DEWALT DCK240C2 vs DEWALT DCK277D2: Which to Buy in 2026
Updated: Sep 25
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For most buyers, the DEWALT DCK277D2 is the one to get: it specifies brushless motors on both tools and ships with 2.0Ah batteries instead of the DCK240C2's 1.3Ah packs, for roughly $25 more. Buy the DCK240C2 only if the lower price band is the deciding factor or you already own higher-capacity 20V MAX batteries and are effectively buying bare tools with a charger. This comparison is drawn from published specifications and aggregated customer ratings, not hands-on testing.
The Short Answer
These kits are not close enough to call a tie. The DCK277D2 pairs a DCD777 brushless drill/driver with a DCF787 brushless impact driver and two DCB203 2.0Ah batteries; the DCK240C2 pairs a DCD771 drill/driver with a DCF885 impact driver and two 1.3Ah packs, and its listing makes no brushless claim. The battery difference alone — 2.0Ah versus 1.3Ah — is roughly 54% more stored capacity per pack, which is the single most noticeable day-to-day gap. The price bands overlap at the edges ($150–175 versus $175–200), so the upgrade is small in dollars and large in what you actually get.
Side by Side
The DCK277D2 is brushless on both tools and packs 2.0Ah batteries against the DCK240C2's 1.3Ah, for about $25 more — that's the gap that matters.
Spec | ||
Drill/driver | DCD771 20V MAX | DCD777 20V MAX brushless |
Impact driver | DCF885 20V MAX | DCF787 20V MAX brushless, 1/4 in. |
Motor type stated | Not specified as brushless | Brushless, both tools |
Batteries included | 2 20V MAX 1.3Ah lithium-ion | 2 DCB203 20V MAX 2.0Ah lithium-ion |
Charger | 20V MAX charger | DCB1102 |
Listed torque | 1700 in-lb | 1500 in-lb |
Max rotational speed | Not published | 2800 rpm |
Price band | ~$150-175 | ~$175-200 |
Rating | 4.7 stars, 60,840 ratings | 4.8 stars, 4,670 ratings |
Warranty description | 3-year limited | 3-year limited, 1-year free service contract, 90-day money back |
Listed weight | 3.6 lb | Not published |
*Prices are approximate and were checked on 9 September 2026. Product prices and availability are subject to change; the price shown on Amazon at the time of purchase is the one that applies.
Where DEWALT DCK240C2 Wins
It wins on price and on the length of its track record. The lower band starts around $150, and it is the cheaper entry into DEWALT's 20V MAX platform with two batteries, a charger, and a bag. It also carries a higher published torque figure — 1700 in-lb versus 1500 in-lb — though these are manufacturer-stated numbers for different tools rather than results from a common test, and the gap is small enough that it is unlikely to decide whether a lag bolt goes in.
Its 60,840 ratings are the largest sample of the two by a wide margin, which makes the 4.7-star average statistically settled rather than provisional. That is not evidence of durability — a rating captures satisfaction at review time, usually within weeks of purchase — but it does mean you are not gambling on a thin review base.
Where DEWALT DCK277D2 Wins
Everything else. Both tools are specified as brushless, which generally means better efficiency and runtime per amp-hour than a comparable brushed motor, and the kit doubles down by including 2.0Ah DCB203 packs rather than 1.3Ah cells. More capacity plus more efficiency compounds: this is the kit that finishes a deck-railing job or a full afternoon of cabinet installs without a charger break. The DCD777 drill's published 2800 rpm top speed gives you a figure to plan around; no comparable number is published for the DCK240C2.
The warranty description is also more complete as listed — 3-year limited plus a 1-year free service contract and a 90-day money-back guarantee, versus a 3-year limited alone. Its 4.8-star average across 4,670 ratings is the higher score, though on a much smaller and newer sample.
Which Should You Buy
Homeowners doing occasional work — hanging shelves, assembling furniture, a few dozen screws at a time. Either kit will do this, so the DEWALT DCK240C2 is a defensible buy at the lower band. The 1.3Ah packs recharge quickly and you are unlikely to drain both in a session of that size.
Anyone doing sustained work — decking, framing, remodels, a full day of driving. Buy the DEWALT DCK277D2. Brushless motors and 2.0Ah batteries address exactly the failure mode you will hit, which is running out of charge mid-task, not running out of torque.
Buyers already in the 20V MAX system with 4.0Ah or 5.0Ah packs. The battery advantage evaporates, since your existing packs fit either kit. At that point you are paying the difference purely for brushless motors — still worth it if you use the tools regularly, harder to justify if they live in a closet.
Buyers who want the safest bet on a proven product. The DCK240C2's 60,840 ratings are the deeper record, but neither number tells you how these tools hold up after three years. If longevity is your real question, these ratings do not answer it.
Frequently Asked Questions
Do the batteries and charger work across both kits? Both are 20V MAX lithium-ion platforms, so packs from one kit fit tools from the other. If you already own a DEWALT 20V MAX battery and charger, you are effectively choosing between two sets of tools, and the DCK277D2's brushless specification becomes the whole argument.
The DCK240C2 lists higher torque. Isn't it the more powerful kit? It lists 1700 in-lb against the DCK277D2's 1500 in-lb, and that is a real published difference. But these are manufacturer figures for different impact drivers, not head-to-head measurements, and a 200 in-lb spread near the top of that range rarely changes whether a fastener seats. Runtime and motor efficiency are the more consequential differences here.
Is brushless worth about $25 more? On the published specs, yes for most buyers — you get brushless on both tools *and* batteries with roughly 54% more capacity, not just one or the other. The case weakens if the tools will see light, intermittent use, where the brushed kit's cheaper band is the more sensible allocation.
Why does the DCK240C2 have so many more ratings? It has been on the market considerably longer, which accumulates reviews. A 4.7 across 60,840 ratings and a 4.8 across 4,670 are both strong; the larger sample is more settled, the smaller one slightly higher. Neither figure measures how long the tools last.
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