I purchased new leisure battery and quick release battery connectors today. Already have a leisure battery but as I just drive around my town - park up for half a day most of the time - the leisure battery I have is simply not being charged enough on the relay. So, as per caravan centre advice - if flow starts dropping - take that battery out of van and put on charge - replace with fully charged 2nd battery. Keep doing this in rotation. Quick release connectors are brilliant.