A genuine cell phone battery, that means original cell phone battery usually available with the mobile set, can be recharged a number of times. If the phone is not used frequently, then the battery should last for 3 years or even more. I have found that if music from cell phone is heard from cell phone speaker then it discharges very quickly than it is heard through head phone. Basically the life of a battery depends on the usage. However, other conditions also matter when dealing with a battery. Actually it is instructed to every customer when one buys a mobile from any shop that the phone should be charged by keeping it switched of. And it would have been more better if one avoids talking in cell phone by keeping the charge plugged on. With lithium ion and nickel cadmium batteries, it is a good idea to charge the battery when it is extremely low. This increases the life of a battery, as well as ensures that the battery is clean before being recharged again. So if few things can be kept in mind then the cell phone battery should last for 4 years.
