2nd battery discharging

[Ted Laskoe]

Hi All.
My New T7 Cali is having issues with the 2nd batteries discharging writhing a few days.
Nothing left on in the van.
The dealer has pulled it apart and VW tech have been involved but it’s still happening.
Anyone got any experience of this.
Help me before I have to reject it…..PLEASE!

 

[Canary]

Just commented on the other thread literally minutes ago about my experience with 2nd battery discharging, anyways exact issue you describe and it turned out to be faulty relay. Its been perfect since, hope you get it sorted fella

 

[Ted Laskoe]

Thank for your reply Canary.
I have owned this from new since September this year.
Main agent had it back for three weeks with VW technical involved and just got it back. It charges to 100% on the engine or EHU and then drops 10% every 12 hours or so. The dealer reckons that they have changed things but the problem is still here.
What really do you mean?