Select your product to confirm this information applies to you
How to calibrate battery monitor and how can I tell what battery percentage I have in the Aera 760?
When you power on the unit for the first time after receiving it, you will need to calibrate the battery sensor. To do this, make sure the unit is not connected to external power. Discharge the battery by letting the unit naturally power off. Then connect the unit to external power and let it charge until the battery percentage reaches 100%.
One of the new features that was added to this new device is battery percentage. To see the battery percentage, simply touch the battery icon on the top right section of the screen.
This will open the “Power Information” window where you can see what percentage your battery is on.
For more information, please visit this link.