Guidetrapani, avvitatori, perforatori, tassellatori, picconatrici
How to choose a cordless drill: 2026 buying guide
Cordless drills are among the best-selling tools on Amazon, and also one of the easiest categories to get wrong. This guide explains which numbers actually matter and when a cheaper model is enough.
In this guide3
Voltage and torque: the two numbers that matter
Voltage (12 V, 18 V, 20 V) describes the battery class, not the power of the drill. A modern 12 V tool can outperform an old 18 V one. Torque, measured in Nm, decides whether the drill can drive a long screw or bore into a wall.
For home DIY, 30-45 Nm is enough. For consistent drilling into masonry, hardwood and metal you want at least 50-60 Nm. Above 70 Nm you enter professional territory, where chuck quality and heat management matter too.
Chuck, hammer mode and speeds
A 13 mm keyless chuck accepts almost every common bit and is the most versatile choice. Hex-shank models are lighter but limited to hex bits.
Hammer mode is for masonry and brick, not reinforced concrete: that requires an SDS rotary hammer. Two mechanical speeds and an adjustable clutch improve precision when driving small screws.
Batteries: how many and which type
Lithium-ion batteries have no memory effect and can be recharged at any time. Be sceptical of very high capacities at very low prices: 2 Ah is normal, 4-5 Ah only helps if you work away from a socket for long periods.
If you already own tools from one brand, stay on the same battery platform. Two included batteries are worth more than a single 5 Ah pack, because they let you keep working without stopping.
Frequently asked questions
12 V or 18 V for home use?
For driving screws and drilling wood, a light 12 V drill is often enough and easier to handle. If you drill masonry or work for long sessions, choose an 18 V model with at least 50 Nm.
Do I always need hammer mode?
No. It is for masonry and brick. For wood and metal, turn it off: it reduces precision and drains the battery faster.
Does brand matter?
Mostly for support and long-term battery availability. Lesser-known brands can be fine for occasional use, but check that replacement batteries are sold separately.
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