Sucking or blowing is really in the eyes of the beerholder, ehem, beholder, no? I miss Megamaid. I really do.
A fan sucking air out of the battery box and ducting it away and outside seems best.
If it's just heat inside the box, you might get away with a passive convection set up that draws cool air in through a bottom vent (from the bilge?) and up through a top vent into a lazarrete.
A fan sucking air out of the battery box and ducting it away and outside seems best.
If it's just heat inside the box, you might get away with a passive convection set up that draws cool air in through a bottom vent (from the bilge?) and up through a top vent into a lazarrete.