To a certain extent, the power of the battery drill itself is related to the voltage. To run the most powerful cordless drills, you also need a higher voltage for trouble-free and correct operation of the electric motor. Beware of a common trick of sellers – some write the maximum voltage in the parameters and some average ones. The voltage value, like any other electrical quantity, fluctuates in the course of work. It may happen that a cordless drill with a voltage of 20 V will not be as powerful as, for example, the one with 18 V. It is good to verify the exact characteristics of this data.
The higher the capacity of the cell, the longer you will keep the drill running before you need to charge the battery. The unit of capacity is an ampere-hour, referred to under the abbreviation Ah. Batteries with a capacity of 1.5 Ah used for occasional household work are considered an absolute standard. If you buy a capacity of over 3 Ah, the cordless drill becomes your indispensable helper in professional activities.
Drill Speed and Torque Adjustment
When choosing a cordless drill, take into account the possibility of changing the speed of rotation and torque. These are parameters translating into comfortable, fast and accurate work. In terms of speed, three types of devices are usually offered.
The maximum torque, or the greatest torque the device can exert, is another common name for it. An additional feature found on many cordless drills and screwdrivers is a hoop that may be used to change the torque. Most of this is situated above the chuck.
For torque, you usually have a choice of several stages. If you are looking for a more versatile device, choose a larger torque distribution to achieve first-class power control of the drill’s battery. For screwing, you only need a lower speed so that you do not tear off the thread or screw head unnecessarily. Too high a force can also break the screw. When drilling, the torque can be increased.
An important feature that we find on the vast majority of cordless drills is also the possibility of choosing reverse. Normal operation is clockwise – the threads of drills, screws and screws are manufactured in such a way that drilling or tightening occurs in this direction of rotation. Sometimes, however, the opposite direction of rotation is also useful, thanks to which, on the contrary, you can easily unscrew the screws. Reverse is also essential for convenience when loosening the chuck.
Drill bit types
Of course, the equipment with a cordless drill also includes the appropriate set of drill bits. The most common drill bits are:
- Brad-point drill bit – Best for drilling into wood. The brad in the middle of a brad-point drill bit is the main part that helps keep the hole straight and clean. This brad holds the drill bit in place, and the extra-wide holes around the bit make it easy to get rid of chips and dust.
- Twist drill bit – best for drilling into wood, plastic, and light metal. A set of twist drill bits is a common addition to the toolboxes of many do-it-yourselfers. Due to its intended application in a range of general purpose drilling jobs, twist drill bits are among the most popular drill bit kinds. Wood, plastic, and light metal may all be drilled through with the help of these bits.
- Masonry drill bit – best for drilling into masonry materials – Masonry drill bits are designed to cut through difficult masonry materials like concrete, brick, and mortar, as their name suggests. These parts are typical for many experts that would need to bore through the brick outside of the property, such as plumbers or electricians.
- Glass drill bit – best for drilling through non-tempered and ceramic glass. Drilling into glass can be tricks, but these special glass drills can help. These drill bits are mainly used for drilling in non-tempered and ceramic glass. Can also be used for drilling into tiles.
- Drill saw bit – best for cutting holes in metal or wood. In most cases, jigsaw is used to drill various holes in wood, as well as iron. However, for a better and more regular round shape, we recommend this circular saw bit.
- Spade drill bit – best for holes into wood. A tool for drilling a larger hole, it is not a classic straight shape, the drill has an extended flat body right after the tip, but it is suitable for drilling rather rough holes, where aesthetics are not involved (it is used at lower speeds and high force). It is used for drilling in wood.
- Annular cutter drill bit – best for cutting circular holes through metal. Instead of being created for cutting into wood, annular cutter bits are made for cutting into metal.
- Adjustable wood drill bit – best for holes through wood. Without changing the bit, adjustable wood drill bits may be adjusted to drill holes of different diameters.
- Step drill bit – best for drilling into wood. special conical drill bits in which the diameter increases from the tip.
- Tile drill bit – best for holes into tiles. Drilling into tiles has never been easier. There are many tips on how to drill into tiles with conventional drill bits, but with this drill bit, drilling into tiles is easy and without the risk of breaking the tile.
- Countersink drill bit – best for drilling countersink, and counterbore holes for screws. The purpose of this drill is mainly in the preparation of holes for embedding the screw heads so that they do not protrude from the material.
You should always think about which drill bit to choose before you start drilling. For drilling in non-ferrous metals such as zinc, brass, copper and the like, high-speed steel drills are suitable.
How to choose the right drill?
Keep a watchful eye on two crucial values: voltage and torque. Discover the ultimate truth: a higher voltage equals a mightier drill. Discover a range of cordless drills with varying voltage options, including 7.2V, 18V, and 20V.
Is 12V drill enough power?
It is unlikely that a skilled carpenter or handyman will use an 18-volt tool during the course of a day’s work because they can use a 12-volt tool continuously. These days, 12-volt drills and impact drivers have a lot of the same functionality as their 18-volt counterparts because to a technology called lithium-ion.
What does 13 mm drilling capacity mean?
As contrast to the actual capacity of the chuck, the term “drilling capacity” refers to the greatest size of the hole that can be produced in a certain material (according to what the manufacturer advises), rather than the capacity of the chuck itself. Your chuck, for instance, may have a capacity of 13 millimetres. Because their shanks are smaller than 13 millimetres in diameter, the majority of 35 mm bits will fit into your chuck.
Can a 12V drill go through concrete?
Yes, a 12V drill can make a hole into concrete, but the best and easier way how to drill a hole into concrete is to use a corded hammer drill.