Go Back  The Hull Truth - Boating and Fishing Forum > BOATING FORUMS > The Boating Forum
Reload this Page >

Trolling motor, chargers, bridges??

Notices
The Boating Forum

Trolling motor, chargers, bridges??

Old 06-30-2019, 06:08 PM
  #1  
Admirals Club Admiral's Club Member
Thread Starter
 
Join Date: Jun 2019
Location: Tampa, FL
Posts: 26
Likes: 0
Received 40 Likes on 17 Posts
Default Trolling motor, chargers, bridges??

I just got my first boat, a Scout 251 XS... It's prewired for a TM so I've purchased an Ulterra 112lb w/ 72" pole (i'm aware of reliability issues but i've got one arm, I'll chance it.) I've been reading and searching here and am a bit confused... I know i'll need 3x12v deep cycle batteries... Where i'm a bit lost is what THEN. Instruction's i've read say use a 3 bank charger but then elsewhere people mention a Stealth or Trollbridge device.... Does this replace a 3 bank charger? Do you need both a 3 bank AND the other device? Thoughts?
Old 07-01-2019, 04:01 AM
  #2  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2018
Posts: 572
Received 117 Likes on 65 Posts
Default

You will want an AC 3 bank charger. This is what you'll plug in an outlet when you get home if you have 115/120v available at your dock/garage/home. Nearly all the on board chargers will charge and then switch to float mode avoiding overcharging. I personally have the Minn Kota 15 amp AC 5 amp per bank charger and so far it's great.

Then optional is a DC alternator charger. This will connect to your house or cranking battery and when it senses that battery is fully charge it will basically bypass charging that particular battery and will charge each TM battery. Main advantage to this is you will get a longer use of your TM- say you fish somewhere an hour, then run to another spot 10 mins away it will charge the batteries for you while you're changing locations. Also, they should prolong your TM batteries as you'll be less likely to go under 50% use (not guaranteed but in theory). I personally got the Minn Kota DC alternator 3 bank 10 amp per bank (30 amp total) for this purpose. It charges each bank separately vs the stealth or Yandina charge in parallel which I was not interested in.

If you have any other questions PM me, this was a learning experience for me as well.
Likes:
Old 07-01-2019, 06:17 AM
  #3  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Hattiesburg, MS
Posts: 5,151
Received 365 Likes on 215 Posts
Default

I have 7 batteries on my boat. They are all charged by one 3 bank charger.

The troll bridge is connected to my house battery. When the house batteries reach 13v the troll bridge kicks on and starts sending power to the trolling motor batteries. In other words you do not need two 3 bank chargers.
Old 07-01-2019, 06:20 AM
  #4  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2018
Posts: 572
Received 117 Likes on 65 Posts
Default

Originally Posted by keithelder View Post
I have 7 batteries on my boat. They are all charged by one 3 bank charger.

The troll bridge is connected to my house battery. When the house batteries reach 13v the troll bridge kicks on and starts sending power to the trolling motor batteries. In other words you do not need two 3 bank chargers.
So your troll bridge does ac and dc charging or is that their combiner option?
Old 07-01-2019, 06:25 AM
  #5  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Hattiesburg, MS
Posts: 5,151
Received 365 Likes on 215 Posts
Default

It hands it all. Don’t over think it. You put the yandina on a battery. When that battery gets to 13v, it turns on and starts sending power to the batteries it is hooked up to.

So it doesn’t matter if the battery it is on is being charged by a motor or a 3 bank charger. All it sees is voltage.
Old 07-01-2019, 07:17 AM
  #6  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2018
Posts: 572
Received 117 Likes on 65 Posts
Default

Originally Posted by keithelder View Post
It hands it all. Donít over think it. You put the yandina on a battery. When that battery gets to 13v, it turns on and starts sending power to the batteries it is hooked up to.

So it doesnít matter if the battery it is on is being charged by a motor or a 3 bank charger. All it sees is voltage.
Not over thinking it, sounds like you only have a DC charger. Do you plug yours in from a 115 v before using? Trying to help the OP understand his options/needs.
Old 07-01-2019, 08:51 AM
  #7  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Hattiesburg, MS
Posts: 5,151
Received 365 Likes on 215 Posts
Default

Originally Posted by Gasser44 View Post
Not over thinking it, sounds like you only have a DC charger. Do you plug yours in from a 115 v before using? Trying to help the OP understand his options/needs.
The boat has a 3 bank charger. It is kept plugged in all the time in storage. The 3 bank battery charger keeps the house and 2 crank batteries topped off. Once the house reaches 13v, the trolling motor batteries start charging with the Yandina.

