I have a 2004 Swift Freestyle 590 Motorhome. I have gone through two leisure batteries in 3 years. I actually stay on sites that have EHU so rarely need the use of the battery apart from when travelling. I have had conflicting advice that when on hookup I should switch the control panel to leisure as this will keep the battery topped up, but also I have been told that this will completely drain the leisure battery and cause damage when on site for long period. Welcome advice on this. Also in winter is it a good idea to leave it on leisure with EHU for a long period. Just one more question, is it ok to connect up the leisure battery to a smart charger whilst the leisure battery is in situ or will this damage other things.