Comparison GARDENA AccuCut Li 9851-20 vs Black&Decker GSL700

— 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.

— 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).

— 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.

- For bushes. An attachment designed for cutting thin branches, typical of most shrubs. The general principle of operation of such a device is similar to hair 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 like scissors, cutting leaves and branches that fall under the blades. The nozzle itself looks like a blade stretched forward, with teeth on both sides of it; this allows you to move it in any direction during work - to the right or left, depending on the situation. It is worth noting that bush attachments are capable of coping with branches up to 2-3 cm (depending on engine power), however, they are still not designed for use as full-fledged saw.

- For grass. Attachments designed for cutting grass and leaves. Like bush ones (see above), they use two rows of teeth; and in general, a hedge trimmer with such an attachment is similar to an enlarged clipper, only not for hair, but for grass. It is worth noting that it is not capable of replacing a full-fledged lawn mower: the cutting width most often does not exceed 20 cm, and the devices themselves are usually small battery-powered models (see “Power”) and are not designed to work with large areas. Their main purpose is the decorative treatment of small flower beds, as well as edges...that a regular lawn mower cannot reach.

— Saw blade. Such attachments are very similar to the working element of a chain saw: an elongated rounded base (bar), along the edge of which cutting teeth move during operation. They are designed for cutting thick branches that conventional bush attachments cannot handle (see above), and are used primarily in pole pruners (see “Type”).

The length of the bar usually refers to the total length of the brush attachment or saw blade (see Attachments) supplied with the hedge trimmer. The longer the tire, the longer the cut that the tool can make at a time. In general, it is believed that a short length is typical for entry-level tools, while professional ones are equipped with larger attachments. However, here you need to take into account that the choice depends not only on the scale, but also on the specifics of the intended work: long attachments are less maneuverable and less suitable for topiary trimming of bushes. In addition, the cost of a brush cutter also largely depends on this parameter.

The distance between the individual teeth of the shrub attachment (see "Tips") supplied with the tool. The larger the pitch of the teeth, the easier the tool will cope with thick branches, however, the quality of the work will be quite rough. Conversely, more densely spaced teeth work "cleaner" but are less suited to tough conditions and large branches.

The frequency of movement of the teeth in bush or grass attachments (see "Tips"). The design of most of these tools is such that for one revolution of the engine, the teeth make one complete cycle of movement back and forth; therefore, the stroke rate is usually determined by the speed of rotation of the engine and is indicated in revolutions per minute.

It is believed that the quality of the tool’s work largely depends on this parameter: the more often the stroke, the cleaner the cut will be. Ratings up to 2200 rpm are usually typical for entry-level devices, up to 2800 rpm are average, and advanced models can have speeds of 3400 rpm and even higher.

Features of the battery-powered hedge trimmer. Most devices out of the box have one battery. But there are models that are equipped with a replaceable battery ( 2 batteries included). This solution allows you to extend the operating time of the device by replacing a discharged battery with a charged one. And the absence of a battery in the kit will be appropriate if you buy a hedge trimmer, which is suitable for a universal battery from other devices of the brand. Or you yourself want to choose a model with the required capacity. And for low-power devices there is a built-in battery.

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.

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.

The time it takes to charge the brush cutter battery from 0 to 100%.