Which is better for drilling concrete?

The DCD795D2 hits harder at 34,000 BPM versus 28,050 BPM on the DCD798B. Both are rated for 13 mm masonry bits, so either handles small anchors and tapcons.

Which is better for driving screws?

The DCD798B. It has 330 in-lbs of torque and 15 clutch settings; the DCD795D2's torque is not published and its clutch settings are not listed.

Is the DCD798B worth it if I own no batteries?

Only if you plan to buy 20V MAX batteries and a charger separately. The DCD795D2 kit at $99.99 includes both and is the cheaper path for a first-time buyer.

Which is more compact?

The DCD798B. Its head is 6.93 in long and the tool weighs 2.49 lbs, against about 7.76 in and 2.87 lbs for the DCD795D2.

Both use brushless motors, which outlast brushed ones. The DCD795D2 ships with batteries, so its runtime depends on the 2 Ah pack; the DCD798B's runtime depends on whichever battery you supply.

DEWALT 20V MAX Brushless 1/2 in Hammer Drill (DCD798B) vs DEWALT DCD795D2 20V XR Lithium-Ion Brushless Compact Hammer Drill Kit

Buy the DCD798B if you already own 20V MAX batteries and want the most compact, fastest-drilling bare tool. Buy the DCD795D2 if you need a complete kit with batteries and charger in one purchase. As of November 4, 2026, the DCD798B is $71.89 at eBay (tool only) and the DCD795D2 is $99.99 at eBay (kit).

Today the DEWALT 20V MAX Brushless 1/2 in Hammer Drill (DCD798B) costs $28.10 less at its best price.

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