Apple's 10 hour battery life estimate assumes that you are just browsing the web. If you want to do "pro" activities put the CPU/GPU under any sort of sustained

Apple's 10 hour battery life estimate assumes that you are just browsing the web. If you want to do "pro" activities put the CPU/GPU under any sort of sustained load, the smallness of the battery will become apparent very quickly (see for instance http://arstechnica.com/apple/2016/11/review-cheapest-2016-macbook-pro-is-good-but-its-missing-all-the-cool-stuff/4/ http://arstechnica.com/apple/2016/11/review-cheapest-2016-ma...)