“It's extremely frustrating to run out of battery on your computer, whether you are out traveling, watching videos, or you have just left your charger behind. Our new power saving mode will nudge you when the laptop starts to consume battery, and, when enabled, it can increase the battery life by as much as 50%,” says Krystian Kolondra, SVP of Engineering for Opera.
Battery saving on Opera for computers is possible thanks to optimizations, such as reducing activity from background tabs, adapting page-redrawing frequency and tuning video-playback parameters.
Once the laptop's power cable is unplugged, the battery icon will appear next to the search and address field in the Opera browser. Click the battery icon to activate the power saving mode and flip on the switch. The browser will also detect when the laptop’s battery is running low and will suggest enabling power saving mode.
You can try out the Power Saving Mode by downloading the developer version of Opera 39. The update also features a smarter way of managing memory, which ensures that constantly opened tabs like Gmail and Facebook will be much more responsive.