Not jumping in any hurdles here and so far since getting my 13" MacBook Pro with TB, 512gb been getting 10 hours on the battery through regular use. Now mind you I am not using Final Cut, Lightroom, Guitar whatever. I am using basic apps like Excel, Numbers, Pages, Word, Mac Informant, Fantastical, Omnifocus, Day One, Safari, Mail, Outlook, Hallmark Card Studio, PowerPoint or KeyNote, Quicken 2017 etc. I've watched a few TV episodes, and a movie so far. It's been great and I have been satisfied.