Brushless vs Brushed Motor: The Spec That Actually Matters
The 30-Second Version
A brushed motor uses physical carbon brushes that press against a spinning commutator to deliver power. The brushes wear down over time, create friction, and waste energy as heat.
A brushless motor uses an electronic controller and magnets instead. No brushes = no friction, no wear, more power from the same battery, and longer tool life.
In 2026, always buy brushless. The price gap has shrunk to $20-40 on most tools. The efficiency gain alone pays for the difference in battery runtime within months.
How Each Motor Works
Brushed Motor
Inside every brushed motor: a rotating copper winding (the armature), fixed magnets on the outside, and two carbon blocks (brushes) that press against a segmented copper ring (commutator) to deliver electricity to the spinning part. The brushes physically touch the commutator. Every rotation, they rub. Over hundreds of hours, the carbon wears down to dust. This is why old tools lose power — the brushes are gone.
Brushless Motor
A brushless motor flips the design: the copper windings are fixed to the outside (stator), and the magnets spin on the inside (rotor). An electronic controller — a tiny circuit board — switches current to the windings in sequence, creating a rotating magnetic field that pulls the magnets around. No physical contact. No friction. No wear. The controller also monitors the motor's position and adjusts power in real time — which is why brushless tools feel more responsive under load.
Side-by-Side Comparison
| Brushed | Brushless | |
|---|---|---|
| Efficiency | ~75% | ~90% |
| Power from same battery | Baseline | +25-50% more runtime |
| Wear parts | Brushes (replace every 50-100 hrs) | None |
| Heat | Hot (friction) | Cooler |
| Responsiveness | Slow to ramp up | Instant torque control |
| Size | Bulkier per unit of power | Smaller, more compact |
| Price premium | Baseline | +$20-40 most tools |
| Lifespan | Shorter (brushes wear) | Much longer |
When You Can Still Buy Brushed
Two scenarios where brushed still makes sense in 2026:
- Tools you use twice a year. A corded angle grinder you pull out once a summer to cut a piece of rebar. You'll never wear out the brushes. Save the $40.
- Ultra-budget cordless tools. The Ryobi brushed drill at $39 is half the price of the brushless version. If you drill 20 holes a year, you'll never notice the difference.
For everything else — drills, impact drivers, circular saws, reciprocating saws, anything cordless you use regularly — brushless is not a luxury. It's the smarter purchase.
The Efficiency Math
A 5.0Ah battery on a brushed drill gives you about 45 minutes of heavy use. The same battery on a brushless drill gives you about 65 minutes. That's nearly 50% more holes per charge.
Over the life of the tool, you'll buy fewer replacement batteries and spend less time waiting for batteries to charge. The $30 you saved buying brushed evaporates the first time you need a second battery to finish a project without stopping.
How to Tell If a Tool Is Brushless
Manufacturers make it clear — brushless is a selling point. Look for:
- DeWalt: "Brushless" or "XR" in the model name
- Milwaukee: "FUEL" = brushless. Non-FUEL = brushed
- Makita: "BL" in the model number = brushless
- Ryobi: "HP" (High Performance) = brushless
- Bosch: "EC" (Electronically Commutated) = brushless
- Ridgid: "Brushless" in the name or model starting with "R86"
If it doesn't say brushless anywhere on the box or listing, it's brushed.
The Bottom Line
In 2026, the $25-40 premium for brushless is the best money you'll spend on any power tool. More power. More runtime. Longer life. Unless you're buying a tool you'll use three times a year, go brushless.
FAQ
Can I upgrade a brushed tool to brushless?
No. The motor, controller, and tool housing are completely different. This isn't a part swap — it's a different tool.
Do brushed tools still work fine?
Yes. A brushed DeWalt drill from 2015 still drills holes. The question isn't whether brushed works — it's whether you should pay for it in 2026 when brushless costs slightly more and performs significantly better.