Called Dell tollfree and enquired about authorised centre. Called them .. Price 1999/-
Checked on Flipkart I got the same thing for 1599/- giving lesser warranty of only 90 days compared to market 1 year. But that is not to worry. Its ok... Batteries normally work fine for 1 year. After that they give less output. so warranty is most required after 1 year which the company does not give. So Flipkart is okay.
Price difference is too much. Saved a lot
Happy Now :)
Laptop Batteries -- Best rate @ Flipkart WS Retail