On 10.8 to probably 10.12-ish (have not checked precisely) there is a binary /System/Library/CoreServices/Menu Extras/nu/Contents/Resources/lowBatteryWarning that is invoked by SystemUIServer which is the one that actually sends the notification to NC. So, feel free to ask technical questions about the product.Ĭhange low battery notification from 10% to 20% was marked as a duplicate of this (even though it's not), so I'll answer it here.Īs the other answer points out, the low battery notification is generated by SystemUIServer when the inbuilt battery icon menu extra is enabled. Battery levels and changes are exposed through Power Manager's AppleScript interface.ĭisclosure: I am an engineer who works on Power Manager. More advanced abilities such as stopping music from playing and integrating the warning into your workflows is possible.
Simple battery monitor for mac software#
Software such as Power Manager can be used to trigger scripts, sounds, and actions when the battery level drops: Earlier versions or OS X instead report it at 15% or less. Note: Portables using OS X Mavericks v10.9 or later display the low battery warning when the battery has approximately 10 minutes of power remaining. Enable the "Show battery status in menu bar" check box to display the battery status menu item.Follow these steps to enable the battery status menu item: If you don't receive a warning when your battery has a low charge, generally reported at or under 15%, it may be because the battery menu bar icon is disabled. See Apple's About Mac notebook batteries page, in particular this section: The low battery warning doesn't display There will also be a critical low power warning when the computer needs to emergency shut down. The battery indicator in the menu bar will turn red when the battery is low.
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