How To Choose A Cordless Screwdriver For Work
BOSCH GSR 120-Li
Main characteristics:
- Chuck type. Keyless;
- Maximum torque, (Nm). thirty;
- Battery capacity, (Ah). 2;
- Battery type. Li-Ion;
- The number of batteries included. 2.
Body and ergonomics. The drill-driver of this brand, due to its small dimensions and the use of structural plastic, weighs only 950 g. It has a comfortable handle with a raised surface for better contact. The battery inserted into the handle does NOT interfere with work in confined spaces. The LED light illuminates the drilling area well even at night. There is a slot for attaching a strap, which makes it easy to move with the tool at height.
Engine, gearbox, battery. The power of the brushed motor is sufficient for driving in screws with a diameter of 7 mm. The keyless chuck is suitable for bits with a thickness of 1 to 10 mm. The gearbox operates in two modes with a maximum speed of 380 and 1300 rpm. A pair of compact 1.5 Ah lithium-ion batteries when used alternately to minimize downtime.
Functional. The model is designed for drilling holes and working with fasteners. The torque reaches 30 Nm and is infinitely variable by means of a rotary drum. The direction of rotation can be changed by simply moving the corresponding switch. The tool is sold with a plastic case, charger and two batteries.
BOSCH GSR 120-Li complete set.
Pros of BOSCH GSR 120-Li
- Compact size and light weight.
- Good ergonomics.
- Rapid tool change.
- Illumination of the working area.
- Adequate price.
Cons BOSCH GSR 120-Li
- Cannot be placed vertically on the base of the handle.
- The cartridge loses its grip reliability over time.
The best screwdrivers with a 10.8V battery
Screwdrivers with a 10.8 V battery allow the assembly of furniture and plasterboard structures and are intended for use at home.
BOSCH GSR 12V-15 FC
Main characteristics:
- Chuck type. Under the bits;
- Maximum torque, (Nm). thirty;
- Battery capacity, (Ah). 2;
- Battery type. Li-Ion;
- The number of batteries included. 2.
Body and ergonomics. A universal tool for working with drills and bits for various purposes. It has a modular design, consisting of a body with a handle weighing 0.6 kg and a set of attachments. All elements are covered with embossed plastic and rubber on the outside, which improves the grip, excluding slipping. In case of poor lighting, there is LED backlight.
BOSCH GSR 12V-15 FC complete set.
Engine, gearbox, battery. The power of the brush motor is enough for drilling holes up to 30 mm in wood and screwing self-tapping screws with a diameter of up to 7 mm into it. He has two speed modes at 400 and 1300 rpm. Maximum torque 30 Nm. During operation, you can alternately use two batteries with a capacity of 2 Ah.
Functional. Depending on the working conditions, you can use the keyless chuck, slot for standard bits, angle and eccentric attachments. The battery level is monitored by the indicator on the handle.
An example of BOSCH GSR 12V-15 FC operation with a corner attachment.
Pros of BOSCH GSR 12V-15 FC
- Excellent equipment for professional work.
- Lightweight case made of durable plastic with individual compartment for accessories.
- Comfortable grip.
- Large torque.
- Good build.
- Backlight.
Cons BOSCH GSR 12V-15 FC
- High price.
- You cannot manually turn off the backlight.
Metabo BS 14.4
Main characteristics:
- Chuck type. Keyless;
- Maximum torque, (Nm). 40,
- Battery capacity, (Ah). 2;
- Battery type. Li-Ion;
- The number of batteries included. 2.
Body and ergonomics. The plastic surfaces of the side parts of the body and the handle of this model are rubberized, which not only contributes to a comfortable grip, but also prevents the tool from slipping off inclined surfaces. Also included is a metal clip used when wearing a screwdriver on a hip belt, and a pair of slots for storing spare bits or drills.
Ergonomic shape with a weight of 1.2 kg, does not cause fatigue for the master during the whole working day. LED flashlight removes all the problems associated with low light.
Engine, gearbox, battery. A reliable brush motor is combined with a two-speed gearbox, allowing you to smoothly gain spindle speed up to 400 or 1500 cycles per minute. It uses a traditional hand-tightened chuck to speed up tool changes. It accepts cylindrical or hex shanks up to 10 mm in diameter.
