it has been about a week that I have faced this problem with my power supply...the problem is that I have to keep the battery plugged in all the time and the laptop will turn off immediately otherwise...when I put the mouse on the battery it reads " 0% availabe, plugged in, charging" but it doesn't get charged at all...plz help meeee...thank you
If when you have the old battery removed and the laptop still works ok then yes it is the battery. Googling laptop battery life will get you lots of conflicting info on the subject. Generally the battery warranty is 1 year. After that you are on your own. The life is dependent upon how the battery is recharged (fully drain before recharging) though for new batteries that is not so much a problem, in theory.
Got a battery depot nearby you can get the battery tested? But I would just go ahead and replace it.