Make sure the ReadySet is properly connected to Grid/ Mains charger (see pages 8-13, 16-17 of the User Manual)
Make sure the Grid/Mains power is on/available, then plug the Grid/Mains charger into a wall socket. Press the button on the ReadySet to start charging. If the ReadySet does not begin to charge, your Grid/Mains charger may be damaged and need replacement. Try charging with the solar panel. If solar charging does not work, the ReadySet may be damaged. Please contact Fenix customer support (via email to firstname.lastname@example.org or this website).