Does having 2 batteries in parallel count as 1 Bank when looking for a new smart charger. I presently have 2 batteries in parallel for starboard starting and house (12 volts but double amps) And 1 battery by itself for Port Starting and Genny. All three are deep cycle 27 series. Just curious if a 2 bank smart charger will do the job. Will the charger treat the 2 in parallel as I bank. 1989 Sea Ray 340 Dancer.