Cordless Power Drills - Why Every Man Needs One
Cordless Power Drills - Why Every Man Needs One
A cordless power drill is an electric drill that is commonly used for drilling holes in places that have no nearby power outlet. It uses rechargeable batteries but since they are limited in capacity, those who use it often have spare battery packs so they can charge the other set while working. Cordless drills are available in hammer drill configuration and usually have a clutch setting for driving screws. Other types of cordless power drills include a right angle drill for driving screws in tight spots and those that can drill holes with large diameters, although they can quickly deplete the battery of the such drills.
The earliest forms of cordless power drills used 7.2 V battery packs but since then, several innovations in the technology have allowed for the usage of more powerful batteries with higher voltages, up to 36 V which can produce as much as torque as a corded power drills. However, the recommended voltage for a cordless power drill for regular use is 12-18 V, as those that are less than that tend to be too weak while those that are more than that are way too bulky and are very hard to maneuver because of their size.
The common rechargeable battery that is used for cordless power drills are nickel-cadmium batteries. Most people use it because it is cheaper than the alternative, it is more difficult to damage when discharged, and they last longer in terms of charge/discharge cycles. However, nickel-cadmium batteries have limited life, are self-discharging even when not used, and can internally short circuit due to dendrite growth. The alternative for nickel-cadmium batteries are lithium ion batteries. These batteries are lighter, have shorter charging times, and have longer life. The drawbacks of these kind of batteries is that they are very expensive and they do not work well in cold temperature. These are the factors that should be considered when choosing w
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