Until new nano lithium technology comes in later in 2009, mobile phone batteries are still notoriously flaky. Just when you need to make an important call the battery indicator tells you the charge is all but extinct. You may have conditioned your battery in line with all of the advice and old wives tales floating around but still have to re-charge yours every day. Short of buying a spare and keeping that charged what can you do?

If you have your PC case off you will see something on the motherboard that looks like a small thick silver coin. That is the battery. There are other types of battery used on newer machines (Ni-Cad, NVRAM) but these much less frequently found and so I won't discuss them further.

Why is this important? If you have a relatively new PC the only problem you will get are error messages relating to the clock on start up. No big deal. If your PC is older then a low battery could be a nightmare. I had a PC which once cobalt mine every few months refused to boot. Rather than take the PC in for repair or start replacing parts myself the first thing I did was look at the BIOS settings. It was soon obvious that the BIOS settings were corrupt (wrong bus speed). I put a volt meter on the battery and sure enough it was reading 2.2 volts.

At only 6 1/8 inches long and having a weight of 3.4lbs including the battery, you can transport it anyplace. It also arrives with a company bag and tool box, so you can take it anyplace without breaking it.

The Makita BDF452HW cordless drill comes with an 18-V Lithium battery stocks-ion battery and it charges in only 15 minutes. That's a much quicker charge time than almost any other drill you can find. Along with the quick-charge, the battery life is also very good so you don't really have to worry too much about it dying on you.

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.

These can be found at your local PC repairs store in many cases. If they do not have them in stock, they may be able to find them for you. The best news of all is that they will likely be far cheaper than what you would have to pay with the manufacturer. For the most part, you will likely purchase a Lithium Ion battery for your laptop. This is extremely popular and the type used by most manufacturers to date. All you need to do is contact your local PC repairs shop and ask them about any laptop batteries they might carry or if they can get them.

Compare the prices of regular cellphone batteries to cheap cellphone batteries and you will realize that you definitely got a good deal. Just have these batteries tested before buying them. See if these are compatible to your cellphone.