Most warranties, extended or otherwise do not cover the battery as it is a consumable part, meaning it is going to fail eventually regardless of what you do or do not do, thus it would be a waste of company resources to replace batteries after the first year. 
hello, Currently my laptop facing problem of  " Your battery experienced  permanent failure and need to be replaced." I had also called dell support but not enough satisfied. I have extended warranty like POW JUNE 04 ,2017 But call center mam told me that dell will not replace your battery after  1 year . So what i have to do now . I really have to buy new battery which will be too much costly for me after such extension in warranty . I had also attached warranty card as provided from dell . Do reply me fast .
What do you mean by POW warranty ? How to deal with permanent failure in 
battery ?