By turning the ratchet, the drilling mode is selected or any of 20 options for the magnitude of the torque, which in the extreme position reaches 40 Nm. Two 2Ah lithium-ion slide-type batteries charge in just 1 hour each. The state of charge can be controlled by the indicator.
Metabo BS 14.4 complete set.
Functional. Reverse option allows you to unscrew fasteners. The spindle lock facilitates easy bit changing. The special technology of the charger prevents the battery from getting too hot during charging, which increases the battery life.
Pros of Metabo BS 14.4
- Wide speed capabilities.
- High torque.
- Universal batteries for most Metabo tools.
- Gentle battery charging.
- Convenient backlight.
Cons of Metabo BS 14.4
- Relatively high cost.
- Perceptible noise.
Varieties of batteries
Nickel cadmium (NiCd). The largest dimensions, which is not always convenient for reasons of compactness, have accumulators called nickel-cadmium and designated “NiCd”. They are quite cheap and work like a clock. without failures, both at high temperatures and at sub-zero temperatures. You can charge them an impressive number of times. Here are just those present here, the memory effect can serve as a bad service, in order to avoid which such a battery is sent for storage completely discharged, to zero. Charging is also carried out only when the battery is completely drained.
Memory effect. This is a loss of capacity of the battery and, as a consequence, its shorter use between recharges. If you do not wait until this battery is completely discharged, it will be recharged again, it “remembers”, that it was not used up completely and in the future will not give all the energy, but only the amount that reaches this limit. You have to constantly Monitor the battery charge level. Owners of the tool with such batteries often ignore this moment, in total, part of the capacity is gradually lost.
Nickel metal hydride (NiMH). Nickel metal hydride batteries are labeled with the letters “NiMH”. They are 100 percent environmentally friendly and weigh very little. Another significant plus is their ability to work long enough, and not requiring recharging. The memory effect in these batteries is present, but not as pronounced as in the previous type.
Alas. there is a significant disadvantage in them. This is the inability to withstand frost. Even when it’s only minus two degrees outside, such a battery starts to discharge on its own. Do not store the screwdriver in a garage without heating or in a car trunk. For storage, this type of battery also needs to be charged.
Lithium-ion (Li-Ion). The third type of battery is lithium-ion. Labeled “Li-Ion”. They appeared later than everyone else. in 1991, in mass production they became the brainchild of the Japanese corporation Sony. They are distinguished by the absolute absence of memory effect, high capacity and long-term retention of the charge. They weigh forty percent less than the analogs described above. They can be charged in any state. at any charge level. Such batteries are often put on professional models, especially on screwdrivers, combined with a drill.
Metabo PowerMaxx BS 12
Main characteristics:
- Chuck type. Keyless;
- Maximum torque, (Nm). 40,
- Battery capacity, (Ah). 2;
- Battery type. Li-Ion;
- The number of batteries included. 2.
Body and ergonomics. This compact model is shortened in length and weighs only 1 kg. It has a raised handle, good balancing and a wide launch key. It can be placed vertically without fear of dust entering the interior. A well-positioned light bulb at the base of the handle provides good illumination of the work area Provided with a metal hook for carrying on a belt.
Engine, gearbox, battery. The robust brush motor does NOT overheat even when drilling holes in metal up to 10 mm in diameter. The two-speed gearbox provides a spindle speed of up to 360 or 1400 rpm. Keyless chuck is designed for tooling sizes 1-10 mm.
The torque is adjustable and reaches a maximum of 40 Nm. Two 2Ah lithium-ion batteries have no memory effect and are NOT self-discharging.
Metabo PowerMaxx BS 12 complete set.
Functional. The model is equipped with a reverse, dynamic brake, spindle lock.
Pros of Metabo PowerMaxx BS 12
- Compact dimensions.
- Convenient design.
- Large torque.
- Reliable materials.
- Two powerful batteries with charge level indication.
- Case and charging station included.
Cons of Metabo PowerMaxx BS 12
- The manufacturer saved on the quality of the plastic for the suitcase.
12 best cordless screwdrivers and tips for choosing. The best screwdrivers with a 12V battery
Such devices are most popular among home craftsmen. They are NOT too expensive, but quite productive and work for a long time autonomously. When deciding which cordless screwdriver is best for the home, many stop at similar models. They will come in handy for a small summer cottage or home repair, they will help to drill metal and wood.
