We have recently bought a CI mizar, garage model. love the van wondered if anyone has had any problems with the webasto draining the leisure battery. We have 120W solar, but only an 110AH battery both new. Our battery is also located outside, anyone managed to fit a second. Like being off grid but need power for John's CPAP. Previous van smaller battery and solar lasted 4-5 nights. Have changed most of the lights to LED and dont use the others except when on hook up.