No, the mobile phone tablet has only one charging port, you force the use of this transfer cable is harmful to the battery, the mouse, keyboard if the exclusive signal line, the battery will not stop charging, the power display will not show the charging state, the battery will not stop overcharged.
Usually, yes
Even if you forget to charge, the keyboard can be used while charging, and the universal Type-C interface allows users to charge through a computer, charger or mobile power supply.