A Quick Guide to Help You Pick a Cordless Drill

Battery Life & Size: The first question you should ask about the battery life of a drill is how long does it usually last? The second question is how long does the battery take to recharge? If the battery has a short life, you will want to have a couple of spare batteries to replace a "dead" one. You must also consider the need to have to constantly recharge the cordless drill's batteries. If a battery can last a little longer than other batteries, you'll be able to make it through a project or work day on just one or two batteries.  This is efficiency at its best!
Weight of Drill: The weight of the drill and battery combined are important. Even if you are used to handling power tools, by the end of a day your arms and body will be tired if you are using a heavy cordless drill. Your efficiency on the job and possibly your livelihood depend on investing in a product that will extend your energy a little further.  A cordless drill should also be purchased with one user in mind. In the ideal world, every person on a crew will have a cordless drill that fits their body and individual capabilities. 
Use of Drill: There are many uses for different types of cordless drills. Make sure you are purchasing the correct drill for your needs. This is an opportunity to vary the size of the drill you want to use. Is the drill you are considering for on the job or for every day use? Or is the drill simply for hanging pictures and completing light projects around the house? If the drill is for home projects, then investing in a drill that has a lower cost and short battery life would be acceptable.  A drill used for a full day of work or for heavy-duty projects requires a stronger drill, with extended battery life or rapid-charging capabilities.
Handle: The handle of the cordless drill is also an important thing to consider. If the handle of the drill doesn't fit properly in the hand of the main user, the person handling the drill will end up wasting time and energy. Carefully examine the drill's handle.  Is the handle appropriate for the size of the user, who might have smaller or larger hands? Is it ergonomically designed with complete comfort in mind? 
Speed: Another important consideration when purchasing a cordless drill is the speed of the drill. Can you adjust the speed or does the drill work at the same speed throughout its use? Being able to adjust the speed is important when you are working on projects that take greater precision and care. 
Brands: Picking which brand you want is as important as the other factors of the drill, but many people will pick a brand and usually stick with it.  Electrician tools are similar to buying a Chevy or a Ford. Once you buy one brand, you usually don't switch brand types.