DEWALT DCD799B 20V MAX ATOMIC Brushless Hammer Drill
- Power Source: Battery
- Speed: 1650 RPM
- Amperage: 4 amps
- Voltage: 20 volts
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
Worth buying for existing DeWalt 20V Max users; anyone starting from scratch should budget for a battery and charger on top.
As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.
ASIN: B0BY184ZY2Model: DCD799BCategory: Drills
Overview
DeWalt sells the DCD799B as a bare 20V Max drill/driver, meaning the battery and charger are not part of this listing. It draws 4 amps, tops out at 1650 RPM, and weighs 2.53 pounds.
DeWalt commonly uses a B at the end of a model number to flag a bare tool listing, and that lines up with what is published here: no battery spec is included alongside the 20V Max power source. That keeps the price low for anyone already stocked with DeWalt 20V Max packs, but a first time buyer needs to budget for a battery and charger separately. Torque and clutch settings are not listed.
- 20V Max platform
- 1650 RPM top speed
- 2.53 lb tool weight
- 7 x 2 x 8 in footprint
Who it's for
Fits DeWalt 20V Max owners adding a spare or backup driver to their kit. Poor fit for someone with no compatible batteries who wants a ready to use tool out of the box.
Pros and cons
- Compact, 2.53 pound body for one handed use
- Fits the wide DeWalt 20V Max battery lineup
- 1650 RPM for fast driving
- Sold bare, no battery or charger included
- No published torque or clutch data
Performance notes
1650 RPM and a 4 amp draw put this in driving and light drilling territory rather than heavy boring work. The 7 by 2 by 8 inch, 2.53 pound body stays maneuverable in framing, cabinet, or overhead work where a bulkier drill would be awkward.
Specifications
| Brand | DeWALT |
|---|---|
| Model | DCD799B |
| Dimensions & fit | |
| Item Weight | 2.53 pounds |
| Item Dimensions | 7 × 2 × 8 inches |
| Dimensions | 7"L x 2"W x 8"H |
| Capacity & performance | |
| Speed | 1650 RPM |
| Power & efficiency | |
| Power Source | Battery |
| Amperage | 4 amps |
| Voltage | 20 volts |
Closest rivals on specs
Makita XPH16Z 18V LXT Brushless Hammer Driver-Drill- Voltage 20 vs 18 volts (+11%)
- Amperage 4 vs 5 amps (-20%)
Milwaukee 3404-20 M12 Fuel Hammer Drill Driver- Voltage 20 vs 220 volts (-91%)
- Amperage 4 vs 0.01 amps (+39900%)
Frequently asked questions
Does the DEWALT DCD799B include a battery?
No battery is listed in the specs; the power source is 20V Max battery powered but sold as a bare tool, so a compatible DeWalt battery and charger are needed separately.
What speed does the DCD799B run at?
1650 RPM.
How much does the DCD799B weigh?
2.53 pounds.