While some are frightened by comments indicating that the battery drained even being off, be careful at this point: when the WiFi is active, it is ALSO when the camera is "off", to allow the restrike distance with the remote control or the Android application. This is logical! So to completely extinguish the GoPro if left unused, press the power button for 2 seconds for it to turn off normally, then cut wifi wifi 2s pressing button (blue light stops flashing). And then not charging problem, tested and verified.
I hesitated between silver and black, finally the use of the remote control is important, especially on MS # 53021 pole that incorporates an attachment for it.