The first rule you need to be familiar with when choosing a cordless drill is this simple fact-the battery you choose to power this tool will ultimately determine the strength and torque you will get. Obviously, the higher the voltage of the battery, the more power you can expect to get from your cordless drill. While this seems to be very exciting option, there are tradeoffs to be made with a higher voltage cordless tool. There is the burden of additional cost and additional weight if you are going for a higher voltage solution for your drilling needs.
Weight - this is an important factor which you must keep in mind. You will find that some drills are lighter than the rest and hence you can hold onto these for a longer period of time and you will also be able to operate it for a longer amount of time. If you wan tot work on an installation project then these ones are the best for you. Weight is something which you really need to pay attention to. If you see that it weighs a few oz you will think that it isn't a big deal but then after you hold onto it for a long time then you will start to feel the difference.
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Let's look at a typical comparison to prove this point. A normal 9.6 volt cordless drill will weigh around 3-1/2 lbs and costs you $35-$150 a piece, depending on the model and brand you choose. If you opt for a higher voltage tool, a 19.2 volt cordless drill would weigh up to ten lbs and costs anywhere from $120-$300 a piece. If you are looking to get more power and torque from a cordless drill, then it may justify the cost of getting a more expensive version. But if you are merely looking to drive screws in your own home, then it would not be a wise move to waste your hard-earned money on a powerful 19.2 volt cordless drilling. It is much harder to use too, because of the additional weight. Under these circumstances, a lighter version would suit you best.
However, all laptop computers are not built the same. There are differences that you need to be aware of in your buying decision. This will permit you to buy the best one Lithium battery stocks for your needs.
ONickel Metal Hydride (NiMh) - Popular battery about 1-2 years ago. They are lighter than Nickel Cadmium batteries, but heavier than Lithium mines Ontario batteries. These should be cycled once in a while for optimum performance.
Battery memory affect is the length of time a battery will work before it needs recharged. The battery 'learns' such period of time through how you use it. If you repeatedly use your laptop for one hour and then charge it, its battery will learn to stay strong for only one hour. Using a Lithium battery and using it until it is almost dead and then recharging it will greatly increase the period of time that the battery will stay strong. Please make sure to read the manufacturer owners manual to also find out more about the battery life.
Another one of the best drills out there is the Panasonic EY7540LN2L model. It makes fastening jobs a cinch. It is lightweight, and ergonomic. It is extremely easy on the wrist and hands, so it is comfortable to use. It has long lasting lithium batteries for longer jobs. It is an impact driver, and is definitely versatile. It costs more than the other two drills, but it is still one of the best. Overall, any of the drills mentioned above would be a great cordless drill to own.