Originally Posted by SteecanFotz
This might be a dumb question but if I'm plugged into shore power and have the 12v on am I wasting any battery power or am I getting all the power from the outlet?
No. When you are plugged into shore power you want to be sure that your inverter/charger/converter is turned on and that will allow your batteries being constantly charged.
Your converter is using the batteries as a filter so that your 12 volt system has a nice, noise free, flow of 12 volt power. Being plugged into shore power also allows you to use the 120 volt appliances like your microwave, air conditioner's, TVs and engine block heater.