Opera has updated its browser for Windows and OS X with optimizations to help save battery life on laptops. The new power saving mode, available for preview in Opera’s latest developer build, is accessible via the battery icon that shows up when your laptop is unplugged from mains power. The company says its browser does things like reduce activity from background tabs, adapt page-redrawing frequency and tune video playback parameters to cut down on power usage. In addition, there’s a new memory management method at play in this version that helps things along. It adds that these tweaks, along with…

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