When the motors are running, all 7 batteries are charged as well.

Old 07-01-2019, 09:19 AM
  #8  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2018
Posts: 572
Received 117 Likes on 65 Posts
Default

Originally Posted by keithelder View Post
The boat has a 3 bank charger. It is kept plugged in all the time in storage. The 3 bank battery charger keeps the house and 2 crank batteries topped off. Once the house reaches 13v, the trolling motor batteries start charging with the Yandina.

When the motors are running, all 7 batteries are charged as well.
Gotcha, that's nice- just not sure the long term effect of parallel charging lead acid batteries. Sure AGMs are probably great with that.
Old 07-01-2019, 09:27 AM
  #9  
Senior Member
 
Join Date: Nov 2015
Location: Jax FL
Posts: 2,743
Likes: 0
Received 784 Likes on 535 Posts
Default

Originally Posted by Gasser44 View Post
Gotcha, that's nice- just not sure the long term effect of parallel charging lead acid batteries. Sure AGMs are probably great with that.
I think when they say Alternator it means it charges one TM battery at a time once the house is topped off.

Same on the home AC charger.

Personally this is exactly what I would do. I'd add one caviote. My TM is not installed but I'm going to first try some smaller lithiums instead of the group 27 or 31's. I think since we'll be running engines all the time the smaller lithium quick charge rate will let me save money on batts and save a lot of weight. I have Motorcycles that I use these same lithiums so nothing lost if I have go with bigger batteries.
Old 07-01-2019, 09:29 AM
  #10  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Hattiesburg, MS
Posts: 5,151
Received 365 Likes on 215 Posts
Default

Originally Posted by Gasser44 View Post
Gotcha, that's nice- just not sure the long term effect of parallel charging lead acid batteries. Sure AGMs are probably great with that.
I'm tagging yandina so he can weigh in on how it charges.

Old 07-01-2019, 09:37 AM
  #11  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2018
Posts: 572
Received 117 Likes on 65 Posts
Default

Originally Posted by Jumpsummo View Post
I think when they say Alternator it means it charges one TM battery at a time once the house is topped off.

Same on the home AC charger.

Personally this is exactly what I would do. I'd add one caviote. My TM is not installed but I'm going to first try some smaller lithiums instead of the group 27 or 31's. I think since we'll be running engines all the time the smaller lithium quick charge rate will let me save money on batts and save a lot of weight. I have Motorcycles that I use these same lithiums so nothing lost if I have go with bigger batteries.
Yandina parallel charges all the TM batteries together, at least that's what they told me and looking at the wiring diagrams. Lithium boat batteries are around $500 each unless they've come down a lot.
Old 07-01-2019, 10:56 AM
  #12  
Senior Member
 
Join Date: Nov 2015
Location: Jax FL
Posts: 2,743
Likes: 0
Received 784 Likes on 535 Posts
Default

Think about it. They'd have to first change to 36 volts then break it out again. Not likely.

13.5 volts comes in. Charge is cycled ABCABC very fast. Looks like 12 to each one. 99% sure that's how alternators work.
Old 07-01-2019, 11:04 AM
  #13  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2018
Posts: 572
Received 117 Likes on 65 Posts
Default

Originally Posted by Jumpsummo View Post
Think about it. They'd have to first change to 36 volts then break it out again. Not likely.

13.5 volts comes in. Charge is cycled ABCABC very fast. Looks like 12 to each one. 99% sure that's how alternators work.
No, it's charging the 3 batteries as a one 12v battery as that's how parallel charging works. The batteries are used in series and charged in parallel as their website confirms.
https://www.yandina.com/troll36info.htm
Likes:
Old 07-01-2019, 11:49 AM
  #14  
Senior MemberCaptains Club Member
 
Join Date: Jul 2008
Location: Bahrain/Houma,LA
Posts: 281
Likes: 0
Received 31 Likes on 23 Posts
Default

I started out with the trollbridge. It does work as advertised, is small, and light. It does have a couple of drawbacks. It can not charge and run the trolling motor at the same time. You get one or the other. Also, the switching can be a little wonky. You can use the remote to switch to 36 volts in order to leave the engines running, since it switches based on voltage. However, if you turn the engines off while the trolling motor is in use, it will switch back to 12 volt mode. While this is not a huge deal, and can be easily put back into 36 volt mode with the remote, the Ulterra will not like this. It will cause you to have to reset the trim. Yandina does have a work around which requires running a wire to the unit and adding a switch. Once the switch is activated, it will stay in 36 volt mode no matter what.

