Home Green Accessories Guide What causes laptop batteries to suddenly give trouble?

What causes laptop batteries to suddenly give trouble?

I bought an hp laptop just more than a year ago. Now, the message pops up that I should consider replacing battery. There is also some problem with batteries storage space also. The lap top battery usually saves whatever you are doing whenever batteries run out but it is not doing so. Can somebody help me with some appropriate solution? What can be possibly wrong with these laptop batteries? Waiting for your replies. Thanks.