I guess it depends on which one you buy. I can't get 3 hours out of a new battery for the w510, but the HP Spectre x360 I have for work can go the best part of

I guess it depends on which one you buy. I can't get 3 hours out of a new battery for the w510, but the HP Spectre x360 I have for work can go the best part of a day without charging