How many volts to take a screwdriver. Battery capacity

Which screwdriver is better to choose: 12, 14 or 18 volts?

Squads have indicators that few people pay attention to. Meanwhile, for professionals, they are almost the first place. This article will tell you what a screwdriver 12, 14 or 18 volts, better and why.

To make a choice in the direction of a reliable and high.Quality screwdriver, you need to know some important characteristics of the tool.

Types of engines

Engines used in screwdrivers are divided into 2 types. Brush and brilliant. In the brush (collector) version there are brushes for removing electric current. The advantage of such a motor is a low price. The minus will have a low percentage of the useful coefficient.

Brightless (inverter) engines have collected more positive points:

• Long life.
• Tolerance of irregular overload.
• Wide range of speed of rotation.
• Efficiency above the brush engine by 30%.
• The speed is not reduced when the load on the cartridge.
• There is no sparking, therefore it can be used in rooms of increased fire hazard.

The indicator of the torque

The minimum value of the torque in the screwdrivers. 6 Nm. Household modifications have an indicator from 8 to 23 nm. Semi.Professional tools go with the moment from 80 to 110 nm. In professional units, the size of the torque begins from 110 nm And reaches 200 Nm.

Where screwdrivers are used and how they are arranged

This tool is actively used by the owners of cottages and those who live in their own apartment. No matter what construction or repair work is carried out, you can not do without a screwdriver. Any home master who is accustomed to rely on his strength and skill will say about this. And professional builders also certainly have a screwdriver in their arsenal. It is convenient for them to fix plasterboard sheets during finishing work. And furniture without this tool is completely impossible to collect.

Consider the elements that make up the screwdriver:

How to convert cordless drill’s 14.4 Volts Ni-Cd battery into Li-on 18650 battery / Hx-4S-A01 BMS

• Electric motor rotating at a certain speed.
• Planetary type gearbox transfers an effort to a spindle, which is equipped with a clamping cartridge.
• A clutch is attached to the gearbox, which regulates the torque.
• To attach the nozzles called bits to the shaft of the engine, there is a clamping cartridge.
• The electronic control system is equipped with a button for starting the device, as well as the reverse switch.
• The battery is usually used as a power source. Therefore, this type of device is convenient to use where there are no electrical outlets, as well as in places where the cord will not reach.

Now let’s list for what work it is advisable to use a screwdriver:

• Screwing and unscrewing a variety of fasteners. These are self.Tapping screws, bolts, and screws, and, of course, screws.
• When installing this device, you can tightly tighten dowels and anchors.
• The tree, both soft and solid, is perfectly drilled with screwdrivers.
• They can and the metal surface can be drilled.
• This device is quite possible to cut the thread in metal (and not only) details.

About screwdrivers

The choice of screwdrivers is a difficult process. Because on the market this tool is represented by a huge assortment. Firstly, it should be noted that he has a basic configuration-a pistol. And this is the only criterion that is the same for all models. Accordingly the same and the filling of the tool. The case is made of either shock.Resistant plastic, or in the form of an entire.Metal shape.

There is another obligatory element in each screwdriver. This is a rattle, it is also a mechanism for limiting torque. That is, if the limit of the load on the instrument exceeded the required parameters, a characteristic sound is made that says that the work must be stopped.

So, what you need to pay attention to when choosing a screwdriver for the house.

Which screwdriver to choose

After you got acquainted with all the technical characteristics, the question arises, Which screwdriver to choose.

Another rather interesting sphere where screwdrivers are used is fishing.

Often, lovers of winter fishing use a screwdriver for drilling holes, which significantly accelerate the process of ice drilling.

But what screwdriver for ice discovery to choose? Definitely, for an environment where there is no access to electric sockets, you need to take a battery tool.

It is also important to have another spare block and so that both batteries during fishing are stored in warmth, for example, under clothing. This will avoid their excessive cooling and loss of capacity.

How to choose a battery screwdriver

Let’s start from that, how to choose a battery screwdriver for home.

In battery tools, the energy source is a battery that is charged from an electric outlet. A big plus of battery tools is their mobility. You will not need to transfer your workplace closer to the outlet or through an electric extension cord to “pull energy” to the right place.

You often ask, how to choose the right screwdriver and with which battery to choose a screwdriver. Everything is very simple, since one of the most important parameters in battery boat are capacity.

