What's inside
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For most buyers, the best-value DeWalt 20 volt drill set is the mid-tier brushless two-tool combo — a compact drill/driver plus an impact driver with two batteries — because the bundled batteries and charger are worth nearly as much as the tools themselves. A drill-only kit only wins if you genuinely never drive screws, and the premium 5.0Ah kits only pay off if you work the tools hard enough to drain a compact battery before lunch. Here’s how the tiers actually break down.
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What we cover
The kits at a glance
DeWalt sells the same handful of tools in many box combinations. The model suffix tells you the battery load-out: C2 means two compact ~1.5Ah packs, D2 means two 2.0Ah packs, and P2 means two 5.0Ah packs. That one letter is often a $100+ swing in value.
| Kit | Tools in the box | Motor / output | Batteries | Charger | Typical street price |
|---|---|---|---|---|---|
| DCD771C2 (drill only) | DCD771 ½″ drill/driver | Brushed, 300 UWO | 2 × 1.3–1.5Ah | Standard ~2A | $100–$130 |
| DCK240C2 | DCD771 drill + DCF885 impact driver | Both brushed; impact ≈1,400 in-lbs | 2 × 1.3–1.5Ah | Standard ~2A | $150–$190 |
| DCD777C2 (drill only) | DCD777 compact drill | Brushless, 340 UWO | 2 × 1.5Ah | Standard ~2A | $120–$160 |
| DCK277C2 | DCD777 drill + DCF787 impact | Both brushless; impact ≈1,500 in-lbs | 2 × 1.5Ah | Standard ~2A | $180–$230 |
| DCK278C2 (Atomic) | DCD708 drill + DCF809 impact | Both brushless, subcompact; impact ≈1,700 in-lbs | 2 × 1.5Ah | Standard ~2A | $160–$210 |
| DCK299P2 | DCD996 hammer drill + DCF887 impact | Both brushless; drill ≈820 UWO, impact ≈1,825 in-lbs, 3-speed | 2 × 5.0Ah | Faster ~4A | $350–$430 |
| DCK2100P2 | DCD999 hammer drill (FlexVolt Advantage) + DCF887 | Both brushless; highest-output 20V drill | 2 × 5.0Ah | Faster ~4A | $400–$480 |
Prices float with promotions, but the pattern is stable: every jump in tier is mostly a battery and motor upgrade, not a different tool category.
Drill-only vs. drill + impact driver
A drill/driver bores holes and drives screws with an adjustable clutch — that clutch is what keeps you from snapping #8 screws or burying heads in pine. An impact driver trades the clutch for rotational hammering: it sinks 3″ deck screws and lag bolts with far less wrist torque and almost no cam-out, but it’s loud and can overdrive small fasteners if you’re careless.
For woodworking specifically:
- If your work is drilling pilot holes, countersinking, and driving screws under 2″, the drill alone handles it. The drill-only DCD771C2 or DCD777C2 is the cheapest way into the battery platform.
- If you build decks, install cabinets, hang doors, or drive anything structural, the impact driver earns its slot fast. Buying it later as a bare tool typically costs $90–$130 — nearly the price gap between the drill-only kit and the combo.
- Woodworkers doing furniture and interior trim often prefer the Atomic combo (DCK278C2): the subcompact heads fit inside cabinets and between studs where full-size drills won’t.
Amp-hours and chargers: where budget kits cut corners
Amp-hours are fuel-tank size, not power. A 1.5Ah compact pack keeps the drill light but sags under sustained heavy loads — hole saws over ~2″, spade bits in hardwood, or long lag-bolt sessions — and it needs recharging roughly three times as often as a 5.0Ah pack. The 5.0Ah battery also adds roughly half a pound to the tool, which matters overhead.
Kit chargers matter just as much and get less attention. Most C2 kits ship a standard ~2-amp charger; the P2 kits step up to roughly 4-amp units. Approximate charge times from empty:
| Battery | Standard ~2A charger | ~4A charger (DCB115/DCB1104) | 8A fast charger (DCB118) |
|---|---|---|---|
| 1.5Ah compact | ~35–45 min | ~25 min | ~20 min |
| 2.0Ah | ~45–60 min | ~30 min | ~25 min |
| 5.0Ah | ~2.5 hrs | ~75 min | ~45–60 min |
Real times vary with pack temperature and age. The practical takeaway: a 1.5Ah two-battery kit on a slow charger works fine because you swap packs constantly; a single 5.0Ah pack on a slow charger leaves you waiting. If you buy a P2 kit, the faster charger it includes is part of what you’re paying for.
