Connect the dongle to StellaPro Light models: CL 1000 and CL 2000 or Sola FC 2L lights and connect it to any compatible USB-C Charging Cable for easy charging while traveling, allowing you to minimize the gear you pack. Dongle has built in firmware to manage charging to keep you safe. Charging cables must deliver 30 Watts and must comply with USB-C Power Delivery Specification v2.0 or later. The USB-C Power Delivery Specification requires USB-C power sources rated at 30 Watts and over have the capability of delivering 15VDC. This capability (15VDC output) is required in order to charge older SOLA/StellaPro 2-cell lights. Some power supplies (most notably older Apple 87W and 60W) do not comply with the USB-C standard and will not work with older generation SOLA/StellaPro 2-cell lights. New models of SOLA/StellaPro 2-cell lights allow charging at 20VDC and therefore will work with a larger set of these non-compliant power sources. When charging, a green light indicates the connected power supply is compatible with both newer and older SOLA lights. An amber light indicates it will only work with newer SOLA Lights. A red light indicates the connected power supply is not compatible.