For example, a two-speed battery of the Yato YT-82788 company has a battery capacity of 2 Ah (very good in its class). Despite the fact that this screwdriver is charged in just 60 minutes. It is also worth noting that such a battery screwdriver performs as many as three functions: drilling, shock drilling and of course screwing.

Therefore, if you still doubt, What to choose a screwdriver or shock drill, then this one tool can perform the functions of these two tools.

But if you still doubt your choice and do not know, how to choose a battery screwdriver, In the online store of the Polish distributor Yato, managers will help with the choice of a quality tool.

How to choose a network screwdriver

Compared to the battery tools, the network screwdriver is famous for much greater performance, as well as the fact that it can work without a break.

But still, before, how to choose a good network screwdriver, you need to familiarize yourself with all its technical indicators.

If you are faced with a choice, what inexpensive network screwdriver is better to choose, it is recommended to purchase a tool at least with average power and ergonomic.

What screwdriver to choose brush or brilliant

The principle of work, like the screwdriver itself, has not changed for many years. But, not so long ago, brownient models of screwdrivers appeared.

According to studies, with the same battery capacity, a brilliant screwdriver works much longer without recharging, as well as its mass and size less than brush. But for each product its own merchant and the choice is yours.

What power to choose a screwdriver

Its performance is directly related to the power of the screwdriver.

The greater the voltage and capacity of the battery, the greater its weight and size. For example, a battery of a 12-volt screwdriver can consist of only three lithium-ion cans, and for an 18-volt battery they need at least p’yat. Accordingly, the weight and size of the tool immediately increase. Therefore, if you cannot choose, which screwdriver to choose, 12 or 18 volts, then think about convenience in using and assigning the tool.

Additional functions

As usual, these functions are not mandatory, but they significantly increase the convenience of using. If they raise some price, then not significantly, and some are quite noticeable. To choose the most inexpensive screwdriver, you can do with a minimum. A reverse and the presence of a place of work to illuminate the place. The rest, of course, are useful, but more suitable for professionals.

Some additional functions are very useful

Reverse or reverse

The presence of this option allows you to twist a screw or a drill stuck in the material. The change in the direction of rotation occurs when the polarity of the power supply changes, which is carried out through a special button. It is usually installed near the starting lever.

Examples of the location of the reverse button in a screwdriver

Most often, the move button has three positions: on average, the tool is blocked. This increases safety: if you accidentally touched the lever, the screwdriver will simply stop, and will not immediately rotate in the opposite direction.

The backlight of the working area

A very convenient option that does not really affect the price of a screwdriver. The illumination of the place of work. With good illumination, it is much easier to control the tool.

Lighting the zone of work. A useful additional function of a screwdriver

A LED is built into the handle or tool case near the cartridge, which is lit when the start button is pressed. If you want to choose a screwdriver that it is convenient to work, see that there is a place of place of work.

Battery charge indicator

If you decide to choose a screwdriver with a battery, it would be nice to have a battery charge indicator. These are LEDs of different colors. Green, yellow, red, which are located on the case. If green is burning. The charge is full, if red. Almost discharged.

The location of the indicator depends on the company, but is usually on the thickening of the handle, in the same place as the lighting LED, or in the upper part of the case.

Automatic supply of screws

Such screwdrivers are also called store. This option is useful to professionals, especially those who work with drywall, where the fasteners should be put in a little step. Self.Tapping screws are mounted on a special tape, refuel into the guides, automatically filed to the holder.

Screwdrivers with automatic supply of fasteners

This option can be implemented in two ways: there are precisely store screwdrivers (in the photo on the left) and there are nozzles for a regular screwdriver. For home use, the second option is preferable, since the tool can work as a drill or on a reverse. Shop screwdriver. Highly specialized equipment for professional use.

How to choose the right screwdriver: types of engines, torque indicator

To find out what is better. A screwdriver 12, 14 or 18 volts, first you need to familiarize yourself with their views and parameters. Tools by type of engine are Brush (collector) and brilliant (inverter). The main plus of the first variety is a small price. But the brush models have a low useful action coefficient. Professionals advise to purchase for a home Brightless screwdriver, since he has:

Such a tool is expensive. The screwdriver is chosen based on indicators of torque (Newton-meters (n/m)), which determines which load can be subjected to a tool.

