Jeff, I don't know what to say right now. I've been using mine connected to AC for fear our power goes out. I did use it last Thursday for four hours that evening and had 40% left when put it on the charger, but was only using Chrome, Word, Outlook, OneNote (not active - background) and RingCentral. That would average out to 6.67 hours, in line with Lisa's findings. Your results seem a bit subpar, but could you have a background tab among those 12 that was churning the battery? In fact, I would still think that Chrome itself was vampiring the battery.