How to choose a cordless drill: voltage and torque
The right cordless drill depends on voltage, torque settings and chuck type. This guide explains how 12 V tools for fine assembly differ from 18 V machines for the workshop, and which chuck suits your bits.
View cordless drillsWhich voltage suits which task?
Voltage (volts) sets the available power and therefore the use profile. 12 V tools are light and compact, ideal for fine assembly and electronics, while 18 V machines deliver the reserves for hard workshop work in wood and metal.
Voltage tells you nothing about runtime. That depends on the amp-hour capacity (Ah) of the battery: a 2.0 Ah cell covers assembly work, while continuous use calls for 4.0 to 5.0 Ah.
How do the torque settings work?
The torque collar (slip clutch) limits the force when driving screws and stops screw heads from stripping or workpieces from being damaged. When the screw reaches the set torque, the clutch disengages audibly.
For fine assembly, many low settings matter so small screws are not overdriven. The drill symbol bypasses the clutch and releases full torque for drilling.
- Low settings (1‑5): small screws, soft materials, electronics.
- Medium settings (6‑15): furniture, drywall, general assembly.
- Drill symbol: full power with no cut-out for drilling wood and metal.
- Hammer symbol only on hammer drills for masonry and concrete.
- Soft joints in soft material, hard joints in metal - follow the maker's rating.
Which chuck type do you need?
The tool holder decides which bits and drill bits fit. The classic keyless chuck takes round and hex shanks from 1 to 13 mm, while the 1/4 inch hex holder swaps bits without any tool.
A metal chuck holds its concentric running accuracy longer than plastic and is the better pick for metal work. For pure screwdriving with bits, the lighter hex holder is enough.
Frequently asked questions
Is a 12 V cordless drill enough for the workshop?
For fine assembly, furniture and light work, yes. For regular drilling in metal or large screws in hardwood, an 18 V tool with more torque reserve is the better choice.
What do the numbers on the torque collar mean?
They set the slip clutch stages. The higher the number, the more force is transferred before the clutch disengages. The drill symbol bypasses the clutch for full torque.
Chuck or bit holder - which is better?
The chuck (1‑13 mm) is flexible for round drill bits and bits, while the 1/4 inch hex holder swaps bits faster. For mixed work a chuck is the more universal choice.
How many Ah should the battery have?
2.0 Ah is enough for assembly and fine work; for continuous use and metal drilling 4.0 to 5.0 Ah makes sense. More capacity means more runtime but also more weight.
Looking for the right cordless drill?
We stock cordless drills from 12 to 18 V with finely graded torque settings and matching chucks for workshop and fine assembly.
Right system
Battery platforms you can share across several tools.
Fine grading
Torque settings for fine assembly and hard joints.
Correct holder
Chucks and bit holders for every shank.
Expert advice
Our specialists help you make the choice.