Cordless screwdriver - a small purchase advice

As with many electrical appliances, the selection of cordless screwdrivers is huge. You can find out in detail how to find the right cordless screwdriver for your own purposes, and what criteria really matter when buying it.

Basic Criteria

First and foremost, always specify what you basically want to use with your cordless screwdriver. Should it be used primarily for screwing or drilling? The table below shows the appropriate device type for different purposes.

Field of applicationsuitable type
mainly screwing in and unscrewing screwsscrewdriver with pure screwing function
screwing in and out of hard materials, loosening tight nutscordless impact wrench
light drilling work in soft materialcordless drill / driver
simple drilling work in HouseholdCordless Impact Drills

Advantages and Disadvantages of Combination Devices

Always keep in mind that a cordless drill / driver of a drill is always inferior. So if you want or need to drill more frequently in the household, it makes more sense to purchase both devices separately.

A screwdriver designed for screwdriving is usually much lighter and more manageable. A medium quality impact drill will help you drill holes easier, safer and more accurately than with the drill function of the cordless screwdriver.

Only if you drill very little, and perform only simple drilling work (no holes in brick walls), a combination device can also be worthwhile.

Features

In the performance features, you should pay special attention to the following performance values:

  • Voltage
  • Torque
  • Idle speed
  • Battery capacity (at least 2 Ah are recommended)

In the case of torque, you generally use 30 Nm for domestic applications, values ​​of 50 Nm or More are more for professional use (or with impact wrenches).

Tips & TricksYou can also compare devices by their wattage in their performance. If the wattage is not specified, you can easily calculate it by multiplying the voltage and the amperage (not ampere-hours!) With each other. The result is the total power in watts.
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