Features, choices and tips for operating cordless drills

Drill screwdriver will always be used in everyday life and at a large construction site. They differ not only in manufacturers, but also in technical characteristics and cost.

A cordless drill is a tool that does not work from the mains, but from the battery. With a battery, you can use the equipment anywhere, even where there is no power source. Such a tool is made in accordance with GOST. Among the main technical characteristics:

• power;
• torque;
• engine's type;
• battery capacity;
• chuck diameter;
• additional functions.

Among the not basic, but not less important:

• the size;
• dimensions.

The more revolutions the drill can make, the faster and better the user will get a hole.... When the user looks at the description of the drill, he can see the following indicators: 1/4, 3/8 and 1/2. When buying a drill, these must be taken into account as they relate to the chuck.

The chuck is the part of the drill that holds it. The first maximum size is important because it determines what diameter the bit can be used.

The size and type of battery plays a special role. The Ni-Cad type, despite its short life span, is superior to lithium and Ni-MH batteriesthat do not perform well in cold weather and drain quickly.

The larger the battery capacity, the longer it can work without additional charging.. The most progressive are considered 4 A * h, but the cost of such equipment is much higher.

Drills for 18 volts can be classified in different ways, for example, into two large groups: professional and household. Or do it by size: large, medium, small and mini drills. But speaking from the point of view of professional language, they can be divided by the type of battery.

According to the type of battery, there are four main types of drills on the market today, in the design of which there is a battery:

• lithium ion;
• nickel metal hydride;
• lithium polymer;
• nickel-cadmium.

Each type has its own differences. For example, lithium ion costs the buyer more expensive than others, but this is where its disadvantages end. The battery can hold a charge for a long time, is quickly saturated with energy, and does not lose capacity over time. This is exactly what is installed in professional drills.

Nickel-metal hydride have the same benefits, but are more environmentally friendly, therefore, manufacturers increasingly prefer to use them in sets for cordless drills.

Lithium-polymer is a modern solution, but they are not yet fully developed, therefore, they have a short service life.and.Most manufacturers claim that this barrier will soon be overcome.

Concerning nickel-cadmium batteries, they are loved for a five-year service lifewhich is superior to all other options. But they have a significant drawback - they cannot hold the charge for a long time and self-discharge, which does not please the user at all.

Among the huge number of drills, there are the best ones that are worthy of the user's attention more than others, since they differ not only in excellent technical characteristics, but also in reliability.

Like professionals and those who are used to doing housework on their own. This model is compact, equipped with an 18 volt battery, and provides the necessary traction when working on high density surfaces.

Recharge time only 30 minutes, the case is made of shockproof plastic, so the main components are well protected inside. The tightness guarantees good protection of the motor from dirt and moisture. The drill works stably even under extreme temperatures.

Another model, no less popular among professionals. It is a bestseller with over 1,500 satisfied customer reviews. This drill can do much more than one would imagine, judging by its dimensions. The powerful motor is protected inside a compact design that allows you to use the tool for many years without breakdowns.

Equipped with a rubberized handle, and the chuck is installed without play, which allows you to firmly hold the drill tool during operation. Working with such a drill is characterized by high accuracy. The maximum number of revolutions reaches 1800 per minute. But that's not all, the drill has a compact size and can perform the task, even in hard-to-reach places.

High speed drill. Has 2 speeds, well thought-out design, ergonomic handle. The user can quickly move from one speed to another and change settings. There is a built-in backlight.

The charging time is 30 minutes.

Has the ability to change the speed mode. Differs in the ability to twist the drill clockwise and counterclockwise. Equipped with a soft rubberized handle, so the drill is comfortable to hold while working. The user loved the model for its light weight and fast charging.

It has many speed settings to make your work more efficient. The model has 3 punch modes and 3 speeds.

The construction of the drill is a combination of two materials: plastic and metal. High-quality lighting allows you to work in hard-to-reach places, but due to the high power, the battery runs out quickly.

It has overload protection and a removable cartridge. The design has a rechargeable battery with a capacity of 2 A * h, so it is better to use the unit in everyday life, it may not be suitable for large tasks.

The manufacturer has provided an air-cooled charging function, it helps to reduce the temperature of the battery, which makes it last longer.

Equipped with a brushless motor, it means 20% more power. As a power supply 2 A * h, rechargeable battery.There are 20 clutch settings as well as a 2-speed gearbox that helps the user get the right torque level for tough jobs.

It boasts, like the previous model, a brushless motor that helps the drill penetrate the surface quickly and accurately. The design has 2 speeds, and if necessary, you can use the installed light bulb to illuminate the space.

The set includes two rechargeable batteries.

Shows 3 speeds, which are also possible thanks to the brushless motor. You can use such a tool to solve the most complex problems. The backlight helps you to see the work surface well. She has an automatic shutdown after twenty minutes.

When buying a drill, you should pay attention not only to additional functions, but also to the type of battery, the number of revolutions and the charging time. It is good when an indication is provided by the manufacturer in the design of the instrument, which allows you to estimate the amount of remaining energy..

The number of speeds and high torque are especially important when choosing a drill for professional use when faced with concrete and masonry work.

As for the chuck, of course, the keyless chuck helps to save time spent on changing the tooling. True, such equipment costs more, but this price fully justifies itself over time.

Some models are equipped with a special hook, thanks to which you can hang the tool on the belt and free your hands for a while. Whether to take this into account or not, the buyer decides for himself.

As for the motor, it is better to purchase a unit with a brushless motor.which is designed to reduce friction and drag. Its advantage is higher speed and increased power.

Experts give their advice on the operation of screwdrivers:

• non-observance of the instructions dictated by the manufacturer leads to a decrease in the life of the equipment;
• if you do not want the battery to fail and lose its capacity, then you cannot store it with metal products, confuse the poles and keep it on charge more than it should be;
• if you use the wrong equipment, you can break the engine by overloading it;
• you can start working with a drill only after the drill is on the surface.

For information on how to choose a cordless drill, see the next video.