I'm just passing the 6 hour 30 min mark, though my battery is a few years old. Its reporting as 75.8% capacity with 4% left, so another 20 minutes perhaps, gonna throw it on the dock here though.

I've got Atom open, Signal Desktop, Tor Browser Bundle (Youtube), Firefox with a few dozen tabs (Soundcloud, HN, etc). Couple spreadsheets too in LibreOffice, and Thunderbird & Transmission too. With a few of those closed, should be able to get some more battery life, but I don't feel in need of it.