While I can't call laptops durable (see Websters) your 7 hour request is iffy.
http://www.notebookcheck.net/Lenovo-Yoga-3-14-Convertible-Review.138000.0.html hit 7 hours but that's a new battery. After a year, the battery will wear down and unlikely to get 7 hours. Also under load it plummets to 2 hours 15 minutes.
So to hit 7 hours as it ages you need to start at a 14 hour battery. Battery time is expensive in cost, weight and more. I'd be sure to have it on AC anyway.
Hi guys,
I'm looking for a laptop mostly for school and organizing. I want a durable laptop with good battery life (7 hours of use minimum). I will not be doing any high-demand activities, but it will have to run very smooth with multi-tasking low and medium demand programs.
Now my main question is, are convertible laptops any good? I would really like a 2-in-1 tablet and laptop, but only if it works well. The best I have found is
LENOVO YOGA 3 Intel Core i5-5200U /14"/Full HD/8GB/256GB SSD/NVIDIA GeForce 940M/Windows 8.1
Or should I stay with the regular ultrabooks, and maybe go for Dell XPS?

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