One of the most important but often forgotten areas of the Rimor is the living area battery compartment, which is found on the right side of the vehicle, just over the rear wheel, in the picture below marked with a red arrow:
The upper part of the compartment is not important for daily use. It contains the main electrical controller which is linked with a display-input-unit inside the living area (just over the entrance door) and a solar panel controller. You don´t need to touch it, it is all automatic and controlled from inside the living area.
The lower part of the compartment contains the battery (and a green switch, please see below). The battery can be any 12V lead-acid battery, best would be a sol-gel battery, but I am using a normal car battery with round pole contacts. The positive pole should be located on the right hand side, if you look at the front side of the battery (this is the side where the two poles are located).
If you need to replace it – usually because of deep-discharge – look carefully for the maximum size. The depth of the battery compartment limits the maximum length of the battery. I found that an 100Ah battery still fits inside, see the type label below:
Any battery works, not only solar batteries. I currently (04/2014) run a 90Ah normal car battery and everything works fine. You will need a Phillips screw driver and a 10/11mm open end spanner to replace the battery and it will take you 10 minutes time. Or you pay the mechanic who does it a tip of 5 Euros.
The most important issue with the battery is to not discharge the battery below 10V, which can easily be monitored on the control panel.
There is one more (not) important control element inside the living area battery compartment: the green grey water heater switch on the lower left side of the compartment, just a bit left of the positive pole of the battery.
It is intended to heat the grey waste water in the two grey water tanks, preventing them from freezing and thereby clogging during cold winter trips into a ski resort or similar.
If anything is obsolete in a camper van than it is this feature. Not only during cold times, one would leave the outlet valves of the grey water tanks always open. Usually the grey water only has some soap and it is completely fine to dispose it into the public rain water drains on a street. If you stand in green nature, it is on you to not poison your environment. I am using organic soap and all what I do do is washing some dishes and brushing my teeth. No danger if this grey water is let out into nature, even during winter times.
You should make sure that the waste water from the grey water tanks does not run to visible areas underneath the camper van because you either will attract attention from people walking by or – if the temperature is below 0 degrees C – you will slide on your own frozen grey water. If I am not too lazy, I put a little bucket underneath the two grey water outlet valves and I collect the water before I dispose it into the next rain gutter.