Best 18V screwdrivers
Real professional models that are suitable for any construction, repair and installation work. They can be used in batch production conditions when it is required to regularly work with a large amount of fasteners. Looking further at the description of three popular models, you can try to determine for yourself which professional cordless screwdriver is better.
Choosing a screwdriver
In this article, we would like to touch on the topic of choosing a screwdriver, take a closer look at their types and, of course, technical characteristics that you should pay attention to when buying this type of tool in order to expand to answer a question that has recently arisen more and more, namely. How to choose a screwdriver for home, cottage or work.
Applications of the screwdriver
- Tightening / unscrewing screws, screws, bolts and other fasteners;
- Drilling holes in wood, metal and brick.
- Stirring building mixtures and paints;
- Drilling holes for winter ice fishing.
There are a huge number of screwdrivers on the market, different in parameters and manufacturers. They are subdivided into professional and household, depending on the nutrient, cartridge size, power, a number of additional functions, delivery set and price. This division, however, is inherent in almost any instrument.
To begin with, let’s analyze the division according to the nutrient. Two types can be distinguished: rechargeable (Li-Ion, Ni-Cd, Ni-Mh) and electric, in each of them we will talk in more detail below.
The most modern and most common type of rechargeable batteries today, not only in screwdrivers, but also in many other tools (as well as in portable devices, which we all use). Modern Li-Ion batteries are designed for three thousand charge-discharge cycles. The rechargeable battery is lightweight and fast enough to charge; moreover, it has no memory to charge.
The main disadvantages are: battery shelf life, which is three years, the need for constant use to get the most out of it and significant cost.
They appeared on the market for a long time, they are used in many tools, and not only in screwdrivers. Designed for one and a half thousand charge-discharge cycles. The shelf life of such batteries is five years, there is also the possibility of working in the cold, at temperatures up to 15 degrees and it is very important for the ordinary buyer, the lowest price of all types of batteries.
The negative aspects of this type of battery are a rather long, in time, charging process (at best, it is time), the presence of memory for a charge and a significant weight of the battery.
At its core, it is a cross between Li-Ion and Ni-Cd batteries. Found in screwdrivers much less frequently than the types of batteries described above. The number of charge-discharge cycles varies about a thousand. It has practically no memory to charge, and has the lowest self-discharge among all types of batteries. Of the minuses It is impossible not to note the weight.
All batteries differ in capacity and battery voltage.
Capacity is measured in amperes times time (Ah). The higher this indicator, the more the battery is capable of carrying a charge, respectively, more work will be done on a fully charged battery.
The battery voltage is measured in V (Volts). The power that can be obtained from a screwdriver operating on THESE batteries depends on this indicator. Simply put, battery voltage directly affects the maximum possible performance of soft and hard torque, which we will discuss below.
Very similar to drills (don’t miss also the article “How to choose a drill “). The main difference is the torque control. Models of this type of screwdriver are represented by only a few manufacturers of household tools. Renowned manufacturers focus on professional drywall screwdrivers, the cartridge of which begins to rotate the bit only after “drowning” it into the material.
Corded screwdrivers are suitable for one-time work around the house or for professional use in repair and construction. Based on the situation, the absence of the need for charging can be considered a plus. Constraints created by the need for an electrical network, low mobility and tangled wires are definitely the main disadvantages of this tool.
Chucks and reducers
Screwdrivers are available with either a quick-release three-jaw chuck (clamping range of the tooling from 0.5 to 13 mm), and with a hexagonal tool seat with a 1/4 inch shank. The keyless chuck is more practical and allows you to use any tool of a suitable diameter. Of course, the larger the chuck diameter, the more versatile the screwdriver is.
The hexagonal chuck is convenient for frequent tool changes and when working in hard-to-reach places. For drilling with such a screwdriver, you must use drills with a hex shank. Can be fitted with a conventional chuck with a hex shank.
Rotation from the engine to the chuck is transmitted through a gearbox. The gears inside the gearbox can be made of metal or plastic. Metal gears Most typical for powerful professional screwdrivers.
They reflect two parameters, measured in Nm (Newtonometers), these are soft and hard torques:
- Soft torque is an indicator of the maximum force of a screwdriver in terms of twisting / unscrewing, the rotational speed in this mode for most screwdrivers varies from 0 to 350 rpm.
- Hard torque, in turn, reflects the maximum force in the drilling mode, in this case, the rotational speed is usually calculated from 0 to 1000 or more rpm.
