NOOK User Guide Power and Charging 18When the battery charge is critically low (too low for continued operation), your NOOK displays amessage to charge it and shuts down. The critically low battery level is about 5%.You must charge your NOOK before using it. It will charge faster using the power adapter. Whenyour NOOK has enough charge to run, it will start, but remember that it still has very little charge.You can use it, but should continue charging it.Battery Charge and Charging IndicatorsYour NOOK ships with a partially charged battery. We recommend that you charge your NOOKbefore using it.Your NOOK has the following indicators of the battery charge and charging.Battery Charge IndicatorsYour NOOK indicates in two places the amount of charge remaining in the battery:• With an icon in the status bar:Battery charge levels when your NOOK is not charging (from low to full charge):Battery charge levels when your NOOK is charging (from low to high):• With a percentage of full charge on the Settings page. The percentage is updated whenthe battery charge changes.In some cases, the Battery Charge on the Settings summary reads Not available. This is normal.It means that the software that reads the charge got some readings that it could not interpret.After a few minutes, your NOOK will get more readings and display the battery charge.Charging IndicatorsYour NOOK indicates in two places when it is charging the battery:• With a charging indicator light next to the data/charging port. When your NOOKis charging, the charging indicator light to the left of the USB port lights up yellow. When thedevice is not charging or is fully charged, the charging indicator light is not lit.
