mark4493 Posted December 5, 2014 Share Posted December 5, 2014 I have 2 batteries wired up through a battery switch. I added a third battery and attached it to one of the existing batteries. The batteries are connected in a way that it doubles the capacity while staying at a 12 volt system. To much surprise there was no onboard battery charger on the boat when I bought it. I plan on adding a 3 bank charger, but with the battery set up as it is, would it be better to use a 2 bank charger instead? Thanks Link to comment Share on other sites More sharing options...
jrpiasko Posted December 5, 2014 Share Posted December 5, 2014 Just so I understand you correctly I understand that you have 3-12volt batteries but rigged up in two separate 12 volts systems. If this is correct you should only need a 2 bank charger (connect one bank of the charger to each of the 12 volt systems). Link to comment Share on other sites More sharing options...
HONDAM Posted January 15, 2015 Share Posted January 15, 2015 You don't need a 3 bank although I would recommend one. The bank with 2 battery's will take twice as long to charge as the bank with one battery with a 2 bank charger. With a 3 bank charger they will all be charged at the same rate. Link to comment Share on other sites More sharing options...
mark4493 Posted January 19, 2015 Author Share Posted January 19, 2015 thanks for the information Link to comment Share on other sites More sharing options...
jimcr Posted January 19, 2015 Share Posted January 19, 2015 your system with the 2 batteries will only charge to the state of the worse battery. In other words if you have one weak battery and one strong , it will only charge to the state of the weak one. I hope I didn't confuse you. Link to comment Share on other sites More sharing options...
mark4493 Posted January 20, 2015 Author Share Posted January 20, 2015 no you did not and thanks Link to comment Share on other sites More sharing options...
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