After win10 upgrade my laptop stays alive for maybe 1hour but before upgrade i used to work with my laptop for about 5hour. The same problem appeared when I was using Linux, the solution was 'bumblebee'-package, there wasn't a driver for my graphics card (I have an integrated and dedicated card) so it was exhausting the battery.
I don't it's problem with drivers now... at least it would be really weird.
Has someone a similar problem? Have you found a solution?