Does Opera battery saver mode works / extends battery life ?

When I turn on Opera battery saver mode, will it really save my laptop battery ? If so, is the increase of battery life big enough ?

Hi,

When you turn on battery saver mode in Opera browser, it should save the laptop battery. The feature is saving battery by reducing some activities in the background. The total increase of battery life depends on usage of computer, so it can be average or higher. In my experience, the battery life was extended by approx. 25%, what makes approx. 45 minutes.