I have had a 630l for 2 years now. Parked it out front of the house in October with no discernible battery problems (i.e. we'd been away and had plenty of power). It's been on hookup since with all electrics turned off, except for the odd occasion when I've gone in, turned lights on, then off, come out again. Now, 4 months later, the internal lights when used on the leisure battery are very dim. Am assuming that means the battery needs replacing unless anyone can suggest otherwise (does the leisure battery only charge if you configure the electrical control panel in a certain way - i.e. select "leisure battery" via the 3 position rocker switch on the extreme left instead of "electrics off" or "vehicle battery")? How can I check the battery independantly (i.e. to ensure it's not a faulty relay or some other electrical problem that is not battery related)? Thanks for looking.