Got friends with a 2012 Autotrail Apache632 which doe'snt get much use!Told them to run it regulary!I always take my motorhome for a blast every week or two.Anyway every time they go to use it the batterys are flat! 4 weeks ago I got a call for help as no power at all.I took my meter round and found that the vehicle battery had nothing at all so we took it out and he took it to our local battery man(warwick battery's)He confirmed that it had it!so he came back with a new battery which I fitted.Yesterday got a call no power at all in the camper!Hooked up to the mains and the leisure side came on.Control and my meter showed about 2 volts on vehicle battery so put charger on overnight and now 12.7volts.but can't figure out why both battery's were flat.nothing appears to be left on.Only drain should be the alarm.I always switch my leisure side off on the control panel when we not using the van and I have suggested he should do the same but that shouldn't effect the vehicle battery!Any suggestions?He and his wife have just been away on their narrow boat and had a flat battery!!I asked if he managed to get a push start!!