Discontinued DCD791B
20V MAX* XR® Li-Ion Brushless Compact Drill/Driver (Tool Only)
Discontinued DCD791B

20V MAX* XR® Li-Ion Brushless Compact Drill/Driver (Tool Only)

  • DEWALT brushless motor delivers up to 57% more run time over brushed
  • Compact (6.9" front to back), lightweight (3.4 lb) design fits into tight areas
  • High-speed transmission with two speed settings (0-550/0-2,000 RPM) delivers up to 30% faster application speeds
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Product Overview

The DCD791B 20V MAX* XR® Li-Ion Compact Brushless Drill/Driver is lightweight and compact for working in tight spaces for long periods of time. High-speed transmission delivers 2 speed variations allowing users to choose the level of performance needed for various applications. Comfort grip adds balance and control.

Additional Features

  • Ergonomic comfort grip handle provides ideal balance and tool control
  • Metal 1/2" ratcheting chuck for superior bit gripping strength
  • 3-Mode LED provides lighting in dark work environments up to 20 times brighter than previous model
  • LED Spotlight Mode features 20-minute shutoff function allowing for extended work time in dark or confined spaces


  • (1) Belt Hook


Clutch Positions
Battery Voltage
20 V
Chuck size [Imperial]
1/2 in
Product Width [Metric]
7.6 cm
Product Length [Imperial]
8 1/3 in
Max. Cutting Capacity [Steel] [Metric]
13 mm
No Load Speed (RPM)
0-600 / 0-2000
Product Width [Imperial]
3 in
Product Height [Metric]
19.2 cm
Product Height [Imperial]
7 3/5 in
Product Weight [Metric]
1.3 Kg
Quick Connect
Max. Drilling Capacity (Steel) [Metric]
13 mm
Number of Speed Settings
Blade Diameter [Imperial]
12 in
Blade Diameter [Metric]
305 mm
Led light
Max Torque [Metric]
70 Nm
Variable Speed Dial Positions
20 V
Battery Type
20V MAX*
Chuck size [Metric]
13 mm
Variable Speed
Power Input
1600 W
Product Weight [Imperial]
3 lbs
Product Length [Metric]
21.1 cm
Max. Drilling Capacity (Wood) [Metric]
40 mm
460 W


3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed

We’re confident of the quality of our products, and we’ll repair, without charge, any defects due to faulty materials or workmanship within the specified warranty.

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We take extensive measures to ensure all our products are made to the very highest standards and meet all relevant industry regulations.

Support Manual


  • * Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18.