I am very pleased with this Dell laptops. I am using this laptop for last four years and no complaint for battery life, no windows crash, everything amazing(thanks to DELL). I buy this laptop when I was pursuing my Bachelor of Engineering in Computer Science in 2012. I used to work on it continuously 6-7 hours in the college. While buying it I was recommended hp, acer, lenovo, etc. laptops but I choose best which I realise later. But overall i am very happy with its performance over the years.