All that other stuff impacts battery life in a huge way. Those variables matter. You can&#x27;t just remove them, call it a &quot;worst case scenario&quot;, and walk away. That is not valid.<p>When a reputable site like Anandtech reviews a laptop, they don&#x27;t force it to maximum performance mode, because nobody that cares about battery life would ever do that. It&#x27;s testing a scenario that _doesn&#x27;t matter_.<p>In fact, not only is it not the default, but maximum performance mode doesn&#x27;t even _show_ by default-- you need to expand a &quot;show additional plans&quot; dropdown in the power control panel to see it. Opera went to the trouble to do that, and it was not by accident.