Just back from 3 weeks away and my Skoda Superb was dead
I managed to get in with the emergency key and opened the bonnet, and after calling the AA, the AA man started it and I drove it down the road as recommended in sport mode thinking it was charging the 12 volt battery. However I got back switched off and back on and it was dead again. The AA man said to call Skoda Assist who arrived and did the same check but put his jump leads on the 12volt battery in the back left side that was down to 8 volts and left it there for a while to bing the voltage up, this worked and I hope I have enough to start in the morning.
What I wold like to understand is why the battery was so low when there is a 400volt battery that is at 80% to keep it topped up.