Type
— Bush cutter. In this case, classic hedge trimmers are devices that are equipped only with bush attachments (see "Attachments") and do not have long rods like those used in pole saws (see below). In full accordance with the name, they are designed to work with shrubs — both individual plants and hedges. They are available in various power and power options.
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For bushes/grass. This type includes compact battery-powered devices that have relatively low power and are not designed for difficult working conditions. Usually they are able to work with two types of nozzles — for bushes and for grass (see below) — however, not all models are regularly equipped with both nozzles. Anyway, tools of this type are intended more for decorative processing of vegetation than for serious garden work; this is due to both low power and limited battery life (for more details on both points, see below).
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Altitude cutter. As the name implies, this type of machine is designed to work at high heights from the ground, for example, to trim the branches of fruit trees. Their main distinguishing feature is their long length, which is usually ensured by the presence of a characteristic rod in the design. Thanks to this, you can easily reach most branches, even on a fairly tall tree (or to the edge of a tall hedge), without once again resorting to ladders or other similar devices. Most often, pole saws are equipped wit
...h saw blades (see "Nozzles"), however, there are options with nozzles for bushes.Attachments
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For bushes. Nozzle designed for cutting branches of small thickness, characteristic of most shrubs. The general principle of operation of such a device is similar to clippers: there are two sets of teeth located close to each other, one of them is stationary, and the second moves back and forth at high speed during operation. As a result, each pair of movable and fixed teeth works in the manner of scissors, cutting leaves and branches that have fallen under the blades. The nozzle itself looks like a web stretched forward, on both sides of which the teeth are located; this allows you to move it in any direction during operation — to the right or left, depending on the situation. It should be noted that bush nozzles are able to cope with branches up to 2-3 cm (depending on engine power), but they are still not designed for use as full-fledged saws.
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For grass. Attachments for cutting grass and leaves. Like bush (see above), two rows of teeth are used; and in general, a brush cutter with such a nozzle looks like an enlarged clipper, only not for hair, but for grass. At the same time, it is worth noting that it is not able to replace a full-fledged lawn mower: the cutting width most often does not exceed 20 cm, and the devices themselves are usually small battery models (see "Power") and are not structurally designed to work with large areas. Their main purpose is the decorative processing of small flo
...wer beds, as well as edges that a conventional lawn mower cannot reach.
— Saw blade. Such nozzles are very similar to the working element of a chain saw: an elongated rounded base (tyre), along the edge of which cutting teeth move during operation. They are designed to cut thick branches that ordinary bush attachments (see above) cannot handle, and are used primarily in pole cutters (see "Type").Battery voltage
Operating voltage of the battery in a battery-powered hedge trimmer (see above). This parameter is usually selected by the manufacturer according to the characteristics of the engine: the greater the power, the greater, the battery voltage is likely to be. In fact, voltage data may be needed only if the battery fails and it will be necessary to replace it with an equivalent one. In addition, there are formulas that allow you to roughly estimate the battery life depending on the battery voltage, its capacity and the power of the tool; they can be found in special sources.
Capacity
The capacity
of the battery that comes standard with the battery-powered hedge trimmer (see above). Expressed in amp-hours, one ampere-hour means that the battery is capable of delivering 1 amp for 1 hour.
Last but not least, the battery life of the tool depends on the capacity of the battery. However, it is impossible to directly evaluate the battery life of a brush cutter by this parameter: the fact is that it depends on a number of other factors, ranging from engine power and battery operating voltage to the degree of complexity of work and contamination of the nozzle. Therefore, it makes sense to compare different models with each other in terms of battery capacity only if they do not have significant differences in other characteristics. But at the same time,
brush cutters with a capacious battery a priori allow the device to work more.
