Walk into any tool shop and you’ll see ‘BRUSHLESS’ stamped on every premium power tool. The price tag is always higher — sometimes 30–50% more than the brushed version of the same tool. But is it actually worth the extra money, or is it just marketing?
How Brushed Motors Work
A brushed motor uses physical carbon brushes that press against a spinning commutator to deliver electrical current to the motor coils. It’s simple, proven technology that’s powered tools for decades. The downside is friction — those brushes create heat, wear down over time, and waste energy. The RS Components engineering guide has a detailed technical breakdown if you want the full picture.
How Brushless Motors Work
A brushless motor eliminates the physical brushes entirely. Instead, an electronic controller switches the magnetic fields in the motor coils using sensors that detect rotor position. No friction, no wear, no energy wasted as heat. The motor also adjusts its speed and power output based on the load — it automatically works harder when driving a screw into hardwood and eases off in softwood. This intelligent load-sensing is arguably the biggest practical advantage.
Real-World Differences
| Feature | Brushed Motor | Brushless Motor |
|---|---|---|
| Battery life per charge | Baseline | 25–50% longer |
| Power output | Good | 10–25% more torque |
| Motor lifespan | 500–1,000 hours (brush replacement needed) | 10,000+ hours |
| Heat generation | Higher (energy lost as heat) | Significantly lower |
| Weight | Slightly heavier | Slightly lighter (compact motor) |
| Price (typical drill) | £60–£120 | £100–£200 |
| Maintenance | Brush replacement eventually | None |
| Speed control | Basic (trigger-proportional) | Electronic (load-sensing) |
When Brushless Is Worth the Premium
- Drills and impact drivers — you use these constantly, so the extra battery life and longevity pay for themselves quickly
- Any tool you use for hours at a stretch — circular saws, angle grinders, reciprocating saws. The longer runtime per charge makes a genuine difference on a full day’s work
- If you’re buying into a battery platform — investing in brushless from the start means your tools will outlast the platform itself
- Professional or heavy DIY use — the lifetime cost of a brushless tool is lower because it outlasts brushed equivalents by a wide margin
- Compact spaces — brushless motors are smaller, making the tools more manoeuvrable in tight spots
When Brushed Is Perfectly Fine
- Tools you use rarely — if you pick up a tool a few times a year, brushed is perfectly adequate
- Tight budget — a good brushed drill beats a cheap brushless one every time. Quality matters more than motor type
- Corded tools — the battery life advantage doesn’t apply, so the benefit is mainly longevity and slightly more power
- One-off projects — if you’re building one deck and don’t plan to use the tool regularly afterwards
The Battery Life Difference Is Real
This is the advantage you’ll notice most in daily use. Because a brushless motor wastes less energy as heat, more of the battery’s charge goes into actually doing work. In real-world testing by Pro Tool Reviews, brushless drills consistently delivered 25–50% more screws per charge than their brushed counterparts using the same battery.
When you’re halfway through a project and the battery dies, that extra runtime isn’t a spec-sheet number — it’s the difference between finishing the job and waiting an hour for a recharge.
What About Corded Tools?
For corded tools, the brushless advantage is less dramatic since battery life isn’t a factor. You still get a longer-lasting motor, slightly more power, and better heat management. But the price premium is harder to justify for corded tools that might last 15 years even with brushed motors. If you’re buying a corded angle grinder or router, the quality of the build, bearings, and switch matters more than the motor type.
A Note on ‘Brushless’ Marketing
Not all brushless tools are created equal. Some budget brands use basic brushless motors without the sophisticated electronic speed controllers that make premium brushless tools so impressive. A £40 brushless drill from an unknown brand might technically have a brushless motor but lack the intelligent load-sensing and efficiency optimisation of a DeWalt, Makita, or Milwaukee equivalent. Stick to established brands when paying the brushless premium.
The Honest Recommendation
For your primary, everyday tools — drill/driver, impact driver, circular saw — buy brushless. The premium pays for itself in battery life and lifespan within the first year of regular use. For niche tools you use occasionally (heat gun, detail sander, rotary tool), save the money and buy brushed.
And one last thought: the battery platform you choose matters more than brushed vs brushless. Pick the platform first based on our battery platform comparison, then decide where to spend the brushless premium within that ecosystem.
