hello there, im planning to acquire a Multiplus II 48/5000 to use it as a alternative source for some loads in my household when the grid is off - connected to set of batteries - without solar panels at the moment. one of the important load is the gas stove - modern gas stoves need nowadays a fixed polarity to work - does anyone know, if the multiplus im willing to buy offers the fixed polarity at the ac out (does not reverse the polarity at the ac out)- the one that delivers the power when grid is off?? apparently, not every inverter charger available on the market, can offer it - i want to be sure, Multi II does.