IF you have an INVERTER/CHARGER, your battery disconnect does NOT disconnect the Inverter/charger. This type Inv/charger is wired direct to the Coach batteries. The amp draw(Inverting) is too large for the Battery Disconnect relay. If you have just a CONVERTER, it depends on the OEM and how they wired it. Some, if you turn the disconnect OFF, the coach batteries will NOT charge but the Converter will still supply your 12 volt electrical needs. Your only problem is, the batteries will be dead in 3 to 5 days. Most OEM's wire the CO and LP detectors direct to the coach batteries to prevent voltage spikes that can set them off, thus when the battery disconnect is OFF these type detectors will continue to drain the coach batteries. Not all do this but a lot do. Doug