How to choose a screwdriver for your home? Is it worth buying a cordless drill screwdriver?

Since there are many models with different characteristics in the stores, and manufacturers from different countries produce them, you need to understand the screwdrivers in order to make the right choice. Below is our website Vse-Sekrety.ru will tell about each characteristic and help you with a choice.

The article is divided into such items:

• Which screwdriver to choose


• How to choose a screwdriver according to the parameters of


• Should I buy a cordless screwdriver?

How to choose a screwdriver

• Professional or conventional screwdriver?

To begin with, you need to know exactly which jobs will be executed with this tool. For example, a couple of times a month you will collect or screw anything with it, so spend money on a professional model does not make any sense. If you regularly use a screwdriver, you need to pay attention to professional models that have more functions and higher power. As a rule, all amateur models have a torque of 15-20 Nm, but the power of professional models is on a completely different level - 130 Nm, and they can even drill even hard materials. To work with solid materials, you need to have a rotation speed of at least 1300 rpm. Conventional models operate at a speed of 400 revolutions, which allows you to perform the necessary work around the house.

• Powered or battery powered?

Almost all the models that are on the market currently operate on battery power, although you can find those that work from the network. Of course, it is much more convenient to use a cordless screwdriver, because you are not limited to the rooms in which the outlet is installed. Batteries are divided into lithium-ion, nickel-cadmium and so on, but you need to take into account the environmental qualities of materials. For example, lithium-ion batteries are environmentally friendly, but at high or low temperatures fail. Nickel-metal hydride can withstand a huge amount of charge( about 500), and nickel-cadmium can withstand even 1000 charges. In most screwdrivers, these batteries are installed, but manufacturers forget that cadmium is extremely harmful and toxic to the human body.

There are also models in which several types of batteries are installed. There are differences between batteries, for example, in charging. All professional tools come with expensive chargers, so it only takes one hour to fully charge. Disadvantages of amateur models is a long charge - at least 3-7 hours. The duration of the work depends on the capacity of the battery. Choose a model where the battery capacity is very high.

• Completion

There are different combinations of screwdrivers, but more often it is either a separate tool or a model with a large set of attachments. It is better to choose a model with separate nozzles, since during work it is necessary to deal with different screws of screws. They differ in shape, are tetrahedral and straight, so you will need to use different attachments.

How to choose a screw driver for

• parameters Torque and speed of rotation

To ensure that the engine does not burn out, modern couplings are used that slip so that the tool does not fail under high load. In most cases, this is a lock called the maximum torque, it works with characteristics of 5-10 Nm, but this is enough to twist very tight anchors and engine safety during high loads. Another value of the threshold will suit you if you work with hard materials, for example, concrete or steel, or if you need to make a hole with a larger diameter.

Screwdrivers with an incredibly high torque are considered very versatile, because you can twist the screws and drill materials. Drills, which have a small torque, are suitable only for screwdriving work, as well as drilling wood and other soft materials. In addition to the torque in the selection, you need to look at the engine under high load. Notice how well it holds the turns and does its power match the one the manufacturer declared? Of course, this is not easy, because you need to use the device and have experience. If you are going to buy a professional tool, then there is a place in the store where you can check the device and its operation. Make a pair of holes in different materials or tighten the screws, this is enough to make sure the quality of the work.
About the speed of rotation is to say that many are looking for a model with increased speed, but they do not know why they need it. To wrap screws, you need a speed of 500 rpm, and to comfortably drill, you need a speed of 1300 rpm. Too much speed is needed only to work with very hard material. Also models with adjustable engine speed are very preferable, but they do not have to be searched for long - all modern screwdrivers allow you to adjust the power. This will be necessary for drilling, because with slow rotation it is much easier to make a hole in the right place, besides the risk that the drill can come off minimal. Pay attention to the presence of a reverse stroke, because the drill may get stuck or the screw may spin too tightly.

• Battery quality

To date, the most popular models are equipped with a nickel-metal hydride battery. In Europe, all screwdrivers are equipped with just such batteries because of their ecological purity. As everyone knows, cadmium in its composition has toxic substances and allergens, which adversely affect the health status. Almost all such batteries can withstand at least 1000 charges, while ecologically clean batteries are charged only 500 times. Modern drills and screwdrivers can work directly from two batteries, so do not forget to specify in the store whether you can choose the right battery.

