I'm not referring to the USB connector, but the 5Vdc 2-pin motorcycle mount.

Solved. I replaced the Garmin cable for the motorcycle mount.

Thanks Peobody.
After reading your post and looking at 'Rofar's post about reinforcing the back of the mount connector I tried that and - so far so good.
It seems it was the lack of sufficient pressure on the 5V pin contacts on the motorcycle mount.
And, I have the 'new connector' that was suppose ...

Thanks for the info. Yes, I have the new mount as shown in your photo.
However, the problem lies within the zumoXT charging circuit sensing.

Yes, I've covered all the obvious checks, different charging sources, connectors etc. it is a behaviour of the fully charged zumoXT.

My zumo XT, when using the motorcycle mount and battery fully charged, will cycle through "connected / not connected" every few seconds.
Anyone else experience this?
I am guessing when the battery is fully charged is draws very little or no charging current so the device thinks it is not connected ...