To the credit of Google experts, they finally reacted to this problem: the next version - Chrome 86 - with a new experimental feature turned out to be much more economical.
Currently, each tab is activated at intervals of no more than five seconds. At the same time, some of the functions hardwired into the browser are simply not needed if the user is not viewing this particular web page. In particular, processes such as checking scroll position, interacting with ads, or generating reports for magazines should not be performed if a tab is inactive.
Google recently tested an alpha version of the browser with the feature enabled. The experiment involved 36 background tabs open to random pages and one active tab open to about: blank.
After launching the browser twice, once with the feature on and one off, Google found that the laptop's battery lasted two hours longer - that is, 28%.