Very odd, when I checked and posted my last reply they were still advertised as available, now they're not.
I've sent a message to the supplier to ask if they're still available, lets see when they come back with. I'll let you know.
I imagine you can get a bar mounted voltmeter/USB connector but not with that particular connector.
The connector will be fine for a week or two a bit of ACF50... GT85 or WD40 sprayed into it would help.