Your LIGHTYEAR charges through its micro USB port only.
To charge your LIGHTYEAR we recommend using a 5V / 1000-2000mA USB charger and the supplied cable. The charging time should not exceed 5 hours.
Remember that, if during charging, the screen is on or you are using it intensively, this time could increase.
You can get more information about how to charge your tablet in the section Power, charge and battery