Brightless screwdriver has high efficiency

• Hard. Maximum force that is more often used for drilling.
• Soft. The minimum with which the fasteners are screwed.

Depending on the values, they work with materials of various densities. Screwdrivers with different torque are suitable for a certain type of work:

• Up to 10 n/m. For the repair of household appliances, toys and interior items.
• 20-30N/m. For twisting screws in different materials.
• 30-40N/m. For drilling hard surfaces of wood, concrete and metal.
• 50-130N/m. Performing any volumetric and complex work.

Battery or network?

How to choose a good screwdriver or drill-shuruvret by type of power? They are divided into:

The former eat from the network, the latter. From the battery, and others can work as well as this and this.

Brand Drill Survender for the letter “H” with a battery voltage 16 volts. Photo taken from the site: https: // www.Youtube.COM/ channel My Gadget. Link to the video: https: // www.Youtube.COM/Watch?V = jsumchftys0

Network tools are charged from sockets. Compared to battery, they have higher power and low weight. But network tools have a significant drawback. Dependence on the outlet. If it is far away, the wires are confused under the feet of workers. For some builders, this is not a hindrance.

Expert opinion Andrey Savin, Prostrab, g. Voronezh

Choosing between the battery and the network for working on the roof, I prefer a network tool. Even if he jumps out of his hands, he will not fly anywhere and remains hanging on the wire. And the drill-shuruvret on the batteries in such a situation will fly down and can be damaged. It is for this reason, in my opinion, it is inconvenient to use a wireless drill-shuruvret on the roof. The choice between a network tool and a battery depends on the habit of a particular builder. In order to drill holes in the metal, it is better to choose a drill-spray, where the speed speed is regulated and it is possible to change the nozzles. When working with furniture, you can use a regular screwdriver. The same tool with speed adjustment and rattle is suitable when working with drywall and concrete. I emphasize once again that the availability of speed and ratchet adjustment is important here, because if you make speeds of revolutions a little more, you can praise and spoil the material.

Battery screwdrivers and drills-shuruvriva operate on batteries, so they do not depend on the presence or absence of electricity at the facility. They are used at any time of the year when working at altitude (not all experts are afraid of the fall of the tool) and on the street. The disadvantages of the tools on the battery include dependence on charging, so experienced builders for such cases take a spare battery. Amateur screwdriver working from the battery, in power loses to its network analogue. But professional screwdrivers on batteries, as a rule, differ in their power for the better.

Brand Drill to the letter “D” with a battery voltage 18 volts. Photo taken from the site: https: // www.Youtube.Com/channel My Gadget Link to the video: https: // www.Youtube.COM/Watch?V = jsumchftys0

Expert opinion Sergey Postarev, master, g. Nizhny Novgorod

In the summer, working on the roof, it is better to use a drill-shuruvret on batteries. In terms of functionality, this is a more universal tool than a standard screwdriver. For me personally, it is convenient in operation. But if you do not have a drill-spray, you can do with an ordinary screwdriver on batteries. But in cold weather the battery is discharged, so it is more advisable to work with a network tool.

Battery drills are used to twist and twist screws, bolts, screws and screws. With their help, a tree is drilled, panels made of drywall and plastic, and also not very thick metal. There are three speeds in the design of many drums. In the first, this tool is used as a screwdriver with a large torque, on the third. As a drill. He has a wide area of ​​use.

Battery or network?

How to choose a good screwdriver or drill-shuruvret by type of power? They are divided into:

The former eat from the network, the latter. From the battery, and others can work as well as this and this.

Brand Drill Survender for the letter “H” with a battery voltage 16 volts. Photo taken from the site: https: // www.Youtube.COM/ channel My Gadget. Link to the video: https: // www.Youtube.COM/Watch?V = jsumchftys0

Network tools are charged from sockets. Compared to battery, they have higher power and low weight. But network tools have a significant drawback. Dependence on the outlet. If it is far away, the wires are confused under the feet of workers. For some builders, this is not a hindrance.