The more these parameters are, the more powerful, productive and practical the screwdriver is. For example, a screwdriver with a torque of 25 to 30 Nm can easily screw a self-tapping screw up to 70 mm long into a tree. To tighten self-tapping screws from 70 to 100 mm, a torque of 40 Nm is required. Longer self-tapping screws require pre-drilling the hole.
Additional features of some screwdrivers:
- The presence of the hammer mechanism is undoubtedly quite a useful function, especially when working with socket heads or when drilling holes in brick and stone.
- The presence of an impulse, periodically increased torque, is useful for easier drowning of fasteners into the material, when unscrewing a stuck self-tapping screw, or even brown, if the hammer drill does not cope. Especially useful when there is no way to rest against to firmly press the screwdriver.
- The presence of 3 speeds will allow you to fully replace the power drill at home, since the rotation speed of the chuck in this mode can be more than 3000 rpm, and the first speed will give out a decent torque.
- The presence of backlighting is very important when working in hard-to-reach places or with poor, or even completely absent lighting. The most successful version of the location of the backlight above the battery pack, there are models with a backlight located above the start button, which is less effective in most cases.
Summarizing all of the above, I would like to note that it is impossible to advise a universal screwdriver for everyone, because many components of the choice depend on your goals and objectives, which you are going to implement with this tool, but in the end, I will still share my opinion on the choice, on some examples.
Home / cottage screwdriver
For the most part, the network version will be enough, due to the availability, light weight and lack of the need for special mobility. If we consider rechargeable versions, then it’s worth Pay attention to Ni-Cd and Ni-Mh, if you do not plan to use them often, this will save you money and get a longer battery life.
In cases where frequent use is planned, requiring the continuity of the working process, there is no doubt that the choice of a Li-Ion battery will justify itself 100%. Why don’t I advise taking more modern batteries for rare jobs? Everything is very simple, they are more expensive and are designed for stable use, so do not forget that their shelf life is 2 years less, and then, in this case, there will be much more missed opportunities.
For home needs, the maximum torque of 25-35 Nm will be quite enough, of course you can take a more powerful one, it all depends on your desire and financial capabilities. The capacity of the battery is not important for centuries for periodic use at home, therefore 1.5-2 Ah will be just right.
Professional screwdriver
When working in hard-to-reach places, it will be logical to choose a more compact model. The peculiarities of frequent and long-term continuous use in many cases justifiably lead to the purchase of a Li-Ion screwdriver with a maximum torque of 40 Nm and more, depending on the type of materials with which to work in the future.
Li-Ion batteries, in this case, are relevant due to the continuity of the working process, provided by fast charging of the batteries, and they are simply lighter, which matters for your hand during prolonged use.
The choice of additional features of the screwdriver directly depends on your needs. Try to clearly define for what needs you will use it, decide on a budget. Last but not least, the availability of second tools, like a drill or a hammer drill, with rare use, these moments will allow you to weed out unnecessary functions and highlight the clearly needed ones.
In conclusion, I would like to note that the screwdriver market is full of various variations and choosing exactly what suits you: it will not be difficult. We hope we were able to help you decide on the choice of a screwdriver. We wish you the maximum return from the instrument and more positive emotions.!
How to choose a cordless screwdriver 6 tips and a rating of 5 cool models
A screwdriver is essentially an electrical substitute for a screwdriver. It performs the same functions as the younger “brother”, only makes the process of tightening / unscrewing screws and bolts much faster. Such a tool is especially effective if there are tens, or even hundreds of screws. The device can not only twist the screws. I installed a special drill, with a screwdriver you can make holes in wood, plastic and thin metal. powerful devices even take bricks and concrete. In general, the tool is indispensable in everyday life and in repair.
Additional functionality
In branded models, the manufacturer, in addition to the standard features, also offers the user auxiliary functions. They greatly facilitate the work and can become a point above the “i”, dispelling doubts whether it is worth buying this or that model.
Most often found in tools:
- The charge indicator is a small light that will tell you when you need to put the battery on recharge;
- Reverse move. and unscrew the screw, and the drill can be taken out of the thick board;
- The impact mechanism is irreplaceable if you need to work with a stone surface or brick;
- Workplace lighting. in some screwdrivers it is so powerful that there is no need for extended lighting.
