I would like to ask photography enthusiasts: This is a flash synchronizer for a SLR camera. Can it be used only after it is fully charged?

Isn’t this the Godox flash trigger that I also use? . .

There is another half, the complete one looks like this

The one you are holding is inserted into the camera hot shoe

There are also Half of it has two wires. The smaller end is plugged into the flash, and the larger end is connected to the power supply. Use a three-hole power cord like this