Leisure battery drain

[GUMY]

I charged my leisure battery using the EHU cable for 8 hours yesterday, after which the control panel showed 12.9V
Fully shut down, nothing using the battery, but today it's down to 12.6V
Does this suggest a problem, or am I just paranoid?
I have a CTEK charger which I would connect up to it, if only I could figure out how. If I slide the driver's seat fully forward, I can get at the + terminal, except that I can't see how (or if it's even possible) to remove the cover. Anyone got one like this and know?

 

[GUMY]

I stopped by at the dealer who I bought the van from today (Tottington Motor Company), and their technician very kindly sorted me out and put my mind at ease. He ran a battery test which meant nothing to me but apparently showed no problems:



He also removed the driver's seat in order to access the terminals (seems less than ideal) and connected a permanent cable to connect my CTEK charger in future

 

[CAB]

There is often a voltage drop at the control panel, i.e. it measures lower than at the battery.

What charges the battery when driving? If it is a Split Relay it may well activate if you charge the Starter battery. If I plug my CTEK into the dash 12v, it charges both, as the voltage sensing relay is activated.

Shame you didn't have a BM2 monitor, they could have stuck that on the battery as well.

 

[GUMY]

There is often a voltage drop at the control panel, i.e. it measures lower than at the battery.

The tech did say the control panel readings are probably not 100% accurate, so I will try not to obssess so much about it in the future!

What charges the battery when driving? If it is a Split Relay it may well activate if you charge the Starter battery. If I plug my CTEK into the dash 12v, it charges both, as the voltage sensing relay is activated.

Shame you didn't have a BM2 monitor, they could have stuck that on the battery as well.

I honestly have no idea - I only know it's a split charge system that charges the leisure battery when the engine is running.
If I had known what a BM2 monitor is (before Googling it just now!) I may well have had one, and had him fit it at the same time. We live and learn