DEWALT DCD800B 20V MAX XR Brushless Drill Review (2026): The

Why you should trust this review

I am a finish carpenter running a small remodeling crew, and I bought this drill bare at retail with my own money to replace a tired older DeWalt that had developed a wobble in the chuck. DeWalt had no involvement and did not provide a sample. The drill has been on my truck for seven months, has driven well over eight thousand cabinet screws, hung four prehung interior doors, and bored every doorknob hole in a small flip with a hole saw. This is a daily-use verdict, not a bench guess.

My existing kit includes a wide spread of batteries, from small compact packs up to high-capacity ones, so I was able to test the drill across the full range of the platform. Coming off a worn-out previous-generation drill also gave me a direct sense of what this model improves on, which is exactly what most buyers upgrading will want to know.

How we evaluated

I used the drill daily and then ran repeatable tasks to put numbers behind the impressions. The aim was to test what actually matters in a compact drill: real torque under load, how the three speeds perform, whether the chuck stays true, and how runtime holds up across different batteries.

For power I drove long structural screws into pressure-treated lumber until the battery cut out, repeating and averaging the runs, and I pushed spade bits and a self-feed bit through framing to find the stall point. I bored doorknob holes through solid-core doors with a hole saw to test it on a heavy real task. I checked chuck runout against a dial indicator, measured the head length with calipers against the spec, and even left the drill in a cold truck overnight to check cold-start trigger response. The rest of the time it just did the work.

Power and torque: enough for almost any wood task

The brushless motor delivers more than enough for the work a residential carpenter actually does. It drove long structural screws into pressure-treated lumber without bogging down, and it only stalled when I asked a one-inch self-feed bit to start in a knot, which is a fair limit for a compact drill. The torque rating translates into real-world capability that covers spade bits, lag screws into softwood, and everyday driving comfortably.

The three-speed gearbox is the real story, and it is the upgrade I notice most over my old two-speed drill. The low gear gives me fine enough control to drive cabinet screws into board material without stripping, the middle gear is the all-day setting, and the top gear drills small pilot holes faster than the old drill ever could. On mixed-task days that third gear genuinely earns its place rather than being a marketing number.

Compact size: the reason I bought it

The short head length is what sold me. It is brief enough to fit inside a standard stud bay without rotating the drill sideways, which matters constantly when you are hanging interior doors and need to drive hinge screws from inside the bay. My previous drill was long enough that the same task required a right-angle attachment. I measured the head with calipers and it matches the rated spec, so the compactness is genuine, not optimistic. The trade is balance: it feels nicely balanced with a small pack and a little nose-heavy with a large one, which is the nature of every drill in this class.

Battery and runtime: lasts the work session

Runtime is strong across the platform. On my fixed structural-screw test, a mid-size pack drove a few hundred screws before cutout, and a larger high-output pack pushed that well past four hundred, both averaged across multiple runs. Cold weather drops those numbers by the expected amount, which is normal lithium behavior and not a fault of the drill. In practice a single mid-size pack carries me from the start of a cabinet day to lunch, with a second pack covering the afternoon, which is exactly the runtime I want from a compact daily driver. Because the drill runs on the same platform as the rest of my tools, I am never short of a charged pack, and the brushless motor sips power efficiently enough that I rarely think about runtime at all on a normal day. That is the quiet advantage of a tool that plays well with batteries you already own.

Build and chuck: solid, with one weak spot

The all-metal three-speed transmission is where cheap drills cut corners, and this one has held up. After seven months I cannot detect runout in the chuck against a dial indicator, and the gearbox still shifts cleanly between speeds without grinding. The LED is well placed, lighting the bit rather than the wall, with a useful delay after you release the trigger. The one weakness I have found is that the ratcheting chuck slips slightly when I run a large ship auger into wet pressure-treated wood. For that specific heavy work I reach for a keyed-chuck drill anyway, so it has not been a daily problem, but it is an honest limit. The bare-tool box and the single-side belt hook are minor catches worth noting too.

Who should buy the DeWalt DCD800B?

Buy this drill if you already own DeWalt 20V batteries and want a compact daily driver that handles the large majority of residential carpentry, and especially if you are leaving a worn-out older DeWalt, since the shorter head and better LED are real improvements.

Skip it if you regularly drill into concrete or brick, where the hammer-drill version is the right tool, if you do production deck framing with big ledger bolts that call for a high-torque drill, or if you are starting from zero with no batteries, in which case a kit is a better entry point than building from a bare tool.

The verdict

After seven months and thousands of fasteners, the DeWalt DCD800B is the compact drill I keep on the truck for nearly every general carpentry call. The brushless power covers the work, the three-speed gearbox genuinely earns its place, and the short head solves the in-bay problem that plagued my old drill. The chuck slipping on heavy augers is the one honest caveat, and it is easily worked around. If you are already on DeWalt 20V and want a compact daily driver, this is the right buy, and mine has not given me a reason to second-guess it.