Batteries in set
Most modern power tools use replaceable batteries, and then this paragraph indicates the number of such batteries. Such tools can be equipped with several batteries, usually
2 batteries(
models with 1 battery are not widely used).
In addition, quite a few modern cordless tools come in a configuration colloquially known as a “carcass” — namely,
no batteries at all. This option is relevant mainly for two cases: if the user wants to choose a power source separately, at his own discretion, or if such a source is already on the farm. Regarding the second option, it is worth noting that many large manufacturers use universal batteries suitable for different types of branded power tools. So a battery, for example, from a previously purchased jigsaw or grinder may well be compatible with a rotary hammer of the same company.
Battery capacity
The capacity of the battery that the tool is equipped with the appropriate type of power supply (see "Power Source").
Capacity is essentially the amount of energy a battery can store. The more powerful the device, the more energy it needs to work and the higher the battery capacity should be so that it does not have to be charged too often. At the same time, capacious batteries have a large weight and dimensions, which significantly affects the convenience of work. Therefore, the power of the cordless tool is relatively low — otherwise, too bulky batteries would have to be used.
To some extent, this parameter also determines the time that the tool is able to work without recharging. However, taking into account the fact that different models can differ markedly in power consumption, it makes sense to compare battery properties only with tools with very similar characteristics — and even then very approximately.
Note that the same tool can work with batteries of different capacities — it is enough that they are compatible in terms of connectors and operating voltage.
Charging time
The time required to fully charge the battery used in the tool using the standard charger.
For information on cordless tools in general, see “Power Source.” And charging time data allows you to estimate how you will have to organize your working hours and how long breaks you will need to charge your batteries. However, the specific meaning of this parameter also depends on the number of batteries included. Let us remind you that there are often several of them at once (see “Included battery”), and while one battery is working, the others can be charged. This allows you to reduce breaks to a minimum, or even do without them completely. But if there is only one battery, breaks for charging will inevitably be required in full, and
rotary hammers with fast battery charging will be very useful.
In box
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Additional handle. The presence of an additional front handle on the hammer drill, usually located at the base of the chuck. This handle can be non-removable or removable, rigidly fixed or movable. Holding two handles with two hands is much more convenient than holding one and the body, as it allows for optimal distribution of the load on the hands; this is especially important during long-term work and processing of “heavy” materials.
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Depth gauge. A device that allows you to make holes of a strictly defined depth in one go, without constant measurements and without the risk of drilling deeper than necessary. Usually looks like a rod fixed to the body of the hammer drill parallel to the working tool. When used, this rod extends to such a length that when the desired depth is reached, it rests against the surface of the material being processed, preventing the drill from moving further.
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Chisel. Complete attachment for impact work with a hammer drill in the manner of chasing, leveling hard surfaces, chipping tiles, bricks, concrete, etc. Different types of chisels are produced for different tasks — flat, blade, groove, crushing peaks with a sharp tip.
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Boring bit. The presence of Boring bit in the delivery set of tool designed for processing various hard materials by drilling with impact. Buying such a s
...et eliminates the need to look for a drill separately, but the characteristics of the complete attachment must be clarified before purchasing, since they may not meet the buyer's requirements.
— Charger. The presence of a charging unit in the kit allows you to charge batteries. Accordingly, for models with batteries, this accessory is necessary to power the battery. However, there are models without a charger. And hammer drills with it can differ in the model of the charger, the name of which will allow you to learn more about its characteristics and, if necessary or as needed (breakdown), buy a similar one.
— Case included. The delivery set includes a special case that facilitates storage and transportation: it provides protection from impacts and adverse conditions (moisture, frost), is equipped with a special handle for carrying, in addition, in the case, along with the hammer drill itself, a set of working tools, replacement cartridges, etc. can be placed.
— Dust collector. The hammer drill comes with a special dust collector. As the name suggests, it is designed to collect dust generated during operation, which could otherwise cause significant inconvenience. It usually looks like a bag or container attached to the body; it can be either replaceable (thrown away with the collected garbage) or permanent. The dust collector slightly increases the weight and dimensions of the hammer drill, but it can be removed if necessary.
