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I have Install Ubuntu 18.04.Battery is draining very quickly approx 1:30 hr only. while in window same laptop have upto 4:50 hr battery. I have Lenovo Ideapad 310 (i5 6th gen).

marked as duplicate by waltinator, N0rbert, Goddard, karel, pomsky Jun 1 '18 at 16:14

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First, read this Ubuntu Help article about Power & battery

If not enough you may want to install TLP

TLP brings you the benefits of advanced power management for Linux without the need to understand every technical detail. TLP comes with a default configuration already optimized for battery life, so you may just install and forget it. Nevertheless, TLP is highly customizable to fulfill your specific requirements.

To install TLP :

sudo apt install tlp tlp-rdw
sudo tlp start

Then customize suspend setting: System Settings -> Power -> Suspend & Power Button.

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