There is also an impulse, various blockers, speed switches, etc. Each additional function is a plus to the price of the device, which means that you need to be 100% sure that you need it in the device.
Tool chucks
Buyers often ask: “How to choose the right screwdriver for home, focusing on the type of chuck?” The answer is to remember the information and learn to distinguish one type of cartridge from the second. There are 3 of them:
- The key. the drill holds in it a device resembling “cams”. the two sides of the chuck are connected with the fastening side to the center and in this way they clamp the tool. The chuck nut is tightened with a special wrench that comes with the kit. It takes some time to change the tooling, but the fixation is strong and reliable, which is ideal for working with hard materials.
- Keyless. one- and two-sleeve. The main difference is that in single-cartridge cartridges the nozzle is changed with one hand. press the cartridge, remove the rig, and put the other. For two-clutch ones, you will have to use both hands, which is already inconvenient.
- Hexagon. A special “socket” for bits, which are necessarily included in the tool kit with such a chuck.
Looking through the range of cordless screwdrivers with different cartridges, it is difficult to answer which one is better. Here, rather, you need to look at the diameter of the hole in the chuck, it depends on it what kind of equipment can be used when working. In household tools, attachments with a thickness of NOT more than 1 cm are used.
Criteria for choosing a cordless screwdriver
To choose a quality screwdriver, pay little attention only to the price, appearance and comfort in the hand. It is necessary to additionally evaluate a lot of characteristics. Those who DO NOT believe the consultants can independently study the technical passport of the device they like. It describes the main parameters and capabilities. What is important when buying a cordless screwdriver and which device is better for the house from inexpensive ones is described in detail in the following sections.
All about battery-powered screwdrivers: pros and cons
The main difference between the cordless screwdriver and the network model is the absence of a cord. Autonomy of work and non-attachment to an outlet are the main advantages of a tool with a battery inside.
The advantages of the device also include:
- Mobility. The tool and the charging battery are located in the same housing, no additional elements are required for operation. It is enough to take the device in hand, and it is already ready to work. Can be moved anywhere.
- Compactness. Typically, household autonomous screwdrivers are small in size. This makes the device especially convenient in hard-to-reach places.
- Versatility. Technique replaces screwdriver and drill.
In practice, a cordless instrument is indispensable in objects without electricity, when it is necessary to frequently move or climb to a height. The device can be operated outdoors or indoors.
The only drawback here is the need to periodically charge the battery. Manufacturers are trying every possible way to solve this problem, for example, by offering 2 batteries with the tool. While one is in the working process, the second restores energy.
Torque
The numbers in the characteristic show with what force the screwdriver twists the self-tapping screw or how much force is required to overcome the drilling load. What is the practical use of knowing the parameter? The diameter and length of the bolt to be screwed in depends on the torque. The higher the indicator, the longer and thicker the screws will be used in work, and not fearing failures or breakdowns. For example, at 40 N / m it will be possible to freely “drive” a self-tapping screw 10 cm long into the tree.
In small household models, the torque is from 10 to 30 N / m, but the indicator can be adjusted by adjusting to the nozzle. For adjustment, a limiter is provided on the screwdriver body. a ring that goes immediately after the chuck. The user can coordinate the effort for a specific screw by scrolling the limiter. Result: as soon as the self-tapping screw is tightened to the desired level, the chuck will stop, although the motor will work at the same time.
Interesting: the stop not only helps to tighten the bolts, preventing excessive “sinking” into the material, but also protects the tool from wear.
Manufacturer focus
A hackneyed truth. a brand beyond competition. Yes, branded tools are more expensive, but they have a quality guarantee and service centers for repairs, and the screwdrivers themselves are made of durable components.
Quite good screwdrivers with a removable battery are also offered by Varo Kreator, Sparky, Dnipro-M and others.
Voltage and other parameters
For an ordinary buyer of a screwdriver, it is enough to know:
- In household appliances, the voltage ranges from 10-14 V;
- For professional, the indicator should be higher. from 18 V. Some instruments boast a level of 36 V.
The next characteristic is power. The parameter informs the user about the speed of the device. It is logical that the higher the power, the faster the screw will be screwed in. But it is not worth overdoing it, for household purposes and do-it-yourself routine repairs, a 500-700 W model is quite enough.
