The stronger the capacity of the battery, the more autonomous it is. These are the batteries that offer the best characteristics to date: they are lighter than other types of batteries and hold a charge better. Generally speaking, cordless screwdrivers are equipped with lithium-ion batteries.
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It is recommended to have at least one spare battery so as not to be limited in autonomy.įor portable electric screwdrivers, you have to take into account the weight of the device with the battery, which can be around 2kg for a powerful electric screwdriver.
The battery power must be sufficient to guarantee the torque required for screwing however. They are also widely used for fixing plasterboard, or for dismantling or assembling auto body parts. They are limited by the autonomy and power of the battery.Ĭordless electric screwdrivers are particularly well suited for furniture assembly because they make it possible to move around the various elements without restrictions. Battery-powered electric screwdrivers are easy to handle and can be used in areas without a source of power. Why choose a cordless electric screwdriver?Ī cordless electric screwdriver can by used in all kinds of environments.Electric screwdrivers for assembly stations are generally supplied with 32 or 40 volts of direct current from the control box. That said, the cord connected to the source of power can represent a constraint in terms of its length (access to all the parts to be screwed or unscrewed) or even an accident risk if it crosses a passage area.Ĭorded portable electric screwdrivers are generally designed to operate on a single-phase mains supply of electricity. The advantage is that they can be used intensively. You can choose a corded model if there is a power source available close to the zone where the electric screwdriver is going to be used.Ī corded electric screwdriver is particularly adapted for use on an industrial assembly station, in a mechanical workshop, or when it is used in a restricted area.
They also have the advantage of being lighter as they don’t have battery weight. They generally offer significant tightening torque. For impact electric screwdrivers, the speed is indicated in counts per minute: it is between 3,000 and 50,000 cps/min.Ī corded electric screwdriver allows for intensive use. For corded electric screwdrivers, this is between 3,000 and 6,000 rpm (rotations per minute) and for cordless electric screwdrivers between 180 and 450 rpm. The rotation speed is an essential element, especially if you need to use your electric screwdriver regularly: corded electric screwdrivers generally have a higher speed of rotation than cordless ones. Generally, electric screwdrivers only have one rotation speed. Certain electric screwdrivers are called impact electric screwdrivers: they are used for intensive screwing/unscrewing. This can go from 3.6 volts (V) to 18V for the most powerful ones. For cordless electric screwdrivers, a high voltage allows for a longer battery life and avoids having to recharge the batteries too often. For cordless electric screwdrivers, the power is linked to the battery voltage. If the electric screwdriver is powered by an external transformer, the higher the supply voltage, the more powerful the screwdriver will be. For mains powered corded electric screwdrivers, that power depends directly on the power of the motor. The tightening torque is directly linked to the power of the screwdriver. The higher the tightening torque, the easier screwing will be, even in hard material. A high tightening torque means a strong screwing force. The tightening torque is another point it’s important to consider. It is important to pay particular attention to the screwdriver’s efficiency, especially if it needs to be used intensively. If it only needs to be used 2 or 3 hours a day, however, a cordless model might be appropriate, perhaps keeping an extra battery and a charger close by. If it needs to be used all day, it is better to choose a corded model. The second point it is important to define is the screwdriver’s frequency of use. For example, will you be using it frequently for construction work? New buildings or renovations? In a mechanical workshop? For furniture? On an assembly station? Choosing the right electric screwdriver depends on what you will use it for.
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