Nickel-metal hydride batteries are very small, however, they practically do not withstand high voltage and react quickly to the effect of temperature and its differences. This is not a serious problem if you do not have to work in the cold or in the hot sun.

There are other batteries - lithium, their power is extremely high, if compared with nickel, especially since they have no memory effect. But since at a lower temperature they often fail, the demand for them is extremely low, and in shops screwdrivers with a lithium battery are very rare. The memory effect can be annoying during operation, it occurs only in nickel batteries. Every time you charge a battery, you will lose its capacity, but only in cases where it has not discharged completely. Therefore, before each charge you need to completely discharge the battery, it is not very convenient, but the owners of the tools found a way out of the situation and began to use just two batteries. Of course, the capacity of the two batteries must be high so that you can work longer. Most semi-professional and professional models come complete with different batteries, one can be installed in a drill, and the other can be recharged. That's why the professional model is not much different from the stationary model, because the spare battery will be charged as much as the already installed battery.

You also need to pay attention to the speed of charging the battery. All professional models are charged extremely fast, usually in 50 minutes, because the charger is much more powerful. But conventional models are charged for a long time, about 3-6 hours.

• Tool manufacturer

Like in everything else, very much depends on the tool manufacturer. If you are picking a simple screwdriver to work at home, then you need to look at the models from Hitachi, Hammer and Bosch. Almost all professional models are manufactured by the manufacturer Dewait, they are the most profitable in terms of quality and price. But immediately take into account that the popularity of the manufacturer doubles the cost of the tool, so you can look at the less known, but well-proven companies. Also do not forget to look at the list of functions, there can be a lot of them, and most of them you will not use in the process of work. They significantly increase the price, and at the same time are completely useless.

Should I buy a cordless screwdriver?

It's possible that the battery model will not work for you, so check out its advantages and disadvantages. You can work directly near the source of charging, although it is not uncommon for work to be done in a remote location. If you work exclusively at home or in places where the socket is located nearby, it is better to choose a model with power from the mains. Despite the mobility and convenience of the battery model, you need to know about the drawbacks:

1. Due to the fact that the battery is installed in the case the size and weight of the device increases, it is not very convenient if you have to work a canopy.


2. When the battery starts to discharge, you will feel a decrease in power and performance, which will also cause great discomfort.


3. As soon as the battery is discharged, you will have to wait for it to charge, which takes time.


4. Due to the fact that the battery loses its charge with time, it is necessary to reconcile that the working time will also decrease, and sooner or later you will have to buy a new power source.

But if you consider all these nuances and understand the peculiarities of the battery models, you can buy a model that will work without connecting to the mains for a long time. Below we will talk about the correct choice of such a screwdriver.

1. The preparation time for operation via the autonomous mode depends on the voltage, it is within the range of 9-24 volts, and is responsible directly for the power of the instrument. But keep in mind that the higher the voltage, the greater the weight of the battery and the screwdriver, so the hands will quickly get tired during operation.


2. There is a difference between the time and the current that determines the duration of the charge conservation.


3. Different types of batteries, which have already been mentioned above, have disadvantages and advantages. Approximately 500 recharges are enough for Ni-MH batteries, besides they are small in size and there are no dangerous substances and compounds such as Ni-CD.But Ni-CD batteries can withstand at least 1000 charges. With high current strength, these models can fail, which is also not very convenient. The Li-Ion battery has a high power, but due to temperature changes, it can fail. At a high cost of this model, this is a significant drawback.

New models from leading manufacturers appear monthly, in which the work of all types of autonomous power is optimized. You can find tools with a battery that has a fractional charging mode. This is very convenient, because while one of the batteries is running, the other is charging and getting ready for work. You do not have to wait for the battery to charge, since you can easily change it at any time.

Before buying, be sure to determine why you need a screwdriver and in which cases you will use it. Next, review the features, ergonomics, reliability and cost, then check the tool. Do not overpay for a professional model if you are going to use a screwdriver a couple of times a month at home.

If you have any questions - ask them in the comments to this article!