The cost-per-tool math
Worked example using typical street pricing for the brushless DCK277C2 at ~$200:
- Two 1.5Ah batteries, bought separately: ~$80–$90
- Charger: ~$40
- Contractor bag: ~$15–$20
- Remaining for both tools: roughly $60–$70, or ~$30–$35 per tool
Bought as bare tools, that drill and impact driver run about $190–$220 combined. The combo effectively discounts the tools by two-thirds once you account for accessories you were going to need anyway. The same math on the premium DCK299P2 (~$390): two 5.0Ah packs (~$160–$180 street), charger (~$50), case (~$25) leaves both pro-grade tools at roughly $150 total versus ~$300+ separately. Meanwhile, the drill-only DCD771C2 at ~$110 means the drill itself effectively costs $20–$30 — the cheapest entry into the platform, period.
Which kit for which buyer
| Your situation | Best pick | Why |
|---|---|---|
| First cordless drill, occasional home repairs, tight budget | DCD771C2 or DCK240C2 | Cheapest batteries-and-charger bundle; brushed motors are fine at low duty cycle |
| Furniture, cabinetry, trim work in tight spaces | DCK278C2 Atomic | Shortest head lengths; enough torque for screws, clutch on the drill protects workpieces |
| Mixed DIY: decks, shelving, general projects | DCK277C2 | Brushless durability and full-size drill capability at mid-tier price |
| Remodeling, frequent lag bolts, some masonry drilling | DCK299P2 | 5.0Ah runtime, hammer-drill mode, 3-speed impact control; fast charger included |
| Already owns 20V MAX batteries and a charger | Bare tools (e.g., DCD791, DCF887) | Kit batteries duplicate what you own; bare tools are cheaper per capability |
Ownership realities
- What wears first: the compact batteries, not the tools. Small packs cycle harder and typically show capacity fade in two to four years of regular use. The brushed motors in the DCD771/DCF885 will eventually need brushes under heavy use — a non-issue for occasional users, a reason to go brushless for daily drivers.
- Consumables: impact drivers require impact-rated bits. Standard driver bits snap under the hammering, and cheap bits round out screw heads faster than the tool does.
- Common mistake: using the impact driver for everything. Fine woodworking screws still belong in the drill, where the clutch sets depth precisely. Owning both tools is the point of the combo — don’t let the impact become the only one you grab.
- Battery care: all 20V MAX batteries — compact, XR, and PowerStack — are cross-compatible with every 20V MAX tool, so upgrading later is painless. Store packs around half charge in a cool, dry spot; heat is what kills cells fastest.
- Warranty: DeWalt tools carry a three-year limited warranty, one year of free service, and a 90-day return window; batteries have their own coverage terms. Register the kit — the serial-based claim process is much easier with registration on file.
- The bag: soft bags in C2 kits wear at the zipper and corners within a year or two of truck duty. The hard cases in P2 kits hold up better.
Quick answers
Do I need the hammer drill for woodworking?
No. Hammer mode only helps in masonry — brick, block, concrete. Buy it because it comes bundled in the premium kits, not because wood requires it.
Can I mix batteries between kits?
Yes. Any 20V MAX pack runs any 20V MAX tool, and FlexVolt batteries also work in 20V tools. A 5.0Ah pack from a P2 kit slides straight onto the Atomic drill.
Is the cheapest combo a bad drill?
Not bad — just brushed and lower-output. The DCD771 handles typical drilling and driving fine; what you’re giving up versus the brushless tiers is runtime per charge, motor longevity under heavy use, and some torque headroom.
Bottom line: if you’re buying one DeWalt 20 volt drill set to cover years of projects, the brushless DCK277C2 hits the value sweet spot; drop to the DCK240C2 or a drill-only kit if budget rules; step up to a 5.0Ah P2 kit when the work gets structural or daily.