I was concerned buying a refurbished laptop but I am so happy that I did.  I use it with a docking station when at my desk and want to use my monitor,  keyboard and mouse  but if I just want to surf the web, and use social media, or want to sit on the couch , the backyard or my bed, then  I just use the laptop  where ever I feel like - I've never tried to use the laptop on battery all day so can't say how long it has - it's never run low when I undock it and use as just the laptop though.  I really love the backlit keyboard that is built-in - it makes it nice to be able to see the keyboard. I can do everything I like with it and it was a fraction of the cost of the other computers I had looked at.  I