Which is better for drilling into concrete?

The DCD805B. Its hammer mode runs at 34,000 BPM, which the ATOMIC drill/driver does not have. For wood, metal and screws, the ATOMIC is the better all-round choice.

Is the DCD805B really cheaper?

The bare tool is $64.20 at eBay as of November 3, 2026, versus $87.28 at Amazon for the ATOMIC kit. Add a 20V MAX battery and charger and the DCD805B usually costs more overall unless you already own them.

Which has more power?

DeWalt rates the ATOMIC at 404 UWO and the DCD805B at 330 in-lbs, so the figures are not directly comparable. The DCD805B spins faster at 2,000 RPM; the ATOMIC is tuned for compact drilling and driving.

Which is more compact?

The ATOMIC, at 5.88 in for the tool head versus 6-15/16 in for the DCD805B. The DCD805B is slightly lighter at 2.3 lbs versus 2.4 lbs.

Do the batteries interchange?

Yes. Both use the DeWalt 20V MAX battery platform, so one battery set works with either tool. The ATOMIC kit ships with a 2.0Ah battery and DCB107 charger.

Both use brushless motors, which outlast brushed motors. The ATOMIC's higher 4.9 rating from 9 ratings is a small sample; the DCD805B's 4.4 from 82 ratings includes some complaints about battery fit on units bought from resellers.

DEWALT ATOMIC 20V MAX Brushless 1/2" Compact Cordless Drill/Driver Kit vs Dewalt DCD805B 20V Compact Cordless 1/2" Brushless Hammer Drill (Tool Only)

Buy the ATOMIC drill/driver kit if you want a complete, ready-to-use drill for wood, metal and driving screws. Buy the DCD805B hammer drill if you need to bore into brick or concrete and already own 20V MAX batteries and a charger. As of November 3, 2026, the ATOMIC kit is $87.28 at Amazon, while the DCD805B is $64.20 at eBay as a tool-only bare unit. The kit costs more up front but includes the battery and charger the bare tool lacks.

Today the Dewalt DCD805B 20V Compact Cordless 1/2" Brushless Hammer Drill (Tool Only) costs $40.59 less at its best price.

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