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The screwdriver has a 4-volt battery that charges with the included USB cable. You cannot adjust the speed, which tops out at 180 rpm. The torque maxes out at 45 inch-pounds. There's a built-in work light, which is handy when working in cabinets or other dimly lit spots. The Hexdriver does not include a carrying case, however. LED lights - A hand extra to have, especially as assembling cupboards and wardrobes involves getting into lots of tight dark corners. Some also have built-in flashlights. In the case of electric precision screwdrivers, however, you also need to consider how often you will be using it. Lithium-ion batteries last longer, but if you are only going to use the screwdriver occasionally, Alkaline batteries can still give you excellent value.
Regarding materials, the Wera Kraftform Precision Screwdriver Set, the iFixit Pro Tech Toolkit, and the Xiaomi Electric Precision Screwdriver all have a wow factor when opening the box and using the screwdriver for the first time. But this feeling is for different reasons. A: No, electric precision screwdrivers generally don't have enough torque to drill holes in most woods. Drilling holes is a job best left for a proper drill with more power. Q: Do I need a drill or an electric precision screwdriver?It’s worth noting that metric bits have almost completely replaced Imperial-sized ones, but screws put in 50 years ago haven’t heard about this. Still, it’s possible to use a driver that’s slightly too small to loosen a screw, so it’s not worth worrying about having every possible size in your collection. A choice of the most common sizes, in both flathead and Phillips (cross-shaped) will do for most day-to-day jobs. Is it possible to build a toolkit without screwdrivers? We don’t think so. In the average home, you’ll find a vast array of different screws, all of which will – as sod’s law dictates – require the screwdriver which isn’t the one you’re holding in your hand. This is why it pays to invest in the best screwdriver set you can afford, so you’ll always have the right tool for any screw – be it Posidrive or Phillips, Torx or truss head.
Torque - Measured in Newton Metres (Nm), torque is the tightening force. Most electric screwdrivers have a torque of between 3 to 5 Nm, with some drill drivers having torque values of 30 Nm or even higher. A higher torque will make the screwdriver easier to use and allows you to drive screws into even the hardest of surfaces.As with any power tool, it is possible to injure yourself if you do not use the electric screwdriver correctly, but generally, cordless screwdrivers aren’t very risky. Avoid injury by keeping the tip of the tool away from your fingers. Take off dangling jewelry, and wear short sleeves while using the tool. And, of course, never use your electric screwdriver in wet conditions. When choosing an electric precision screwdriver, the most expensive or most powerful don’t necessarily carry the better value. If you only do occasional repairs, then something like the General Tools 502 is an excellent option for you. Sure, fancy features are nice-to-haves, but do you need them? Most electric screwdrivers contain rechargeable batteries and include a charging cord so you can power up the tool by plugging it into an electrical outlet. Today, more models also include a USB cord so you can power your tool up from a USB charger. Some very lightweight, lower-powered cordless screwdrivers rely on disposable batteries, however, usually AAs. The battery power of an electric screwdriver typically ranges from four to 12 volts. The more volts, the more power it has—both speed and battery life. If you need more speed and power for tough materials or hardy screws, go for a higher voltage option. Speed Most cordless screwdrivers are fairly light in weight. One to 2 pounds is common, with some very lightweight models being less than a pound. Heavier-duty tools, though, can weigh more than 3 pounds.
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