Porter-Cable 20V MAX Impact Driver 4 inch
Score: 72/100
DEWALT DCF809B
Score: 78/100Rankings
The DeWalt DCF809B is a compact brushless cordless impact driver designed for professional-grade performance in tight spaces. It delivers high torque in a small form factor, though the tool-only configuration requires additional investment in batteries. It is best suited for professionals working in confined areas where standard drivers cannot fit.
The Porter-Cable 20V MAX Impact Driver offers a budget-friendly solution for DIYers with 1,400 in-lbs of torque and fast charging capabilities. The brushed motor is a trade-off for the lower price, leading to shorter runtime and potential heat issues during prolonged use. It is best suited for homeowners and light trade pros needing affordable power for occasional tasks.
| Attribute | | |
|---|---|---|
1,400 in-lb | 1,700 in-lbbest | |
20 Vbest | 20 Vbest | |
2,700 RPMbest | — | |
3,100 IPMbest | — | |
| ↓ lower better | 4.7 lbs | 2 lbsbest |
1.5 Ahbest | — | |
| ↓ lower better | 11.4 in | 9 inbest |
1 count | 3 countbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Performance(3) | ||
Maximum Torque (in-lb) | 1400 in-lb | 1700 in-lb |
Maximum Speed (RPM) (RPM) | 2700 RPM | Variable RPM |
Impacts Per Minute (IPM) (IPM) | 3100 IPM | Variable IPM |
Support(1) | ||
Warranty Duration (years) | 3 years | 0 years |
Accessories(1) | ||
Includes Battery | true | false |
Build & Design(2) | ||
Tool Weight (lbs) | 4.7 lbs | 2.0 lbs |
Tool Length (in) | 11.4 in | 9.0 in |
Power & Battery(1) | ||
Battery Chemistry | Lithium-Ion | Lithium-ion |
Features(3) | ||
LED Light Count (count) | 1 count | 3 count |
Chuck Type | 1/4-inch hex | 1/4-Inch Hex |
Belt Clip | null | true |
Controls(2) | ||
Speed Settings | Variable | 3-speed |
Trigger Type | Variable speed | Variable Speed |
Products in the top-left offer the best value (high score, low price).
Professional reviewers highlight the Porter-Cable 20V lineup for its value-driven performance, noting strong torque and adequate runtime in brushed models. They praise the tool's compactness for jobsite productivity but note it is not top-tier for professionals needing maximum power.
Everyday users love the lightweight build and ease of use in tight spaces, finding plenty of power for DIY screws and bolts. Recurring complaints include brushed motor heat-up on prolonged use and shorter runtime compared to brushless competitors.
“plenty of power for DIY screws/bolts”
“good torque”
Choose DeWalt for pro power and speed, choose Porter-Cable for budget-friendly entry-level needs.
Professional reviewers highlight that the DCF850 delivers specifications matching larger DeWalt models in a significantly more compact form factor. The brushless motor is tuned to provide the same torque and RPM performance as full-size competitors while maintaining the compact ATOMIC design philosophy.
Consumer reviews reflect strong user satisfaction with praise focused on accessibility in confined spaces, power-to-size ratio, precision and control, and build quality.
