ASCER BRAND HAS POWERFULL BATTERY BACKUP RATHER THAN ANOTHER BRAND OF PERSONAL NOTEBOOK OR PROFESIONAL LAPTOPE.I HAVE ASPIRE E 15 PERSONAL NOTEBOOK.ITS HAS MORE BATTERY BACKUP THAN THE OTHER WHICH I SEEN IN MY FRIEND HAND AND NEAR DEAR PEOPLE .SO I SUGGEST TO MY ALL FRIEND TO USE ASCER BRAND AND ANOTHER COOLEST FEATURE IS ITS WORKING PERFORMANCE ON WIFI HOTSPOT AND MOBILE HOTSPOT CONECTIVITY IS FAST THAN THE USB HUB.