It only happend once at a public charger. Took the car to a Renault dealer but they couldn't replicate it or find a fault and gave it back to me, after charging £60 for looking at it. It has been fine since.

In the Scottish Borders. I don't charge on 3 phase all that much and the one near me is now out of service (again), althoguh I did use one last night and it was fine.. I was hoping they would find something fixable as it will be a symptom of a problem coming my way further down the line.

Dealer had it for the whole day and couldn't find anything wrong with it. They checked it over and updated the software and gave it back. Advice was to wait and see..

@Jon@Smiths it was coming from the part the camera was pointing at in the clip. Got it booked into the dealer tomorrow to investigate. I have used that charger before without a problem and the noise went away after about 5 minutes. Hopefully the dealer can find the cause, intermittent problems are always difficult HH