Hi. I am looking to buy a Victron Phienic Smart IP43 charger for my boat. It has a 12v 130Ah battery plus a 12v 100Ah battery - just regular type, not AGM or Lithium. These batteries go through a 0, 1, 2, 1+2 battery selector switch to feed the boat 12v system. One of these batteries feeds the starter motor. My first question is whether it will be okay for the charger outputs to be bridged by the switch in 1+2 mode in either the “1+1” charger choice or the “3” charger choice where I would use 2 of the outputs, and my second question is which of these choices (1+1 or 3) you would recommend? Or would I be better off buying two IP22 chargers, one for each battery, which would be cheaper than the IP43, and let them charge one battery each? Many thanks!
if i understand correctly you want to charge the starter batteries while they are connected in parallel ?
Yes - I generally use one as a starter, and one as a house bank. With the battery selector switch allowing them to be switched into parallel (the 1+2 setting), I am wondering how this will work for the charger as the outputs will be trying to drive to batteries independently, but they will effectively be switched into a parallel configuration quite often when in the marina