A cordless drill belongs in every household – for furniture, shelves, lamps and small repairs. But one question always comes up when buying: are 12 volts enough or should it be 18 volts? In this guide we explain the difference in plain words and show two popular sets as examples.
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Quick comparison
| 12 volts (example: Bosch GSR 12V-15) | 18 volts (example: Einhell TE-CD 18/40) | |
|---|---|---|
| Strengths | Light and handy | More power, hammer drill function |
| Weight | approx. 0.95 kg incl. battery (according to manufacturer) | heavier than 12-volt tools |
| Torque settings | 20+1 | 21+1, up to 40 Nm |
| Chuck | 1–10 mm | 13 mm keyless chuck |
| In the set | 2 batteries, charger, 39-piece accessories, bag (depending on offer) | 2 batteries (2.0 Ah), charger, 64-piece accessories, case |
| Suits | Furniture assembly, small repairs, overhead work | Drilling into masonry, larger projects |
12 volts: light and handy
12-volt cordless drills are compact and light in the hand. That is pleasant when you drive in many screws, work overhead or inside narrow cupboards. For furniture assembly and most household jobs the power is quite enough.
One example is the Bosch Professional GSR 12V-15: two gears, 20+1 torque settings and, according to the data sheet, around 0.95 kg including battery.
👉 View the Bosch Professional GSR 12V-15 set
18 volts: more power and hammer drilling
18-volt tools have more power for long screws and larger holes. Models with a hammer function can also drill into masonry – handy if you want to set wall plugs. In return they are a bit heavier.
One example is the Einhell TE-CD 18/40 set: according to the manufacturer up to 40 Nm, 21+1 torque settings, hammer function, two 2.0 Ah batteries and 64-piece accessories in a case. The batteries fit many other tools of the same battery system.
👉 View the Einhell TE-CD 18/40 set
What to look for when buying
- Two batteries: One works while the other charges – no forced breaks.
- Hammer function: Only needed if you want to drill into stone or concrete.
- Weight: The lighter, the more comfortable for long jobs and overhead work.
- Battery system: If you plan more tools, make sure the batteries fit them.
- Accessories: Bits and drill bits in the set save an extra purchase.
The right accessories
The right bit for almost every screw comes, for example, in the Bosch 32-piece screwdriver bit set. If you are looking for a complete basic kit, you will find it in the 238-piece tool trolley.
You can find more ideas in our guide Gift ideas for DIY enthusiasts.
Frequently asked questions
Are 12 volts enough for furniture assembly?
Yes. For furniture, shelves and most household jobs, 12-volt cordless drills are well suited and pleasantly light.
When do I need 18 volts?
If you often drive in long screws, drill larger holes or want to drill into masonry with the hammer function.
Can I drill into concrete with a cordless drill?
Only with a hammer function, and even then rather for smaller holes. For a lot of concrete, a rotary hammer is better suited.
Is a cordless drill a good gift?
Yes, especially as a set with two batteries and accessories – then it is ready to use straight away.
All information without guarantee and according to manufacturer specifications. Current prices, features and reviews can be found with the respective provider. The images are illustrative.