Cordless Drill Or Corded Drill ?
Power, mobility and weight are all considerations in choosing a drill.
A cordless drill offers high mobility and a wide range of available features. Voltage ratings of 4 to 8 volts are sufficient for light-duty cordless screwdrivers, but drills with 12 to 18 volts will meet most homeowners' work needs. A high-power model handles heavier work, but more voltage means the tool has a bigger, heavier battery. A cordless drill battery needs recharging periodically. You may want to have a spare battery available so you can keep working while you recharge. To compare the run times of batteries — how long they will be effective during use — look at amp-hour ratings. More amp-hours and more volts provide longer run time, but the battery charge level, material you're working with, level of continuous use and even temperature affect how long a battery lasts.
A corded drill offers high power and is lighter than a cordless model with similar capabilities. An amp rating represents the power of a corded drill. A steady power supply means greater run time and no need to stop to recharge a battery, but the cord does restrict mobility. Depending on how far your work area is from a power outlet, a corded drill may need an extension cord.
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