The world has come across many ages till now beginning with Stone Age and this century is widely known as Age of communication. There are various endeavors made by mankind to improve the communication. One such is mobile phones. The phone is made portable with the help of portable source of power called the battery. There are two kinds called as primary and secondary or say disposable and rechargeable batteries. They have made things easier and life easy. Battery has made progress by increasing their backup time prior to the old ones. With this unbelievable invention mobile effectiveness is expanded at appartement a louer.