Which is better for driving long screws?

B. The impact driver in the kit delivers rotational impacts that a drill/driver lacks, so it drives long screws and lag bolts with less cam-out. A can drive screws, but its drill clutch slips under heavy load.

Is B worth the extra money?

Yes if you need an impact driver or a second battery. At $185.00 versus $112.99, you pay about $72 more for a second tool and a second 2.0 Ah battery, which is less than buying them separately.

Do the batteries fit both kits?

Yes. Both use Milwaukee's M18 18V lithium-ion platform, so the 2.0 Ah batteries interchange between the drill and the impact driver and with other M18 tools.

Which has more torque?

They tie on the drill: both are rated 550 in-lbs at 0-1,700 RPM. B adds an impact driver on top of that.

Which is lighter to carry?

A is listed at 3.2 lbs with its battery and 5.7 in. long. B's drill is the same compact body, but the kit carries a second tool and battery, so the bag is heavier.

Which one lasts longer?

Both use brushless motors and all-metal chucks, so tool life is close. B has the edge in practice because two batteries let you keep working and spread wear across packs.

Milwaukee M18 Compact Brushless Drill Driver Kit vs Milwaukee M18 Brushless Cordless 1/2 in. Compact Drill & Impact Driver Kit with 2.0 Ah Batteries

Buy the M18 Compact Brushless Drill Driver Kit (A) if you need one drill and want the lowest price: $112.99 at eBay as of November 3, 2026. Buy the M18 Brushless Drill & Impact Driver Kit (B) if you want two tools and two batteries; its lowest recent price was $185.00 on October 31, 2026. A's price has ranged from $99.00 to $99.00 since October 30, 2026, so the current $112.99 is above its recent low.

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