If the battery icon has retreated into the hidden icons section of the taskbar’s Notifications area or disappeared from view altogether, you can restore it quickly. Click or tap either “Select which icons appear on the taskbar” or “Turn system icons on or off.” On the next screen, tap the button next to Power to On from Off. (If you wish to display icons from third-party programs, choose “Select which icons appear on the taskbar” to turn on notification icons for apps like Dropbox or an online backup service.) Once you have restored the battery icon to the taskbar, you can tap it, click it or hover the mouse cursor over it to see the percentage of battery life left on the current charge. In the System Preferences box, click the Energy Saver icon and then turn on the checkbox next to “Show battery status in menu bar.”

Source: New York Times June 13, 2017 16:30 UTC