When the battery of your Windows laptop is running low, your system will emit a beep to warn you about it and also display a notification to this effect:
Your battery is running low. You might want to plug in your PC.
We have already seen how to change Battery Level Notifications in Windows and how to configure Windows 8 Power Plans. In this post, we will see how to change WHAT Windows does, after its battery level drops below certain levels.
By default, Windows sets the following levels as defaults during a low battery stage:
- Low battery level: The default value is 10%.
- Reserve power: The default value is 7%. At this point, you PC may flash a warning and you will need to save your work, and then find an alternate power source or stop using the computer.
- Critical level: Your laptop may ask go into hibernation. The default value is 5%.
When your battery reaches a Low level, it will display a notification and execute a pre-set action.
Change Critical & Low Level Battery Action
To change the Critical and Low Level action for the battery for any Power Plan, you will have to open Power Options in the Control Panel > Change Plan Settings > Change Advanced Power Settings. In the box which opens, navigate down to the last item, ie Battery.
Here for each plan, you can configure and set WHAT your Windows should do, after its battery level drops below certain levels. The options for “while On Battery and “while Plugged In” are:
Low battery action: Do nothing, Sleep, Hibernate, Shutdown
Critical battery action: Sleep, Hibernate, Shutdown
The default for the first is Do nothing and for the second one is Hibernate. You can change it to suit your requirements.
You can also create a laptop battery full charge notification.
How to turn off Hard Disk after a particular period of idle time to save power may also interest you.