How to choose a cordless screwdriver - we consider the basic parameters of the
In popular TV shows, many have seen how the craftsmen with their help famously wrap up the screws and repair the furniture. In a matter of minutes, they do the amount of work that your watch sometimes takes. It is better not to remember quality and spent nerves.
Let's first look at the characteristics and parameters of the screwdrivers that manufacturers offer. We hope that after reading, you will be able to figure out what kind of screwdriver is battery, and how to use it correctly.
Perhaps, we will begin our acquaintance with the screwdriver with its engine. The performance of any electrical tool directly depends on its power, and in the case of stand-alone instruments - and on the capacity of the battery.
Most manufacturers supply their tools with valve-type electric motors that do not have collector brushes. They have quite high performance, do not need maintenance and are almost silent. To make the right choice of cordless screwdriver, pay attention to these features.
The tool can tell a lot about the speed of its working nodes. At once it becomes clear, for what works it is most suitable. A small gear ratio of the gearbox provides a sufficiently high rotational speed of the chuck. But this is exactly what you need to drill holes of small diameter.
There are a lot of two-speed models of screwdrivers on sale now. At one speed, for example, you can screw the screws, and use the other for drilling. In addition, some models are equipped with an electronic speed control system, which is agreeable, very convenient.
Features of a combined tool or how to choose a cordless drill?
If you are interested in how to choose the battery screwdriver , then for most of them the presence of two speeds is a standard option. With a minimum effort, the chuck rotates at the slowest speed, and with a stronger push, the speed increases.
In order not to "collapse the head" screws, the tool is equipped with a clutch of torque adjustment. When the screw is already twisted to the point of failure, it simply begins to slip. This is a fairly handy feature that will help you save more than one drill or replaceable nozzle, even if you have the power of Hercules.
The instrument's passport data always indicate its weight along with the battery. So if you, for example, professionally engaged in installing suspended ceilings, be sure to consider these data. But do not forget that a small and lightweight screwdriver does not have the same power and energy reserve as the heavier models have.
What is the battery for a screwdriver and what are the features of its use?
Because of the significant difference in battery capacities, the question arises as to which batteries is better for a screwdriver. When one talks about the power of such a tool, it means not only the characteristics of its engine, but also the number of batteries in the unit.
Here everything is very simple: the higher the battery capacity, the more powerful the unit. But to compare in this way different models that differ in their size and purpose, it is not worth it, because for a professional tool, for example, there are requirements.
Models of household screwdrivers are equipped with nickel-cadmium batteries. The main drawback of such a power source is its "memory" charge. If in the process of work they are not fully discharged, then with time, unused capacity can be lost. This can be avoided only through intensive use of the instrument.
If you do not know which battery to choose for a screwdriver, consult a specialist for advice. In order to extend the service life, it is recommended to completely empty the battery at least once a month, after which it should be recharged to the required level.