Jump to content
  • GUESTS

    If You  want access  to member only forums on FM, You will need to Sign-in or  Sign-Up now .

    This box will disappear once you are signed in as a member.

  • 0

Wiring 12V Parallel


Guest

Question

Hey All-
Great board you have going here!! Maybe someone out there can offer some advice. I'm wiring up a 12V 55# MinnKota this weekend on our boat. I purchased two new Trojan Batts, and plan on running them in parallel to remain at 12V but add some run time. My question is about the on-board charger. We're running a 2 bank, 10 amp model from BPS. What is the most logical way to hook it up to my setup?? We're currently running one bank to the TM batt and the other to the starting batt. Can I hook up both banks to the TM batts in parallel without disconnecting the jumpers between them?? I assume that by hooking one bank up to a TM batt, it will "see" the parallel batts as one big 12V, but may take a long time to recharge both at 5amps??

Opinions/suggestions please!!

Thanks

chico

Link to comment
Share on other sites

6 answers to this question

Recommended Posts

  • 0

You will need to disconnect the jumper between the batteries. You could leave it on when you charge but that is only if your batteries discharge at the same rate, if they don't then on will be overcharged prior to the second coming to full charge. You might want to put a QD between the batteries, use the charger on the two trollers. And buy a 11/2amp for the starting batt.

Rob

Link to comment
Share on other sites

  • 0

Like Rob said with ac chargers they will not charge the batteries correctly more then one battery at a time. you should wire both banks to trolling motor. do you really need to charge running battery?

------------------
JIM PAYNE

Link to comment
Share on other sites

  • 0

Batteries can be viewed as buckets of water. If you have two buckets of water tied together, the may discharge at different rates. But you can charge them in parallel, because the lower battery or bucket will fill until matches the level of the other. After they have leveled off they charge at the same rate until completed.

Link to comment
Share on other sites

  • 0

I currently use 2 12V batteries for my trolling motor setup and I use a single 2amp auto charger connected to one of the batteries. It takes about 24 to 30 hours to get to full charge. I would think that a 5 amp should drop this time substantially and how often are your batteries going to be fully discharged?

Do you really need to charge them faster than 15 to 20 hours??

Grabs is right about the water thing......both batteries will discharge and charge at the same rate. Because they are connected, if one discharges a little faster, the other will put energy back into it until they are at equal charge. They will always, by definition, have the same measured amp draw when connected in parallel.

Link to comment
Share on other sites

  • 0

Ok guys-
I'm going to try running one bank thru the TM batts. The charger is supposed to have full power transfer- meaning it will put the amps to the batt that is less charged. If the engine batt is full, it will maintain it, but turn the rest of the power to the less-charged one: more than likely the TM's. Hopefully it works as advertised! The time thing really only becomes a factor when we're fishing somewhere for all week. I would think that 8 hours of charge time should be OK with 10 amps total- most of which will be going to the TM batts. Would it be wise to charge thru the end batt of the parallel or the one the TM is hooked to?

Sorry for all the questions guys- just want my investment to last a little while, you know?

Thanks again for your time...

chico

Link to comment
Share on other sites

  • 0

It makes no difference which of the two batteries you connect the charger to. Pick the one that is most convenient.

Link to comment
Share on other sites

Guest
This topic is now closed to further replies.


  • Your Responses - Share & Have Fun :)

    • kaparzo
      We fished Thursday - Saturday. Couldn’t get any marks to bite on the west end so started east. Caught lots of 9-15” eyes on the mud side of the transition. Mostly crawlers for us on Thurs-Fri but bite changed to minnows on Saturday. Our rainbows ran small but had a few big chubs mixed in. Big chubs we’re best. No eyes on small suckers.  A jig and sucker or crawler on 9-14’ rocks got smallies going in several places. Rocky points coming off islands also produced smallies with tubes, deep jerkbaits and ned rigs on east end. Also landed a 45” ski on a crawler harness. 
    • MarcoGrune
      Hello. Another important factor to consider when looking for an writing service is the amount of work they can do. A company like https://payforwriting.com/pay-for-papers/  offers a wide variety of topics and has over sixteen writers who are experts in the subject matter. The service also offers proofreading and editing services. Prices start at , but they can get expensive quickly if deadlines are tight. 
    • VitalikPaliy
      Hello. The first step is to read reviews written by customers. This way, you can determine if a service delivers on time and does not charge hidden fees. The paperwriter reviews should also state whether or not the company guarantees original work. Some of the most reliable review platforms include Trustpilot and SiteJabber. Moreover, many  writing services publish their customer reviews on their websites, some even in video format.
    • MarcoGrune
      Hello. Remember, cheap writing services will not pass a plagiarism scan and lack quality.  When looking for an college papers writers , you can look for online reviews that compare several companies. Those reviews should include both positive and negative feedback from customers. The service you choose should also provide timely delivery and no hidden fees. Additionally, it should guarantee that every paper is original. This way, you can be sure that you are getting a high-quality written by a competent writer.
    • MarcoGrune
      HelloHello. Another great option for students looking for a quality writing service, college paper is a legitimate company with a reputation of providing exceptional quality papers. This website has been in business for seven years, and it has a rating of stars. The service offers a loyalty program and provides discounts to existing customers. 
    • monstermoose78
      It was a perfect day for a walk with the dogs. 
    • Dan85
      Sounds like a fun day Moose. The weather was just about perfect for the days event. 
    • Larson333
      I also don’t really believe that you can earn online casinos. There you can play, put bets, win and more often lose money. In the casino for Norway, the same rules apply as for the rest of the casino. If you are lucky, you will win. But to earn money, it is unlikely.
    • monstermoose78
      Went duck hunting at my dads house I missed the only duck in range. The we went grouse hunting and we put 6 miles walking in and flushed two grouse and a woodcock. 
    • leech~~
      Beat yea!   Different lake though.  👍    
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.