Expert opinion Andrey Savin, Prostrab, g. Voronezh

Choosing between the battery and the network for working on the roof, I prefer a network tool. Even if he jumps out of his hands, he will not fly anywhere and remains hanging on the wire. And the drill-shuruvret on batteries in such a situation will fly down and can be damaged. It is for this reason, in my opinion, it is inconvenient to use a wireless drill-shuruvret on the roof. The choice between a network tool and a battery depends on the habit of a particular builder. In order to drill holes in the metal, it is better to choose a drill-spray, where the speed speed is regulated and it is possible to change the nozzles. When working with furniture, you can use a regular screwdriver. The same tool with speed adjustment and rattle is suitable when working with drywall and concrete. I emphasize once again that the availability of speed and ratchet adjustment is important here, because if you make speeds of revolutions a little more, you can praise and spoil the material.

Battery screwdrivers and drills-shuruvriva operate on batteries, so they do not depend on the presence or absence of electricity at the facility. They are used at any time of the year when working at altitude (not all experts are afraid of the fall of the tool) and on the street. The disadvantages of the tools on the battery include dependence on charging, so experienced builders for such cases take a spare battery. Amateur screwdriver working from the battery, in power loses to its network analogue. But professional screwdrivers on batteries, as a rule, differ in their power for the better.

Brand Drill to the letter “D” with a battery voltage 18 volts. Photo taken from the site: https: // www.Youtube.Com/channel My Gadget Link to the video: https: // www.Youtube.COM/Watch?V = jsumchftys0

Expert opinion Sergey Postarev, master, g. Nizhny Novgorod

In the summer, working on the roof, it is better to use a drill-shuruvret on batteries. In terms of functionality, this is a more universal tool than a standard screwdriver. For me personally, it is convenient in operation. But if you do not have a drill-spray, you can do with an ordinary screwdriver on batteries. But in cold weather the battery is discharged, so it is more advisable to work with a network tool.

Battery drills are used to twist and twist screws, bolts, screws and screws. With their help, a tree is drilled, panels made of drywall and plastic, and also not very thick metal. There are three speeds in the design of many drums. In the first, this tool is used as a screwdriver with a large torque, on the third. As a drill. He has a wide area of ​​use.

Popular questions

Which screwdriver to choose, 14 or 18 volts?The battery voltage can indirectly indicate the power of the screwdriver, although there are low.Voltage batteries with high power, and not too powerful high.Voltage models. So take into account that more voltage means greater weight and greater price, but not always. Greater power. In general, for home use, there is enough tool with a 12-14 volt battery, 18-this is already quite a lot.

Gaikovert or screwdriver, what to choose?It all depends on what tasks are facing you. Gaikovyrt is a special case of a scoresman, a specialized device designed to work with nuts and bolts. He usually does not have a cam cartridge and speed switch, but there is a clear.Sided mount for nozzles for bolts and nuts and a tangential strike mode. The screwdrivers can be very different, but often it is much more universal devices: with a clamping cam cartridge, several speeds of operation, sometimes with the functions of a drill or a perforator.

Screwdriver 18 volts what to choose?

The greater the voltage and capacity of the battery, the greater its weight and size The difference in size between eighteen-Bosch with 4 Ah, 8 Ah and Bosch batteries and 12 Ach. There are other nuances that should be taken into account when choosing screwdriver. For example, engine design is of great importance.

For household screwdrivers enough Power 500 W (for network) and 9-14 V (for battery). Professional models for long and intensive work require Power not lower than 550 and up to 800 watts (network), and battery. From 18 V and above.

Additional elements

As necessary, the performance of various works using a screw.Vert at a distance from a house or an office with the introduction of bit, end keys and other tools are most ideal take with you plastic case. If the work is scheduled for evening or at night, in the case, together with a screwdriver, you can put drills, tap, hammer, roulette, marker, also a battery lighting device, flashlight, soap, personal hygiene products, ammonia, a tourniquet, a waterproof and another.

If the work will be carried out within a few days in order in field criteria without returning to the base. Complete with the lantern you need to take charged spare batteries.

Each master can just make a holster for a screwdriver of plastic packaging for antifreeze or car oil. To do this, the canister must be cut off the bottom with a jigsaw or a tin knife. The canister with a screw vert is fixed on the belt using a plastic clamp.

If a Squad It is necessary to use as a drill for drilling a huge number of holes in metal, brick, concrete for a short period of time. It is most perfect to use drill with hexagonal (hexagonal tail). This shape of the tail correctly distributes effort along the cutting edges of the drill, significantly accelerates and simplifies the work.

