PiPO S1 - Manual (Page 17)

１７
5, tab "Home" icon in the top left to return to the main interface,
select "SD card", Tab "Editor" icon, you will see a pop-up menu,
select "Paste".
Files are copied from your tablet to your Micro SD card now.
Ⅸ.... Battery Battery Battery 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 use
the 5V adaptor.