In order not to send the device for charging every half hour of operation, it is worth Paying Close attention to the battery. Modern screwdrivers use:
- Lithium-ion batteries are not subject to self-discharge, the most common. They can be charged up to 3000 times, and at any stage and discharge level.
- Nickel-cadmium. are not afraid of cold, they work efficiently at subzero temperatures. However, there is a small drawback. self-discharge. You need to store such a battery with 0% charge in order to save capacity to the maximum.
- Nickel-metal hybrid. eco-friendly batteries, which are equipped with some tools of European brands. These batteries are compact and lightweight, but are frost-resistant.
Comparing the characteristics of the battery, it is also worth looking at the capacity. The autonomy of the device and the number of possible recharges depend on it. Over time, the capacity decreases, this also needs to be taken into account.
Rotation frequency
To choose the perfect device for specific purposes, you should pay attention to the number of revolutions. In the manufacturer, this parameter is called speed or rotational speed. It is adjusted by pressing the “trigger”. the harder you press, the greater the speed. In addition, the frequency shows whether the tool will be able to screw the screw into a dense material and what is the approximate diameter of the hole if the screwdriver replaces the drill.
If the buyer is sure that the device will be used only for tightening screws and bolts, an indicator of 500 rpm is more than enough. Screwdrivers acting as drills operate at 1200 rpm.
Nuance: there are models with 1, 2 and 3 speeds on the market, where one is for self-tapping screws, the second is for drilling small holes, the third is for working with metal or other durable raw materials.
Choosing a screwdriver: for home and for work
The difference between screwdrivers for home and for work is in power and functionality. Accordingly, their tasks are different.
- With the help of household models, you can change the lock, hang a mirror or assemble furniture. They are designed for tightening bolts, screws and self-tapping screws. Designed for short-term operation.
- Professional screwdrivers, in addition to screwing, are equipped with the function of drilling hard surfaces. They are tough: able to work non-stop for eight hours, five days a week.
Choose screwdrivers for two parameters.
Screwdriver power
The capacity of battery models depends on the operating voltage of the battery. It ranges from 1.2 to 36 V.
- For simple work, 3-6 V (Volts) is enough.
- For screwing into wooden beams, plastic and drywall, optimal 10-15 V.
- For drilling hard materials. 18 V minimum.
The more power, the more functionality in the screwdriver. Powerful models are heavier than their “brothers”.
Tool performance is directly related to the work of torque (force). The more powerful it is, the more tighten the screw or drill the hole deeper.
For homework, screwdrivers of three powers are chosen.
- Stronger: torque 30-40 Nm (Newton meters) and above. Professional models Equipped with torques up to 130 Nm. In addition to twisting Equipped with the function of drilling hard surfaces.
- Normal: with a force up to 20 Nm. It is easy for them to unscrew / tighten bolts and screws on drywall and plastic.
- If only Twisted is a cordless screwdriver. Its torque is about 10 Newton meters. Suitable for working with small fasteners: Repair children’s toys or tighten loosely clamped furniture bolts.
In most screwdrivers, the maximum torque is adjusted using a limiter. a ring with digital divisions located along the chuck. You will be able to set the optimum torque to tighten the screw. The more graduations in the limiter, the more accurately you can meter the torque element.
Sparky BUR2 10.8li-C HD: 20 torque steps drilling
A separate division is provided to determine the drilling coverage. Therefore, the rotation speed in screwdrivers is indicated in two ranges:
- Unscrew the screws on a low one. It ranges from 400 to 800 vol. / Min.
- Drilled on a high. In professional models, the rotation speed reaches 1300 rpm. / Min.
How to choose a screwdriver
Battery type
Here the battery depends on how quickly the tool is discharged. And if the question became an edge: “How to choose a cordless screwdriver?”. it is worth dealing with the types of batteries.
- Li-Ion (lithium-ion). they have the highest power and, in comparison with other batteries, the largest number of charges. up to three thousand times. They are lightweight, charge fast and have no memory effect. To extend the life of the battery, rather than charging / discharging it completely, store it halfway charged. There is only one drawback:
- Works intermittently in the cold.
Cordless screwdrivers
This type of screwdriver has the following advantages:
- Energy autonomy. The cordless screwdriver is NOT tied to a power source, it is located in the tool itself. In the event of a power outage, you can continue working without problems. Pre-charged battery makes it possible to use the tool in places with no electrical source.
