Battery on Go 520 wifi

The holder receives electricity in the car. This comes out of nowhere. The holder connected to the PC also has no effect. Reset was successful. Device switches itself off. I have not been able to find a description for this problem ... who can help me with this? Thanks
Comments
Superuser
To try and understand the full situation could you answer the following please.
It is possible to charge a GO520 using some phone chargers. For example the Iphone 3 pin phone charger which has a USB socket in it can be used and so is worth trying that with the Cable plugged into the Socket on the back of the GO520. Does it charge up if you try that.
Doug
Superusers
@pansa
Welcome to the site.... By 'Holder' ??? I think you mean the Mount supplied by Tomtom....
The USB Cable supplied by Tomtom, plugs into the bottom of the Mount... The power adapter plugs into the Cars 12 volt Power Socket....
Stay Safe... ATB YFM
I will now look for that Iphone 3 cable ... thank you so far
Superuser
I mean the cable you see in the picture in @YamFazMan's post which was supplied by Tomtom. Instead of inserting into the mount plug the end into the socket on the back of the GO unit. If this then works then the mount is suspect. If the Cable is attached to an Apple or similar plug and it works then maybe the Cig Plug in the above post is suspect.
Doug