Motorhome starter battery woes
Hi all, I wonder if anyone can help with starter battery issues on my 2021 Roller Team T-Line 590.
The van has a Phantom Sentinel alarm and tracker fitted which I understand will take some power from the starter battery. As far as I know, there’s nothing else taking power from the starter battery (other than the vans internal systems).
The van is in storage at the mo so I can’t keep the van plugged into EHU.
I could see on the Phantom app that my starter battery voltage was discharging from 12.4v to 11.9v in about 2-weeks even with a 6w solar trickle charger connected. It’s had this charge/discharge cycle for 2.5 months.
So 2 weeks ago a dealer fitted a CSB2 for me and now my battery discharges from 12.4v to 11.9 in about a week! And it seems to be having no effect charging wise on the starter battery even though the leisure battery is reading 13.6v and we’ve had 5 days of bright sun!!!
Any ideas what’s going on? The van starts but is my starter battery just dead as it’s failing to hold charge? Perhaps the regular charge/discharge cycle has killed it - but it’s only 3 months old! Or could the CSB2 be faulty?
Many thanks for any thoughts!