I've found the battery life to be very good. It's hard to give exact numbers at this point but even though I primarily use my laptop plugged in at work and at home, I made a point of using it on battery along for a full day (work and home). I did a fair amount of web surfing, editing documents, emails, and a bit of YouTube, and I still had about 40% by late evening. I typically keep my display fairly dim and manage my power settings while on battery power. I would say given my usage habits getting over 10 hours isn't out of the question, but again, this is based on early estimates.