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Comparison Kraissmann 31 AGS-BL 20/2 vs Grand CA-21BL Pro

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Kraissmann 31 AGS-BL 20/2
Grand CA-21BL Pro
Kraissmann 31 AGS-BL 20/2Grand CA-21BL Pro
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Main
Supplied in a plastic case with two batteries, charger and replacement blades. Battery capacity 3 Ah, 21 V
Typecordless prunercordless pruner
Designone-handedone-handed
Specs
Max. cutting diameter30 mm30 mm
Detachable blade
Finger loop
General
Battery in set22
Battery voltage20 V21 V
Battery capacity2 Ah3 Ah
Handle materialplastic
Handle materialrubberrubber
Storage case
Weight900 g920 g
Added to E-Catalogseptember 2023january 2022

Battery voltage

The operating voltage of the battery installed in the tool of the corresponding type (see above).

The higher the power, the higher the voltage may be required (but not necessarily required) to power it efficiently. In other words, a high battery voltage is usually indicative of advanced performance, while a low battery voltage is not always a sign of an entry-level tool. On the practical side, this parameter can only be useful for some specific tasks — for example, looking for an external charger for a battery or buying a spare battery. In addition, this parameter must be taken into account when comparing different batteries in terms of capacity (for more details, see "Battery Capacity").

Battery capacity

The capacity of the battery supplied with the tool.

Theoretically, the higher the capacity, the more energy the battery accumulates and the longer the tool is able to work on a single charge. In fact, however, two points must be taken into account. Firstly, only batteries with the same voltage can be directly compared in terms of capacity in ampere-hours (if there is a difference in voltage, you need to convert the capacity to watt-hours using a special formula, and use these values already). Secondly, the actual battery life will depend not only on the characteristics of the battery, but also on the power consumption of the device itself; at the same time, the power consumption for battery models is not directly indicated in the characteristics.

Handle material

Plastic. Relatively simple and at the same time quite practical, as a result — a common material. Plastic perfectly resists moisture, almost does not cool hands in cool weather, and is relatively inexpensive. As for strength and reliability, they are generally somewhat lower than those of metals, and most tools with plastic handles are designed mainly for simple work with relatively low loads. However, there are exceptions — for example, powerful loppers, which use high-quality durable plastic grades for handles. Anyway, for additional convenience, handles made of this material are often supplemented with rubber pads.

Steel. The key advantage of steel is its high strength, which makes it possible to use this material even in the most powerful tools designed for thick branches. Compared to another metal — aluminium — steel weighs a little more, but costs less. For additional resistance to corrosion and ease of holding, steel handles can be coated with paint or equipped with additional overlays, most often of rubber or plastic.

Aluminium. Another metal used for handles is along with steel. Aluminium differs from it, on the one hand, in lower weight and better resistance to corrosion, on the other hand, in higher cost. However, the difference in price is not so great, so these handles are also very popular. They can also be equipped with various overlay...s for added convenience.

Tree. "Classic of the genre", not out of use today. The wood is pleasant to the touch, does not cool hands in cool weather and looks good. In terms of reliability, this material is comparable to plastic: it is inferior to steel and aluminium, but it is quite applicable even in fairly powerful tools. The unequivocal disadvantages of wood include poor resistance to scratches and chips. Because of this, accidental contact with sharp objects can lead to the appearance of chips, fraught with splinters. In addition, this material does not tolerate constant contact with moisture, and it is advisable to store a tool with wooden handles in a dry place. Note that for a number of reasons, the tree is used mainly in one-handed tools.
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