- Mobility. In the case of working with a power screwdriver at some distance from the power source, you need to use extension cords, and the battery model allows you to work anywhere, be it a high-rise building or a basement. The screwdriver, which runs on a battery, will be a godsend for domestic use in a house outside the city or an irreplaceable assistant in case of professional use.
- Spare battery. Having made a choice in favor of a rechargeable device, it would be good to purchase a spare battery. As a result, unexpected discharge can be avoided and the above benefits of this instrument can be enjoyed without any sudden trouble.
In addition to technical characteristics, these screwdrivers are distinguished by the type of battery. When choosing this device, you should pay attention to the available type of battery. They are of 3 types: Ni-Cd (nickel-cadmium), Li-Ion (lithium-ion), and Ni-MH (nickel-metal hydride).
The choice of a certain type of battery should be carried out according to the following parameters:
- Number of charges. Nickel-cadmium screwdriver can withstand up to 1000 charges, nickel-metal hydride. up to 500, and lithium-ion has the highest capacity.
- Memory effect. This parameter has an effect on the capacity of the battery if it was NOT fully charged. The lithium-ion battery may not be fully charged and this has no effect on the subsequent volume of the battery, which cannot be said about the other two types of batteries.
- Low temperature resistance. The nickel cadmium battery can be used when working outdoors at low temperatures. This is what differs from the other two types of batteries, because they will not work fully at low temperatures.
- Safety. On all environmental metrics, the benefit will be given to the lithium-ion battery.
Scope of application
Screwdrivers are used for their intended purpose (the process of screwing / unscrewing, drilling holes in concrete, wood, brick, wood, threading) and indirectly (drilling holes in ice, stirring liquid building materials).
Before starting the selection, you need to think about what areas of application will be in the selected tool, how often it will be used. Conditionally, screwdrivers are divided into amateur and professional. Amateur models are intended for domestic use, they do not have high power and high performance.
In an amateur analogue, the torque is 10-15 Nm, while the rotation speed is 400-500 rpm. Choosing such a tool, you need to focus on the soft torque, which is responsible for screwing in / out.
Professional models have a hard torque of 130 Nm, the speed can reach 1200-1300 rpm.
Species comparison
According to the principle of power supply, screwdrivers are divided into three types:
- Networked tools;
- Rechargeable models;
- Combined devices.
Which screwdriver is better?
Combined screwdriver
For those buyers in whom it is not possible to decide which screwdriver to choose, network or battery, combined models have been created. Their direct principle of operation Based on the possibility of operation from both battery and mains. Quality combination screwdrivers are manufactured by Blaucraft.
Network screwdrivers
A screwdriver, which works directly from the network, has a similarity to a drill. It is expressed in a similar form and conducts power through the instrument. The main difference between a drill and a screwdriver is the possible torque adjustment in the latter. This type of tool is mainly geared towards professional use. At the same time, firms involved in the production of screwdrivers produce only a few models for the home.
Firms and manufacturers of screwdrivers on the market Presented in a large number, but you need to pay attention not to the brand, but to the functionality and power of the tool.
The production of screwdrivers, which work from the network, are carried out by Bosch, Makita, Interskol, Fiolent.
Consider the advantages that a cordless screwdriver has:
- Continuous workflow. Due to the fact that power is supplied from the network constantly through the wire, work with the network device remains uninterrupted for exactly as long as necessary.
- Less weight compared to a cordless screwdriver. An important criterion when working with a tool is its weight.
- When buying a power screwdriver, you only need to pay for the technical characteristics of the tool. The screwdriver, which is powered by the mains, also gains in costs because there is no replacement of the battery cell in case of breakdown or wear.
Comparison of firms
Which company is better to choose a screwdriver is a rhetorical question. There is no definite answer, since it depends on many factors. Before you determine which company is the best screwdriver, you need to think about whether you need a household or professional model. Many firms produce household models that are distinguished by high power and long-term operation without recharging.
You should pay more attention when choosing a professional screwdriver, since labor productivity depends on its reliability. It is definitely worth paying attention to the already proven brands, these are Makita and Bosch. Professional models have high power and battery capacity.
So, it is quite difficult to answer the question of which company is the best screwdriver. Paying attention to this or that manufacturer, the main thing is the correct choice of the screwdriver model, since all brands offer a range of models, starting with cheap household ones and ending with expensive professional ones.