Which kit is better for drilling into concrete?

The A kit. Its DCD799 is a hammer drill/driver with a masonry mode. The B drill is a plain drill/driver and will struggle in concrete.

Is the A kit worth about $96 more?

Yes if you need hammer drilling or want POWERSTACK batteries. If you only drill wood and metal, the B kit does the same driving jobs for $149.00 at The Home Depot as of November 3.

Do both kits use the same impact driver?

Yes. Both list the DCF809 with 1,700 in-lbs of torque and a 1/4 in. hex chuck, so driving performance is the same.

Which has longer battery runtime?

The A kit. Its POWERSTACK packs are 1.7Ah against 1.3Ah in the B kit, about 30% more capacity, and POWERSTACK cells hold voltage better under load.

Which is more reliable?

The B kit has a known record: 4.6 out of 5 from 8,482 ratings, with some reports of a broken bit retainer. The A kit has no rating history shown, though its tools are current DeWalt models.

Can I use my existing DeWalt 20V batteries in either kit?

Yes. Both are 20V MAX tools and take the same slide-on DeWalt 20V batteries and chargers.

DEWALT (DCK226E2) 20V MAX Lithium-Ion Cordless 2-Tool Combo Kit with (2) POWERSTACK 1.7Ah Batteries and Charger vs DeWalt 20V Max Brushless Drill and Impact Driver Set

Buy the B kit if you want the lowest price: $149.00 at The Home Depot as of November 3, versus $244.99 at Amazon for the A kit. The A kit is the better tool set, with two POWERSTACK 1.7Ah batteries and a hammer drill function the B drill lacks. The B kit's 1.3Ah batteries run down faster, and its 4.6-star record includes reports of a broken bit retainer.

Today the DeWalt 20V Max Brushless Drill and Impact Driver Set costs $95.99 less at its best price.

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