See a few more devices. A set of heads for screwing self.Tapping screws of various sizes, also bolts and nuts allows you not to carry massive and fairly languid sets of end and university keys, screwdrivers and drills. In fact, all the tools necessary for work, including Squad, placed in a successful plastic case of small dimensions.

A special carriage is included with certain models, which, after fixing with bolts on the desktop and installing a circular saw in the cartridge, is kneading the end key, turns the screwdriver into a circular saw-the workplace of a parqueter or a red carrier-reducer.

After installing the knife shaft on the axis of the screwdriver with it, you can also strict boards, cycle the floor and process the edges of the laminate. A huge advantage of using such a device in preparing a parquet for varnishing or to laying a laminate is the ability to serve the tool specifically to the place of work.

Features of choice

When choosing power, it is worth taking into account not only what power of the screwdriver is indicated in the information from the manufacturer. Due to too much performance, the device can tighten the screws too strongly, pressing their hat to the surface. As a result, the appearance of the coating spoils, and the fasteners, if necessary, is almost impossible to unscrew.

When choosing which voltage is better for a screwdriver, it should be borne in mind that the voltage is the main parameter of the device. So, for example, the power of the Makita DDF343SHA screwdriver engine is 700 watts, at a voltage of 14.4V and a battery capacity of 1300 mAh and a rotating moment 36 nm. While the other Hammer ACD182 model has a weaker engine (22 nm) and not such a capacious battery (1200 mAh). And it seems that this device is about 40% weaker. However, due to the voltage of 18 in Hammer, he is able to tighten more fasteners without recharging, even yielding to the competitor in the capacity of the battery.

Understand why a less productive at first glance the screwdriver is inferior to a more powerful one, you can, having made a small calculation:

In the process of choosing a screwdriver, it is advisable to take into account the presence of a spare battery in the kit for it. Some models have even 2 additional batteries. On the one hand, such a set will cost more (especially since the cost of the battery is up to 80% of the equipment price), but it will be much more convenient to work with it. At the same time, an additional battery does not need an additional battery. The time performed with its help rarely exceeds 1-2 hours. Whereas in the process of constant use of a screwdriver (for example, for repair work or furniture assembly), the second battery allows you not to interrupt the work longer than a few minutes. The discharged battery is placed on charging, and the spare is installed in the device.

In the absence of the need for long work, which may need a screwdriver, buying a model with additional batteries is not recommended not only because of its increased cost. Just the operational period of such a battery is short, and after a couple of years, the user will have to buy a new part, without spenting even half of the resource of the old.

Screwdriver how to choose? Power, voltage and torque

One of the widespread tools among masters is a screwdriver. In popularity, it is, perhaps, immediately behind the drill, although it includes some of its functions. The main purpose of this tool is to entrust the screws, or rather, to screw screws.

Let’s look at the basic requirements that you need to consider when choosing a screwdriver. They are divided into two main types, and these are network, operating from the household network 220 volts, and battery, operating respectively from the battery. Since network are not widely common, we will not specifically consider them, but only say that many choice parameters automatically become relevant for network screwdrivers.

How much volt should be a screwdriver?The voltage of the screwdriver battery directly affects its power. From the course of school physics, we know that the power is equal to the voltage of the current force. From this it follows that the higher the operating voltage of the battery, the higher the power of the device. From the screwdrivers presented on the market, batteries of batteries of 6, 12, 18, 24 and 36 volts are common. This voltage is always indicated by the manufacturer on the label of the product.

How much watts should be a screwdriver?This question was partially covered in the previous paragraph. But it is worth summing up, the more powerful the screwdriver is, the more comfortable it is to work with it. It should be borne in mind that the power of the device must correspond to the battery. The power of the battery should be designed for energy consumption by a motor, which is built into a screwdriver. With incorrect ratios, you can get a quick battery discharge. It should also be noted that the more powerful the device is and the power of power is more powerful, the higher the weight-gamyard characteristics of the tool. Well, as a result. A higher price of a screwdriver. If we consider the power of the battery, then most likely it is more correct to say not power, but the battery capacity. It is measured in an ampere of watches and is designated as ah.

