Thanks for replies. Update.
Contacted dealer. They could access AS Monitor and pointed out the date when the battery started to drop. Suggested a common reason is leaving TV booster on.
Now the embarrassing bit. Around that date I fitted a new TV bracket and tried it out. Yes, I’d left the booster on.
Though it’s a lithium battery it’s only 60AH. The battery is now holding its charge.
I’ve only had the van three weeks and plan to upgrade battery and solar panel when I return from Spain.
Contacted dealer. They could access AS Monitor and pointed out the date when the battery started to drop. Suggested a common reason is leaving TV booster on.
Now the embarrassing bit. Around that date I fitted a new TV bracket and tried it out. Yes, I’d left the booster on.
Though it’s a lithium battery it’s only 60AH. The battery is now holding its charge.
I’ve only had the van three weeks and plan to upgrade battery and solar panel when I return from Spain.