I guess I could turn it off at night.Maybe best to get a quieter one mate, not really anywhere in a small van where you won't hear it. Alternatively why not just turn it off when sleeping?
It's a brand new setup as part of a kit from xtremevan. The battery is fully charged and the unit is just running in its lowest mode of keeping the battery topped up.The fan comes on when the charger is working flat out after you have hammered the battery. I'd get a new charger as well, one without the fan.