12v vs 24v trolling power

[CrappiePappy]

Thanks CP

Thanks for asking, Fishervet ... I would never have known about the "blue wire" setup, had I not researched the 12V parallel charging setup to answer your question. I may go this same route, myself, as my MK220 onboard charger puts out 10a per lead (2 leads). I would have thought that simply hooking up one neg lead to the neg post of one battery & the positive lead to the positive post of the other would have been the correct way to go. Looks like I would have been incorrect in my assumption. Now I know better !! And it may not just be good info for the two of us, as there may be others that can benefit from this.

... cp

[fishervet]

Amazon.com: MinnKota MKR-19 Circuit Breaker 60A Waterproof: Sports & Outdoors

Will this work?

[dfar]

Amazon.com: MinnKota MKR-19 Circuit Breaker 60A Waterproof: Sports & Outdoors

Will this work?

That will work great. I agree with Crappie Pappy on the charger hook up and yes the two bank charger will work fine, it will just take longer to charge the twin batteries is all.

[fishervet]

That will work great. I agree with Crappie Pappy on the charger hook up and yes the two bank charger will work fine, it will just take longer to charge the twin batteries is all.

Learned a lot from this thread. Thanks guys.

[elkhunter]

24v is the way to go. I have a 65 lb Minn Kota PowerDrive V2 and forgot to plug in the onboard charger after trolling all day. Still had enough juice left to troll the whole next day. My boat is a Crestliner 1750 Fish Hawk.

[minnowtime]

Can I use one 12v charger on two batteries in SERIES? If so how? I have a minn kota double 12v onboard charger would like to use it for the 2 batteries in series plus boat starting battery. Time required to charge is not a problem for me. would like to run 12v anchor off the two batteries that are tied in series. Just changed to 24volt trolling motor.

[fishervet]

Can I use one 12v charger on two batteries in SERIES? If so how? I have a minn kota double 12v onboard charger would like to use it for the 2 batteries in series plus boat starting battery. Time required to charge is not a problem for me. would like to run 12v anchor off the two batteries that are tied in series. Just changed to 24volt trolling motor.

[CrappiePappy]

Can I use one 12v charger on two batteries in SERIES? If so how? I have a minn kota double 12v onboard charger would like to use it for the 2 batteries in series plus boat starting battery. Time required to charge is not a problem for me. would like to run 12v anchor off the two batteries that are tied in series. Just changed to 24volt trolling motor.

I don't think I'd run a 12V anchor motor off a 24V battery system. You'd probably burn something up

And everything I've read says you have to "unhook" the two 12V batteries from each other and charge them separately if using one 12V charger. And all the schematics I've seen show a 24V charger hooked up to two 12V batteries in series.

... cp

[jigloser]

thank yall, appreciate all the info. will probably go with the 24v

[Gabepeeps]

Didn't know about wiring in parallel that negative should come from one batt and possibly from the other. Will change that around tomorrow.