How to Choose a Cordless Drill/Driver: A Beginner's Buying Guide

Quick answer

For most homeowners, an 18V (20V Max) drill/driver kit with two batteries is the right first buy — it handles drilling and screwdriving across typical home projects. Choose 12V only for light indoor work, add an impact driver for long screws, and get hammer mode only for masonry. Commit to one battery platform, because the batteries are the real long-term purchase.

A cordless drill is the first power tool most homeowners buy — and the one where marketing makes the decision hardest. Voltage numbers, brushless motors, battery platforms, and three different tool types that all look alike. This guide cuts through it with the five decisions that actually matter, matched to real projects. No fake reviews, no "best" rankings that change with affiliate payouts — just the specs and trade-offs.

Project to drill-type table

Start here, not with the spec sheet. Find your projects in the left column.

If your projects sit in the first two rows — as most homeowners' do — the rest of this guide is about choosing well within that range.

The specs, explained honestly

Voltage (12V vs 18V/20V Max). Voltage is roughly the tool's power class. Note that "20V Max" and "18V" describe the same battery class — 20V is the maximum charge voltage, 18V the nominal working voltage. Do not pay extra to "upgrade" from 18V to 20V Max within equivalent lines; they are the same thing.

Chuck size. Most homeowner drills have a 1/2-inch chuck, which accepts the bits you will actually buy. 3/8-inch chucks appear on compact 12V tools. Either is fine for home use — just know that 1/2-inch gives you more bit options.

Clutch settings. The numbered ring behind the chuck limits torque so you stop stripping screw heads and sinking fasteners too deep. More settings give finer control; for a beginner, its presence matters more than its count.

Brushless vs brushed motor. Brushless motors are more efficient (longer runtime per charge), run cooler, and last longer. Brushed motors are cheaper and perfectly serviceable. If a brushless kit costs only a little more, take it — over a decade of ownership, the efficiency pays back.

Batteries and amp-hours (Ah). Higher Ah means longer runtime, not more power. A kit with two compact batteries beats a kit with one big battery: you can charge one while using the other, and two batteries across future tools is the whole point of a platform.

Battery platforms: the decision that outlives the drill

Here is the industry's open secret: the drill is the cheap part. Over the years you will buy a circular saw, a reciprocating saw, a sander, maybe an outdoor tool — and if they all share batteries and a charger, each "bare tool" (no battery included) costs far less.

That is why the platform decision matters more than any single spec:

• Pick one major brand's 12V or 18V line and stay on it. The established platforms have dozens of compatible tools; obscure brands may not be around when you want tool number five.
• Match the platform to your heaviest future project, not your first one. If you might build a deck in two years, start on 18V now rather than buying twice.
• Two batteries and a charger in the kit is the minimum. One-battery kits look cheaper and then strand you mid-project.

Bits to start with

The drill is useless without bits, and the kit in the box is rarely enough. Buy these three things:

Tools needed

• Twist drill bit set (1/16 to 1/2 inch) for wood, plastic, and thin metal
• Driver bit set with Phillips #2, square, and Torx sizes plus a magnetic bit holder
• Eye protection — non-negotiable
• Tape measure and pencil for marking
• Clamps or a steady hand to hold small workpieces

Skip the 200-piece accessory kits at first: half the pieces never get used, and cheap bits dull fast. A modest set of decent bits outperforms a giant set of poor ones. Add masonry bits only if you bought hammer capability, and spade bits when you start drilling large holes in wood.

Five mistakes beginners make

1. Buying on voltage alone. An 18V drill from a weak line can be outperformed by a good 12V. Platform depth and build quality matter more than the number on the box.
2. One-battery kits. You will be waiting on a charger mid-project. Two batteries is the real minimum.
3. Ignoring the clutch. Drilling screws on drill mode (no clutch) strips heads and buries fasteners. Learn the clutch ring on day one.
4. Wrong bit for the screw. A Phillips bit in a Torx screw (or vice versa) cams out and destroys both. Match the bit to the fastener head.
5. No eye protection. It takes one flying chip. Glasses live with the drill, not in a drawer somewhere.

When a pro is the right call

A drill does not make every job DIY. Call a licensed electrician for anything inside the breaker panel or involving new circuits, and a plumber for supply-line work behind walls. Drilling into unknown walls is its own risk: use a stud finder and stay clear of where electrical and plumbing runs are likely, and stop immediately if the bit hits something that does not feel like wood or drywall.

Buy the drill for the projects you will actually do, commit to one battery platform, and learn the clutch before the first screw. That is the whole buying guide — everything else is marketing.