light weight at just 3 lbs., this power tool is ideal for overhead applications and decreases user fatigue. Decreased user fatigue makes this tool ideal for all day, every day use.

DEWALT DCD790B 20V XR Lithium Ion Brushless Compact Drill/Driver Package Details and Accessories

  • 1 x DeWalt DCD790B Drill/Driver – bare tool only, battery and charger sold separately
DEWALT DCD790B Brushless Compact Drill/Driver Review - Compact and lightweight - perfect for tight spaces other tools can't fit in

Compact and lightweight - perfect for tight spaces other tools can't fit in


The combo 20-volt drill/driver from DeWalt measures 8.6 x 3.9 x 9.9 inches and weighs 3 lbs.


  • Energy Star certified
  • Uses Lithium Ion batteries
  • 3-year limited warranty
  • Brushless motor
  • LED light
  • 2 speed settings
  • Can leave battery in charger (charger turns off when battery is fully charged)
  • Reverse cuts 3/4" holes through studs easily


  • Batteries and charger not included with purchase
  • Quite loud when in use

Consumer Ratings

Amazon Customer Reviews: Click Here

The DCD790B 20V XR compact/driver drill has so far garnered quite good approval ratings from past purchasers across many independent review sites. But looking at some negative reviews, you may think this isn't going to be the best power tool for you. However, it's important to realize that the tool has received some unfair reviews for being sold as a bare tool. Many reviewers complained that no accessories were included with purchase. If you know going into the purchase that this is sold and advertised as a bare tool, you shouldn't be disappointed with this purchase.

DEWALT DCD790B 20V XR Lithium Ion Brushless Compact Drill/Driver Price

Today's Price: Click Here


The DEWALT DCD790B is a great option for anyone who wants a drill and a driver in a combo unit. DeWalt opted not to install brushes in this tool to decrease friction and motor wear, and to improve overall power. The tool is sold as a bare tool, so you'll need to purchase additional 20-volt lithium batteries and a 20-volt charger. This will not be an issue if you already own other 20-volt DeWalt tools.

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