Cordless power drills/drivers work like their corded counterparts, only there’s the convenience of not having to deal with a tangled or damaged cord, or not bothering to look for a power outlet. A cordless power drill is the most ideal for exterior repair work and outdoor carpentry, although it can be used indoors too, owing to its portability.
Cordless power drills/drivers have surged in popularity among DIY hobbyists and professional handymen, and it looks like its popularity is not going anytime soon. If you ask people what is their first cordless tool, most would answer it's the cordless power drill.
All cordless models come with keyless chucks which measure either 3/8" or ½". Battery power ranges from 10.8 to 36 volts. Like corded models, cordless versions feature high and low speed settings.
While power is the reason why people choose corded power drills/drivers, convenience is the reason why others go for the cordless counterparts. This tool's biggest advantage is the absence of the bothersome cord, which enables you to carry it anywhere you need it. You can find a variety of cordless power drills/drivers with several different features.
If you want to purchase a cordless power drill/driver, make sure that that you have at least two batteries. You don't want to experience battery life problems in the middle of the project and wait for the unit to be fully re-charged before continuing, so it's always better to carry more than one battery. Look for the kits that come with two batteries.
The power that the cordless power drill generates is determined by the voltage stored in their its batteries. The higher the voltage, the higher the torque the machine will create. Current cordless power drills have the voltage that's powerful enough to drill big holes into lumber and flooring.
But there's a compromise: the bigger the power a cordless power drill uses, the heavier its weight becomes. A cordless drill with 9.6 volts typically weighs 3.5 pounds, so using it for longer periods can cause hand pain and fatigue. The older cordless drills only have pistol grips (like the hand gun), but now the newer models are also available with a T-handle for a more comfortable and balanced grip, making them most especially ideal for heavier drilling. Plus, you can use the T-handle models for drilling tighter spaces. However, the pistol types are still often the preferred choice for making powerful drilling as well as driving screws.
The adjustable clutch (or clutch ring) should be one of the standard features of a cordless power drill/driver. You can see the clutch just behind the keyless chuck (the part which allows you to replace drill bits easily). The clutch provides the user more control over how much torque is applied to the screw in order to: 1) prevent it from being over-driven; 2) prevent the head from being snapped off the screw; 3) and avoid creating damage to the material being worked on. The clutch in the drill works quite like the clutch in the automobile; it automatically disconnects the motor's drive shaft from the clutch's drive shaft when the preset value is reached to its limit.
The clutch usually has several settings. Adjusting the clutch to a low setting will cause it to disconnect at low torque, making it ideal for tasks such as driving screws into the regular drywall. If you need to drive bigger screws or drive screws into a harder material, then you will have to adjust the clutch to a high setting.
Depending on the job and provided that it is charged properly, the cordless power drill/driver will work to one's advantage. It is perfect for doing small, quick household fixes or working on hard-to-reach places. It may be useful as a secondary tool for seasoned handymen/contractors or the main tool for DIY home builders.