PiPO U3 - Manual (Page 16)

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Display: To set Brightness, Wallpaper, Sleep time-out, Font size here.
Storage: Check internal storage here. If you insert a Micro SD card, or
USB disk, you can check the total and available space for your Micro SD
card or USB disk. Please unmount it to safely remove it.
Battery: Check the Battery status here.
Display: Tab “Settings” → “Display” to set brightness, screen time-out,
etc.
Language & input: to set language and keyboard input.
Backup & reset: to go to submenu "back up my data" and "Factory
data reset". If you choose factory data reset, all data from your
tablet's internal storage will be erased. Choose this option carefully.
About Tablet: To check information about your tablet, such as Model
number, android version, etc.
VIII. Battery
Very Low Battery Full Battery Charging Battery
‘ ’ indicates that the power of Battery is full. When the battery level
becomes too low, a prompt comes up to note you to charge your
tablet.
While charging, you can check the charging status in the lock screen:
It takes around 5 hours to charge your tablet to full battery. Please only
use a 5V /2A adaptor included in the gift box to charge it.
IX .Firmware Upgrading Procedures
9.1 warnings before upgrading