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| Ok, so I was too tight to get the 24volt, but I settled for a 12 volt trolling motor. I have two batteries and what I want to do, and I know that some of you have done this, is hook the two batteries up together so they are used in unison.
What I was thinking is just hook the motor up to one battery and then have battery cables connecting the pos and neg of the two batteries.
Would this work?
Are there any potential risks if I connect the two batteries?
I want to be able to spend as much time on the water as possible and not have to deal with a low battery part way through the day.
Thanks!
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| Hook your 24 volt positive to Battery 1, and your negative to battery 2. Connect the two batteries with a short wire. Battery 1 negative to Battery 2 positive.
If you need to run any 12 volt items off of the 24 volt system, just hook the 12 volt positive and negative to battery 2.
Hope this helps,
Scott |
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| If you are running the batteries for 12 volt, then simply hook pos to pos, and neg to neg. Draw your 12 volt off either battery. it will not be as efficient as a 24 volt system, but will give you more running time. Put a 25 amp in line fuse in the positive lead between batteries, too, as a precaution! |
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| Thanks! I will give it a try. Only 44 days to musky opener in MN! |
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| I have to admit, I was a bit lost on the first response.
Assuming you have a 12 volt trolling motor, you can run 2 12 volt batteries in parallel to get more time on the water. Here is what you need to do:
Get two leads. Hook the positive from battery 1 to the positive of battery 2, and hook the negative of battery 1 to the negative of battery 2. Take the positive lead from the trolling motor and hook to the positive on one of the batteries. Then take the negative lead and hook it to the negative post of the other battery. You are now set to increase time on the water.
If you are running a 24 volt trolling motor and using two 12 volt batteries, you need to run the batteries in series. to do so, again, take two leads. Connect the positve of battery 1 to the negative of battery 2. Then hook the positive of battery 2 to the negative of battery 1. Take the negative lead of the motor and hook to a negative post on one battery. then take the positive lead to the positive on the same battery. All set to go.
Steve |
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| VMS,
Sorry, but I have to disagree on the 24 volt setup. You only need one lead, from pos on Bat 1 to neg on Bat 2. If you put the second lead on, you'll melt it![:0] I'm sure this was just an oversight.
Tight lines,
Shep[:sun:] |
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| Shep,
With Series set-up, you are correct....my mistake If you happened to read my post before I edited, I misread yours. I am in full agreement with you on series....you only need one lead. Definitely an oversite on my part. Thanks pointing that out. Last thing I would want is for someone to chew me out for incorrect information.
Now...if it was someone I did not like...I might tell them to hook it as described. [:devil:] [:p]
Steve |
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| Captain!!!!!!!!!!!
Whadup Dog?! I used to run my 12 volt powerdrive on the Lund with 2 batteries in parallel. Works great! Definately increases your running time. 40 Days and counting!!!!! What were your plans for opener again? I forgot.
Finally sold the Lund this morning!!!!!!!!! Will pick up the Muskie Edition on Tuesday!
[:bigsmile:] [:bigsmile:] [:bigsmile:] |
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| I wrote a battery manuracturer about this and this is their reply:
If your trolling motor is 12 Volts nominal, then you can install as many 12 Volt parallel batteries as you like. Each parallel battery will add its capacity to your system. However you must observe the following rules:
1. Connect all positive terminals to each other. Likewise, connect all negative terminals to each other.
2. Make sure all of the batteries are the same brand, that they are same model /size and that they are the same age.
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| Anyone,
I am setting up a 24 volt system in my boat. I need to run new wire. What Guage wire should I get to do this. I have seen the wire get pretty hot in the post on my old 12 volt system.
Thanks very much,
Doc |
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| check your manual for your trolling motor,this should tell you what size you should need. you should never use smaller wire then what you are running.
happy hunting
duck |
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| Thanks Duck,
I bought it used don't have a manual. If you have an idea I would appreciate your educated opinion.
Thanks
Niel |
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| 10 guage is more than adequate for any 12 volt application. Some of the boats out there use 6 guage, but that is overkill. Anything from 6 to 10 will work nicely. Use inline fuses in the hot wires!![:bigsmile:] |
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| I'd run at least 8 ga. 6 ga. is better. The smaller the wire, the less current capacity it has. Run the bigger wire, and it will perform better. Also, get pretinned marine wire. It will resist corrosion much better. In-line fuses as recommended, or better yet, circuit breakers.
Tight lines,
Shep[:sun:] |
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| Are you fellas saying that if you run two batteries in parallel with a twelve volt motor that you will get more running time than using one, twelve volt battery at a time?
Also, I believe that I've read somewhere that it is ok to run them in parallel, but it is not ok to charge them in parallel if they are hooked together as you say. Is that true? |
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| Muskiekid- Yes, if you parallel the batteries you will get three times (3x) the single battery runtime. f. ex. If each battery has a reserve capacity of 180 minutes, you will get 540 minutes when you parallel them. I know you'd expect to simply add them together (180+180=360), but that's not the way the battery physic's work. So it's better to parallel them versus using each one individually.
Al Warner
www.spongebobbatteryphsics.com |
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| Lots of info on the battery hook up.
Here is some good standby info.
Batteries connected in "parallel" double your amperage while the voltage remains 12 volts.
Batteries connected in "series" double the voltage while the amperage remains the same.
If the batteries used are the same in crank amps and voltage the above is true.
I have ran demolition derbies for nine years and have always used two "egual" batteries hooked in series for starting the motor should it overheat and stall.
Should you need 24 volts to run your trolling motor and still only need 12 volts for your system ( lights, depth finder, etc, Than make sure you connect your systems power line to the "grounded" battery only.
In the demolition cars I ran the starter motor, only, on 24 volts.
Sworral is correct as 10 gauge is plenty heavy enough wire.
It's not so much as the smaller wire not have the capacity to carry the heavier voltage. The smaller wire creates more resistance to heavier voltage and will get very hot and a fire can be a problem.
!2 gauge wire would work ok but the further the electrical item ( trolling motor) is from the power source ( battery) the larger the wire should be. There are formulas to use but definetly the 10 gauge wire is heavy enough.
As far as triple the hours you can run, I don't know as I have never checked into it, but it sounds reasonable as you would have more power at hand.
[:p]
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| Ihave a charger on my boat is the hook up to the batties to charge them up the same |
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How do I hook up two batteries in parallel for tro