If you own a laptop computer, eventually you will need to replace the battery that was supplied with the computer when it was originally purchased. This is a true statement, and is not due to any fault of the battery itself but simply because the current technologies and battery chemistries result in batteries that have determined lifespans.

A laptop battery is evidently a rechargeable battery, which is also known as a secondary cell. The usual battery chemistries that have been employed in laptop computer batteries up to date have included nickel cadmium batteries, nickel metal hydride batteries, and lithium ion batteries. Most laptop computers today are shipped with lithium ion batteries.

Lithium ion batteries are most commonly used in today’s laptop computers because they have very good energy to weight ratios, do not suffer from the memory effect phenomenon, and since they lose their charge slowly. Lithium ion batteries have been theorized as long ago as the seventies, but have not found working application until fairly lately. Lithium ion batteries are also more ecologically friendly as they don’t carry any heavy metals as most of the chemistries of the earlier rechargeable batteries.

Over time, you will begin to notice that your laptop computer’s battery does not run the computer as long as it did when it was a fresh and new battery. This is due to the fact that the internal resistance of the battery increases as the battery ages and effectively cannot hold as big a charge as a fresh battery. Your computer’s utility software package will normally indicate the charge level of your notebook’s battery and will warn you when the battery starts to give out.

When you know that you need a replacement laptop battery, you will find that there are several places available from which you can buy a battery. These include the original equipment manufacturer, otherwise known as the OEM vendor, specialized stores that sell computer supplies including OEM and generic battery brands, and a number of online sources. When shopping for a replacement laptop battery, you certainly would like to save money.

The easiest way to find a direct replacement battery for your laptop computer is to simply purchase a cell from the company that manufactured your computer. The downside is that you will always pay the most cash when you buy the battery from the computer maker. You may be able to find the OEM battery from a nearby computer dealer or an internet source, but often times there is no cost benefit connected with buying the OEM battery from another source and sometimes you may even end up paying more.

Most times, generic batteries provide the most value when you need to replace your laptop’s battery. It is commonly known that the factories that make these generic batteries also provide the batteries for the OEM suppliers. So basically you could be getting the duplicate battery that the computer’s manufacturer packages with a different label affixed. These generic batteries are available from your local retailer and from internet stores. These batteries can save you a significant amount of cash over the purchase of a battery provided by the computer vendor.

However, these generic batteries can be made at a number of different factories and, like anything else, some factories make better batteries than others. When buying a generic battery, you need to consider the reputation of the source and, as much as anything else, you need to ensure that the battery store will ensure that the battery will work with your computer. Laptop batteries are generally assured for a period of anywhere from 3 to 12 months and it is important that you verify that the battery operates correctly when you get it. Simply place it in your laptop computer and charge it as you usually would. If it charges fully and there are no warning messages from your power management utility, you know that you are all set. You also will have saved yourself a size able amount of dough by buying laptop computer batteries.

A study was performed to see if cheap laptop batteries could result in a savings to the consumer. The results were definitive that a cost savings of 50% could be realized.

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