I ended up replacing the trollbridge with the Minn Kota alternator. It is a 12/24/36 volt dc to dc charger. While it doesnt have the amp capacity of the Yandina, it does allow charging of the batteries while the trolling motor is in use. I have found, at least in my case, especially with the voltage sensitive Ulterra, this is a better arrangement. The Minn Kota unit is turned on and off through the engine ignition switch, so it pretty much install and forget.

Since you do have an Ulterra, take note and unplug the unit anytime you are charging your batteries with a shore power charger. I lost a control board on the trolling motor due to a shore power issue. The dock was putting out 277 volts rather than the normal 230. It ended up burning up my battery charger and the control board on my Ulterra.

My current setup is 2 starting batteries(1 per engine) and 1 house batteries in parallel with
Marinco Power Products Pro Installer Dual Bank Control Switch Marinco Power Products Pro Installer Dual Bank Control Switch
. The starting and house batteries are normal run in the isolated position and charged using a combiner 100 between each start battery and a house battery. The Minn Kota alternator is the fed off the house batteries once they have a sufficient charge. I use a Powermania M340V2 to charge the trolling motor batteries, and ProNautic 1240P to keep the starting and house batteries maintained. My setup is probably a little overkill, but it works for me. Once I leave the dock, everything is automatic and requires no input on my part. My boat is a 32ft with the batteries, Minn Kota alternator, and Powermania charger mounted in the bow. This is the main reason I decided to install 2 shore power chargers rather than 1.
Likes:
Old 07-01-2019, 11:55 AM
  #15  
Admirals Club Admiral's Club Member
 
Join Date: Jan 2018
Posts: 572
Received 117 Likes on 65 Posts
Default

Super happy to hear the MK alternator charger charges while using the TM, I just installed it and didn't realize that.
Old 07-01-2019, 01:16 PM
  #16  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Hattiesburg, MS
Posts: 5,151
Received 365 Likes on 215 Posts
Default

The stealth will charge while running as well.

I installed a switch on my yandina. Super simple now to switch it.
Old 07-01-2019, 04:56 PM
  #17  
Senior Member
 
Join Date: May 2012
Posts: 367
Received 80 Likes on 49 Posts
Default

Just to add my 2 cents, I have 5 batteries , start and house are fed by a Promariner 20 Prosport 2 bank. I have a Minn Kota Ulterra 36 volt ( 3 batteries ) that are fed by a Promariner Prosport 20 Plus 3 bank . These batteries are only charged when docked.
I have never had any problems with this setup. I also carry a Battery Tender jump starter just in case.
Old 07-01-2019, 07:59 PM
  #18  
Senior Member
 
Join Date: Nov 2015
Location: Jax FL
Posts: 2,743
Likes: 0
Received 784 Likes on 535 Posts
Default

Originally Posted by Gasser44 View Post
No, it's charging the 3 batteries as a one 12v battery as that's how parallel charging works. The batteries are used in series and charged in parallel as their website confirms.
https://www.yandina.com/troll36info.htm
Not on the ALTERNATOR. I wasn't talking about the troll bridge. It's not very useful since you can't charge and use the TM at the same time. There is only the marginal charging capability from dock to fishing grounds.
Old 07-02-2019, 06:26 AM
  #19  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Hattiesburg, MS
Posts: 5,151
Received 365 Likes on 215 Posts
Default

Originally Posted by Jumpsummo View Post
Not on the ALTERNATOR. I wasn't talking about the troll bridge. It's not very useful since you can't charge and use the TM at the same time. There is only the marginal charging capability from dock to fishing grounds.
You donít need to charge when you are using it. Thatís not a deal breaker by any stretch. There is so much usage in that 36v system you donít have to worry about it.
Old 07-02-2019, 06:28 AM
  #20  
Admirals Club Admiral's Club Member
 
Join Date: Jun 2011
Location: Hattiesburg, MS
Posts: 5,151
Received 365 Likes on 215 Posts
Default

Originally Posted by jdwaters View Post
Just to add my 2 cents, I have 5 batteries , start and house are fed by a Promariner 20 Prosport 2 bank. I have a Minn Kota Ulterra 36 volt ( 3 batteries ) that are fed by a Promariner Prosport 20 Plus 3 bank . These batteries are only charged when docked.
I have never had any problems with this setup. I also carry a Battery Tender jump starter just in case.
And you probably wonít. If you leave the dock with charged trolling motor batteries you canít use it all in one day.

When you have days on the water water like I just did where I put my boat in the water for 6 days straight and used the trolling motor every day for hours on end either inshore or offshore you wonít make it. Thatís the difference in having the Trollbridge or other device.

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.