If you're going to purchase a cordless tool, then you should really think about getting one with Lithium ion batteries. They cost more, and it's easy to think you could just buy a cheaper model and get a spare battery, but it's not the same. Lithium ion batteries are a true hassle free solution.

Speed - you can have variable speed option in these cordless drills. You need to buy a drill which will provide you with the appropriate amount of speed that you want. Depending upon the speed you will be able to screw on things a lot quicker or even slower. So keep the speed in mind while buying it.

If you would rather prefer an entry-level dSLR, then you better get Nikon's D3100. It offers fast performance, superior image quality, and unparalleled control. It features live view, 1080p HD video, and a guide mode that is very user-friendly. It has a three-inch LCD screen, DX-format CMOS sensor, 1080p HD video, and is 14.2 megapixels. It uses a rechargeable li ion stock ion battery as well as SD, SDHC, and SDXC media cards. Nikon D3100 is one of the lightest and smallest dSLR's available. It is the ideal camera for frequent travelers.

Li-ion Batteries last longer and charge quickly. A Li-ion battery and a quick charger make it possible to work all day with a cordless drill without stopping.

Avoid buying spares: Unlike wine and cheese, Li batteries do not improve with age. Avoid the temptation to buy spares, unless you use them frequently. Check the manufacture date, and never buy an old Lithium battery stocks, even if on sale.

Second, Remember not to play media devices like CD player when you are working with a battery. The point is the battery has to spin the CD. This will drain the Lithium mines Ontario battery power quite fast. So to stop the battery from draining fast by entertain yourself when there is power supply.

Memory effect will reduce the life of a battery. Modern Lithium-ion batteries do not suffer from memory effect, although it does occur in Nickel-Metal Hydride (NiMH) units when charged from levels other than 0% of battery capacity. If the (NiMH) unit was fully charged when initially at say 20% capacity, the resulting available capacity would only be 80% of the factory original. Of course every time you charged the battery, the total available capacity would reduce and eventually your mobile phone would prove to be increasingly useless. Nearly all new electronic devices are now powered by Lithium batteries. You should always condition your (NiMH) battery from new.

And that's about it; not so hard, right? So, although lithium ion batteries might keep us on our toes, utilizing these few simple practices will help you keep your batteries performing at their peak for a whole lot longer. Respect your stuff and in return you'll enjoy really great results.