Screwdriver with which battery to choose?Three types of non-served batteries are common in household appliances and tools: nickel-cadmium (Ni-CD), nickel-metall-hydride (NI-MH) and lithium-ion (Li-Ion). The first and latter have a huge flaw. Memory. Over time, these types of batteries begin to charge and not be discharged completely. This leads to the loss of the power of the element, but simply to say, to the loss of our precious ampere hours. In addition, the average number of the charger is 1000 cycles. With intensive use of the tool, batteries will quickly fail. There are various ways of resuscitation of such containers, but this is quite problematic, and they are not fully restored and not for a long time. Lithium batteries are deprived of the effect of memory, but they poorly tolerate extreme temperatures. But such batteries are more durable and much easier than their counterparts. Reliance for owning a lithium-ion battery will be a higher cost of a screwdriver.

What should be the moment in the screwdriver?An explanation is necessary here. This refers to the moment of tightening the screwdriver, or rather to say the torque. For motorists, the expression “torque” is probably familiar. In order not to load you with definitions, I simply say. The moment of tightening is the maximum constant load on the screwdriver, in which the device can continue to screw at constant speed. The higher the torque, the more long and thick screws you can “drive” into the walls and other obstacles. The moment is measured in Newtonians per meter and briefly designated as Nm. It is advisable not to buy screwdrivers with a moment below 10-12 nm.

Screwdriver with what speed of rotation to choose?Here you must determine for yourself. If you want to use the device only to spin screws, then this is one thing, and if there is a desire or need to post something inadvertently, then this device should have completely different characteristics. Speaking of characteristics, we will keep in mind the speed of rotation of the rotor. For standard screwdrivers, it is about 750 revolutions per minute. There are also two.Speed models that may be more expensive, but here you already get two speed ranges. For example 750 and 1200 revolutions. Is the second speed for a screwdriver important so important? It’s hard to say, because the work in both cases will be completed. With small volumes of wrapping screws, you will not feel this at all, but the screwdriver in the role of the drill already completely eared on the horizon. But here again, the speed of a full.Functional drill is an average of 2400 revolutions per minute. If your screwdriver is capable of this, then buzz. The opposite situation is when they want to get a screwdriver from a drill. This will not be quite equivalent to exchange, since the drill does not have a freeze. Friction is a device that is tuned in the operation with a certain value of the moment. If you tighten small screws, then the moment of operation set less. Otherwise, at a large moment, the screwdriver drove the self.Tapping screw so deeply that this can cause the marriage of the wall, boards and other details into which this screw was screwed up. The default drill has no friction.

Is it worth taking a screwdriver with a perforator function?The punch is a drill function and it serves to drill stubborn surfaces such as concrete, brick, etc.P. If you want your screwdriver to work for a good drill, then feel free to purchase a model with such a “bell.”. Otherwise, this is an excessive function and you should not overpay for it. Be sure to read the article Why is concrete not drilled? Burn and break down.

Shurovyrt, whose to choose?The more accurately posed question sounds like a screwdriver which manufacturer to choose. In this situation, the choice depends on you. We discussed all these factors of choice. You have to proceed from the parameters of convenience, price and personal sympathy. We will not list well.Known brands and tell you about their advantages and disadvantages. You work with the tool. Look. Is it convenient to lie in the hand, whether it will be difficult when performing long.Term work, etc.P. We are sure you will get what you need!

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Types of batteries, their features

As in all power tools, in screwdrivers, the battery is the weakest part. They can be the following types:

NICD batteries were developed back in the middle of the last century, but they are found to date to date due to two main advantages. Firstly, they have a large possible amount of charging cycles (up to 1000), which allows them to operate for 20 years, and secondly, this is the ability to withstand large temperature changes without deterioration of their technical characteristics.

The disadvantages that limit their use on a wider scale include:

• Relatively large sizes and mass;
• Loss of capacity due to incomplete discharge, t.E. Requires complete discharge of the battery to the next charge;
• Requires special disposal as a product containing environmentally harmful substance.

NIMH batteries began to be produced since the 70s of the last century, as a modification of nickel-cadmium batteries, and in comparison with them they have become much easier, environmentally friendly, as well as less critical to the requirement of the use of batteries until a complete category. However, frequent recharges also adversely affect their capacitance. Unfortunately, all these achievements occurred by reducing the service life and the inability to use batteries at negative temperatures.

