"Inductive light" is an inductive charge (similar to a smart phone or clock "cable-free" charger) light which "automatically" lights when removed from the charging base and "extinguishes" when it returns to the charging base.  The base unit contains an inductive transmitter and coil and a 12 mm diameter with 3 mm thick neodymium magnet.
The light unit contains an inductive receiver and coil, a lithium polymer battery, a lithium polymer battery, a 6 mm diameter with 2 mm thickness neodymium magnet, a normally open swivel switch and a flashing LED.
When the light assembly is removed from the base unit, the neodymium magnet in the light unit activates the reed switch and illuminates the LED. When the light unit is returned to the base unit, the neodymium magnet in the base unit changes the magnetic field of the neodymium magnet into the light assembly, which deactivates the reed switch and turns off the LED. Since the charging system utilizes air purge induction which is not as effective as cable charging, this lamp extinguishes the light when the light unit is returned to the base unit for charging.
I bought the inductive charging system from Adafruit which indicates the system will work from 9 to 1
Designed with Autodesk Fusion 360 and Meshmixer 3.5.474, sliced with Cura 4.1 and printed in Ultimaker PLA and CPE + filaments on an Ultimaker 2+ Extended and an Ultimaker 3 Extended.