To charge your Z12 hoverboard, first ensure that you have plugged your charger into a working wall outlet, so that the light on the charger will illuminate green/blue. Next, plug the other end of the charger into the charging port on your hoverboard. When connected, the charging light will illuminate red and turn green/blue once the charging is complete. Be sure to charge your hoverboard for up to 3 hours or until light changes from red to green/blue and no longer. Overcharging or undercharging will affect your battery and is not covered under warranty.