Li-Ion batteries began to be produced on a massive scale by Sony since the 90s of the last century and gained widespread due to small weight, large capacity and uncritical to the requirements for recharging the battery until complete category. These advantages of LI-Ion batteries are very in handy for the requirements of the developers of professional autonomous power tools, including screwdrivers, which are used by masters continuously throughout the work shift.

The main parameters of the battery and the tool itself

The main of the parameters that characterize the work of the screwdriver is the voltage of the battery, on which, in turn, the power of the electric motor and torque depends. For household models, the difference between screwdrivers in voltage is small. On average, it is in the range of 10.8–14.4 V. Productive options designed for constant use can be equipped with 24–36 volts batteries.

The voltage of the screwdriver battery and the type of battery. Answer what the difference is, you can, knowing what metals were used for its manufacture. For nickel-cadmium batteries, large in size with a similar capacity, the value of the indicator is a multiple of 1.2 V (it is the voltage of one element that is composed of a battery block), for lithium-ion-3.6 V of lithium-ion.

Among other, no less important characteristics can be noted:

• The power of the screwdriver, according to which it is also possible to determine the speed of twisting of screws and self.Tapping screws. To carry out repairs on their own, there are enough models with a capacity of 500-700 watts. Professional repairman will need more powerful equipment-800–850 W;
• The number of revolutions of the rotating part of the device per unit time. According to this parameter, it is determined whether the screwdriver can fulfill the task set before it. For example, to tighten the desired type of fastener. So, for the bolt, self.Tapping screw and screws, 500 rpm will be enough, for drilling it will be needed already 1,200 rpm;
• Twisting the moment, the value of which may be one of the main answers to the question of what the voltage of the screwdriver battery affects. By this characteristic, you can determine both the diameter and the length of the twisted screw or self.Tapping screw. For large fasteners, as well as for drilling deep and wide holes, and for solid materials, a serious value of the rotating moment is also required. The maximum value of the indicator is 10-60 nm.

There are two types of torque of screwdrivers. Starting (larger in size and required to launch the device to work) and constant, that is, a worker. The value of the parameter in modern equipment models can be adjusted. Find out how many modes can be selected from a particular device, you can find out in the documentation available on it. Over, in tools with a pulsed mode of operation (turning on the rotating part with jerks) the capabilities of screwing more. Allowing to periodically increase the torque, they can screw a larger screw.

In addition to the voltage of the screwdriver and its power, the battery capacity should also be evaluated. The characteristic is measured in ampere hours or milliampere hours. The larger the indicator, the longer the screwdriver can work out without recharging.

The average battery capacity of the household model is 1300 mAh, which is enough for 2-3 hours. Professional equipment requires more work time. And the master who uses the screwdriver throughout the working day, it is worth purchasing a model from batteries of 1.5–2.0 Ah.

The most powerful battery screwdrivers

Wireless screwdriver rating with better power.

WHILE DA-24L-2K

Domestic instrument for its price. In 2019, in the top of domestic construction instruments. Convenient, light, Good centering of the cartridge. Can act as a small boat. The restriction on the effort works, the concrete drill. Fast.Packed cartridge, dot lighting lamp, button button lock, case.

BORT BAB-24UX2LI-FDK Li-Ion 2.0 A 24 in x2 bag

Homework screwdriver. Powerful, compact, two batteries. Pleasant design and ergonomicity, charges quickly, reverse. To increase the service life, the engine brake is provided. Blocking button on, adjustment of the speed of rotation, Impulse charger, a bag.

Resanta Da-24-2LK

Multifunctional The tool drills any material, there is a replaced battery. High.Quality assembly, high torque. Metal gearbox, ventilation and engine brake, impact function. The battery protection system from overloads, spindle blocking. Suitable for drilling holes in ice as an ice discovery, fishing. Two batteries, charger, set of bit, case.

Sturm! CD3224L

Time.Tested screwdriver. For home repair it is better to take this model. Large power supply, Meaning cartridge, charging enough for 40 hours of work. Two batteries, pulsed charger, suspension mount. Carabiner, set bit, case.

WHICH DA-24L-2K/B

Functional tool, powerful, Convenient and reliable. When used does not heat up, there is no vibration. Used for different types of materials. Brighting option, motor cooling system. Removable battery, pulsed charger.