[vadim77]

Hi.
I have a similar problem with 6gt g32 b58 August 2020.

Same noise nearby 48v battery and charging is interrupting and starting again.
I am using semi prof. Charger made in Russia with manual set up of Voltage and Ampers needed for charging.
After some trials I have found that if voltage set up as max 13,9 V there is no clicking and interrupt of charging happens. Amperage I set up around 2 or 3 Amp.
I could not physically check until what volume I could charge 12v battery.
But its not enough to charge by this method.
I was charging with open hood inside motor compartment. Car is open.
I shall revert after some trials and studying TIS.