There are lots of factors related to the laptop if one would think on buying a laptop such as its specifications which includes the processor speed, hard disk drive total capacity, RAM, graphics card option, etc. Although all the above mentioned points are usually essential to consider on before purchasing a laptop，one of the very important factors of this portable device that makes it operate is the battery.

The laptop battery certainly is the most important part of the laptop as it is usually what makes the laptop portable. Consequently, the laptop wouldn't be portable in case the battery life of the laptop is not really good. You should require plugging in the portable laptop for an external source to keep your laptop working if your laptop battery gets malfunctioned or doesn't have a good battery life. It would accordingly be hard for you to take the laptop along with you to your workplace or perhaps any where else since you might need to plug in your laptop for an external supply entire period during your usage. Thus, it would be even hard for you to use the laptop in places such as trains and other leisure areas mainly because there would be no source of any kind of external power supply.

However, presently due to the advanced technology, it is also possible for you to purchase a laptop battery that would keep your laptop working for nearly 3 to 5 hours thus making it portable and also easy to use anywhere without using an external power supply. The time duration that the battery can't run non stop depends upon the overall power that is required to run your laptop and the different types of programs that you might possibly be using at that time.

Nothing else could be more frustrating to you than your laptop battery losing its power completely as this can no longer keep your laptop running on battery power supply while you have to keep your laptop working in order to complete a very important task or assignment but at that time you may be unable to find any external source for power supply. Consequently, if you have been through this then you would need to purchase a inexpensive laptop battery that will operate your laptop with appropriate battery life making you without any data loss.

As a result, you should have the knowledge of the model number of the battery that may be mostly located on the battery casing, the make and model number of your laptop to prevent choosing a wrong battery for your laptop.