I loved this laptop . When I was planning to buy this product I was afraid about backup it is giving long lasting backup its having 4400 mah capacity battery. I am using this product from august 2015 and I do not have any complain. Love it keep your good work continue with no compromise with quality . It is giving backup of upto 3 hours. Now after5 months it giving the full backup the backup at all. this product is value for money. this is awesome product.Sound quality is good.