Getting the boat ready for summer.I installed the battries yesterday,one optima blue top starting/deep cycle,one red top starting.I measure 14 volts at the alternator and 13.2 at the batts.I do have an isolator installed and I know a voltage drop is normal.But is 13.2 enough.After I'm out for the day I put my vector auto charger on them but I would like to see my dash voltmeter read a little higher while out ot the water.On a related issue the boats ammeter is always showing a discharge even when the motors running and there are no accesories being used.