So the new (to us) Globecar Campscout van has started exhibiting some strange electric behaviour. When it is hooked up to 240v the habitation batteries appear to be charging but only gets as far as 2 red lights lit on the panel - never progresses past that. Off EHU they run down faster than a fast thing even with 12v set to off. There are 2 habitation batteries. I noticed on the electrobox that there is a 20A fuse marked "extra battery charger". If I take this out then the first habitation battery appears to charge much better and go all the way up the light sequence. However, the satnav (which has it's own isolation switch) doesn't work at all with this fuse out. When I put the fuse back it the battery condition goes immediately back to the 2 red lights and that's your lot. I'm guessing that the additional habitation battery is duff. I will be taking it to someone who knows what they are doing (agreed with vendor that this is on guarantee) but for a quick fix - because I want to go and play with it in France - if I switch anything attached to the second battery across to the first battery does that sound like a good idea or a potential disaster? I'm pretty sure we'd be ok on 1 battery for now. Also, just to mention that there is a solar panel in the mix which shows as charging when off EHU but when on EHU shows battery full, load light on, charge light off which i'm assuming is normal? If nothing else I'm learning my way around this van .