Hello friends I am very happy with this Dell Inspiron notebook it is a very good device I am very happy with battery backup its battery backup is very good really it is a awesome device and I tell you that when you buy a not Book then I recommaded you this device its most big benefit that it is battery backup is very long and its graphical resolution also good and its performance is back and Dell service centre provide a good service and first help full service so overall Dell Inspiron not book is best buy it thank you very much tell.