Hi, thanks for your update. I’m not really that deep into the technical details, but what the technician explained to me is that the concept in the new T7 is fundamentally different from what it used to be. There is a separation relay, but it serves a different purpose now. The basic idea behind it is that – if the starter battery discharges for any reason – the leisure battery can step in and charge the starter battery.
That said, in my opinion, it really shouldn’t happen that if the camper’s leisure battery gets drained, the starter battery is automatically depleted as well. That could be a problem.
Alternatively, we might be thinking in the wrong direction entirely, and the issue might not be related to the connection between the two batteries at all. It could be that certain consumers aren’t shutting down properly and are draining the starter battery instead – for example Bluetooth, Wi-Fi, or some control units.
