I've got a 24 volt trolling system. If I ever need to jump my cranking battery off should I decouple the two trolling batteries so I'm only jumping with 12v.
Printable View
I've got a 24 volt trolling system. If I ever need to jump my cranking battery off should I decouple the two trolling batteries so I'm only jumping with 12v.
Yes you should, you dont want to send 24v to a 12v starter
You wont send 24 to starter if you connect jumper cables to one battery.....so no...you do not have to remove the connector cable between the two batteries.
Sent from my SAMSUNG-SM-G891A using Tapatalk
Wrong, if they are coupled together + hooked to - any place you hook to is going to produce 24v you will have to uncouple them to get 12vQuote:
Originally Posted by "G"
You only get 24 volts when you connect to the negative on one battery and the positive on the second battery on two batteries connected in series.
Sent from my SAMSUNG-SM-G891A using Tapatalk
You are right, he is asking about jumping a connected 24volt in series battery to a 12v battery, if they are connected you are getting 24v until you disconnect, I had an old John Deere tractor with a 24volt system and John Deere said I couldnt connect to one battery and jump a 12v system.Quote:
Originally Posted by "G"
Sorry...your wrong...think about it....two 12 volt batteries in series....they are conected to each other with a jumper positive to negative....the 24 volts comes from the negative if the first battery and the positive of the second battery. You can connect jumper cables to pos and negative of one battery and it will be 12 volts....even with your jumper connector wire still between them. So you can jump off of either battery and get 12 volts. I am a retired mechanic and worked on 24 volt tractors and big trucks for over 30 years.
Sent from my SAMSUNG-SM-G891A using Tapatalk
So your telling me that I spent all that money on 24v lights when all I had to do was buy regular 12volt lights and only hook to one batteryQuote:
Originally Posted by "G"
Morgan.....the link you sent explains....two 12 volt batterys wired paralell pos to pos and neg to neg.....makes 12 volts....thats correct
Two 12 volt batterys wired in series make 24 volts.....but you can still jump and get 12 volts connecting jumper cables to one battery. I have done this many times.
Sent from my SAMSUNG-SM-G891A using Tapatalk
What did you put the lights on ?Quote:
Originally Posted by MorganT69
Sent from my SAMSUNG-SM-G891A using Tapatalk
John Deere 4020Quote:
Originally Posted by "G"
You may be right G but for piece of mind I would take them out of series and then jump, to much money to waste by hooking things up wrong but hey, its his boat if he wants to do it without doing that then thats on him, I would not.
A 12 volt light would burn on one battery yes.....but probably had to get the 24 volt lights due to the wireing and charging sytem on the tractor. Thats a whole different thing than jumping something off from one....i would have to see the tractor wireing diagram etc to really answer any question about your lights.
Sent from my SAMSUNG-SM-G891A using Tapatalk
Take a meter and check....you will see you do not have to disconnect anything. Maybe cray will chime in here in a minute. I keep jumper cables in my boat have done it many times. By the way...I am a ASE certified master tech.Quote:
Originally Posted by MorganT69
Sent from my SAMSUNG-SM-G891A using Tapatalk
"G" is 100% correct.
Yes he is.Quote:
Originally Posted by Barnacle Bill
theysaid G is correct !!!!! and if you think about a minute if you got a 2 bank charger in your boat and charging the batteries on the 24 volt trolling motor batteries you don't disconnect the batteries you put 1 bank on Bat A and the 2 bank to Bat B with them wired in series !!!!
Thanks guys.
I have used booster cables in the past, both to start my motor, and, more often to help others. I have never unhooked a series, and I have a 36 volt hookup. As long as you are using one battery to connect to, it's gonna only deliver 12 volts.
That would be correct.Quote:
Originally Posted by MorganT69
Sorry guys I'm late to the party. Was at my Daughters wedding rehearsal dinner and stupid done and forum runner wouldn't let me post. yES G is I tiredly correct in all his statements about jumping from a24 set up in our boats to a 12 volt cranking battery.
Yes, on your JD tractor it had a complete 24 volt wiring system. 24 volt starter, 24 volt Generator, 24 volt lighting everything wired 24. I think though he was incorrect if you had 2 12 volt batteries on the jumping part. Now you could have very well had a 24 volt battery, which were installed in some of the older tractors, dozers and other heavy equipment. There are a Miriam of ways of wiring some of that stuff up.Quote:
Originally Posted by MorganT69
Boatbottom, here is a fail safe easy way to wire up a jumping system for a rig like yours. Get you a piece of black and piece of red #4 battery cable 6 inches longer than from post on cranking battery to post on closest trolling battery. Install ring eyes on the ends of the cables. Lay them in the compartment. Then figure the most continent point for you to access that cable. Cut both cables right there. Install a ANDERSON plug on both ends. Then install cables to the proper post on each battery. Just use electrical tape to seal ends of plugs. You might just for safety sake use wire ties to tie them off from flopping around. Ready made jumper cable, always there when you need it. Also, if using this or any other jumper set up, your cranking battery is dead, hook up jumper, let sit for 5 minutes or so. That way it transferes enough juice to put a surface charge on cranking battery. Then after cranking do not immediately remove the jumper. Let I build a little. Alternator- charging system can be overloaded and bur out rectifier.
Good place to start
https://www.batterystuff.com/battery...ga4ringSB.html
Just put your volt meter on one battery and see if you don't get 12 volts.
X2! Kiss principalQuote:
Originally Posted by deltarat
G is right but still a guber
All that technical rigamarole means nothing to a dummy like me, but of this I am sure: less than 24 hours ago I jumped my cranking battery off of a 24 volt trolling motor system and didn't disconnect a thing. Nothing blew up, no sparks, no nothing. My engine fired right up and off I went!!
Sent from my iPhone using Tapatalk
Both 12 or 24 volt opinions made sense to me so I used my volt meter to try both ways and to my surprise it showed 12 volts both ways. I measured all three batteries and got 12 volts even when I tested the two trolling motor batteries hooked together. I tested the trolling motor power plug at the front of the boat and it showed 24 volts. I'm still scratching my head, but those were my results.
Its simple batteries in series 24 volts.....connecting to just one battery even if connected to another one is 12 volts. https://uploads.tapatalk-cdn.com/201...cc6306edcd.jpgQuote:
Originally Posted by spindle
Sent from my SAMSUNG-SM-G891A using Tapatalk
Yep