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Yandina Trollbridge ACR

Old 12-23-2019, 09:38 AM
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Default Yandina Trollbridge ACR

Well, seems as if the Rhodan craze has struck...and now am seriously considering the 36V 72" or 84" model.

We have fished two boats that run that setup, and man is it sweet not to have to deal with the anchor. Even having a windlass presents certain issues, and in itself wont guarantee a good hook up.

Fortunately, I have a spare anchor locker at the front of the boat that will house three 12V batteries...but charging them could be an issue.

We keep our boat at the marina, so not always able to get by and plug in an onboard charger, however there will be times I can.

Soooo...I'm looking at ways to charge the three trolling motor batteries when underway from one or both of the Honda BF150's on my boat. This looks like the ideal ACR to use. https://www.yandina.com/troll36info.htm

I have been using Yandinas to charge the house battery from either motor, and now would like to replace one of them with this Trollbridge to keep the startboard start battery and the three trolling motor batteris charged. The port motor and house battery will stay on one of the existing Yandina 100 combiners..

Anyone able to vouch for this? I am confident with the company as the two 100's I own have worked flawlessly
Old 12-23-2019, 10:31 AM
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Nothing but good things to report about any of the Yandina products. They do what they are advertised to do.

Only issue is how much current you have available from the motor and how much time you have to recharge your batteries.

Low current output simply means it will take a while to recharge your batteries.
Old 12-23-2019, 12:12 PM
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Battery tender makes solar battery chargers you would need one 15 amp per battery. Maybe one hooked to your main battery would charge all the batteries.
Old 12-23-2019, 12:56 PM
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Originally Posted by critt77matt View Post
Battery tender makes solar battery chargers you would need one 15 amp per battery. Maybe one hooked to your main battery would charge all the batteries.
How did you come to the 15 amp per battery number?

Battery Tender makes solar chargers but are a long way from providing 15 amps. More like less than one amp. At best. On a sunny summer day.
Old 12-23-2019, 03:27 PM
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People I know who run the Yandina products have had nothing but good things to say about them. But you know that, you already have some of their products.

The only thing you should be aware of is I believe with the 36v Trollbridge you cannot run your engines and use the trolling motor at the same time.
Old 12-23-2019, 03:30 PM
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Thatís what battery tender told me when I called, 15 amp per battery. I had the 1.5 amp 4 bank ďtenderĒ and they told me I needed at least a 5 amp but 15 if I wanted to charge them overnight.

Troll bridge may not charge your batteries enough depending on alternator output. Say you run 1hr spot lock for 6 hours and run back 1hr, depending on how much juice you used batteries probably wonít be fully charged after 1hr of running so you still need some type of shore charger. Troll bridge might get you full charged if you run spot to spot for longer periods than you troll. Also would be very useful if you had zero access to shore power and were fishing multiple days.

from my reading alternators arenít built to ďchargeĒ batteries. Also most batteries should be charged a certain way that an alternator probably isnít going to accomplish.
Old 12-23-2019, 03:36 PM
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Originally Posted by DQM View Post
People I know who run the Yandina products have had nothing but good things to say about them. But you know that, you already have some of their products.

The only thing you should be aware of is I believe with the 36v Trollbridge you cannot run your engines and use the trolling motor at the same time.
15 watt thatís only 850ma
Old 12-23-2019, 03:37 PM
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I have the trollbridge 36 charging my rhodan batts. Power to the trollbridge comes from the 2 aux alternator outputs from 2 F150s which are connected to the house batt and the trollbridge. Works great. Yandina will answer the phone or return calls.


You can run the TM w/ engines running. It comes w/ a remote to do that or you can hardwire a switch to do the same, which I did.

Only time I plug the charger in is when I am away for months at a time.
Old 12-23-2019, 04:20 PM
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Originally Posted by NEBassMan View Post
I have the trollbridge 36 charging my rhodan batts. Power to the trollbridge comes from the 2 aux alternator outputs from 2 F150s which are connected to the house batt and the trollbridge. Works great. Yandina will answer the phone or return calls.


You can run the TM w/ engines running. It comes w/ a remote to do that or you can hardwire a switch to do the same, which I did.

Only time I plug the charger in is when I am away for months at a time.
Awesome...that's what I was looking for....I had a feeling someone here had done this...

I will get back with you after the holidays and before I make the purchase to pick your brain some.....thanks!
Old 12-23-2019, 04:42 PM
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Originally Posted by critt77matt View Post
That’s what battery tender told me when I called, 15 amp per battery. I had the 1.5 amp 4 bank “tender” and they told me I needed at least a 5 amp but 15 if I wanted to charge them overnight.

Troll bridge may not charge your batteries enough depending on alternator output. Say you run 1hr spot lock for 6 hours and run back 1hr, depending on how much juice you used batteries probably won’t be fully charged after 1hr of running so you still need some type of shore charger. Troll bridge might get you full charged if you run spot to spot for longer periods than you troll. Also would be very useful if you had zero access to shore power and were fishing multiple days.

from my reading alternators aren’t built to “charge” batteries. Also most batteries should be charged a certain way that an alternator probably isn’t going to accomplish.
You must have been reading rubbish on the innerweb.

That is one of the core purposes of a generator or alternator. To recharge a battery or batteries. All the generator/alternator knows to do, can do, is to provide electrical power. It matters not where that electrical power is going.

Billions of batteries every day are being charged by generators/alternators and both the generators/alternators and batteries are doing just fine. You probably have one in your car and/or truck that did just that today.
Old 12-24-2019, 02:56 PM
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Originally Posted by alloyboy View Post
You must have been reading rubbish on the innerweb.

That is one of the core purposes of a generator or alternator. To recharge a battery or batteries. All the generator/alternator knows to do, can do, is to provide electrical power. It matters not where that electrical power is going.

Billions of batteries every day are being charged by generators/alternators and both the generators/alternators and batteries are doing just fine. You probably have one in your car and/or truck that did just that today.
so if one uses 1/2 the capacity of group 31 batteries how long would it take the outboard alternator to charge them? Suzuki df 250 puts out 54 amps.
Old 12-24-2019, 03:46 PM
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Originally Posted by critt77matt View Post
so if one uses 1/2 the capacity of group 31 batteries how long would it take the outboard alternator to charge them? Suzuki df 250 puts out 54 amps.
Depends upon the amp hours.

Can we assume 100 amp hours as a round number for a typical group 31 battery? Half of that would be 50 amp hours. For three batteries that would be 3 X 50 or 150 amp hours.

If, repeat if, the DF250 can output 50 amps, and if, repeat if, the current flow rate to the batteries is 50 amps, it will take three hours to recharge the batteries.

Old 12-24-2019, 04:25 PM
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I generally only run 1hour, 2 at max. that is kinda why alternators arenít good chargers, they will not be run long enough to bring your batteries to a full charge.
What would be the best shore charger to pair with the troll bridge? You would need a big single bank that doesnít time out before all the batteries are full maybe someone makes or can program one. I am not sure.
For my application I thought it was more important to get a good shore charger like a duel pro. I generally only fish one day per week.

also if you get a single 36 volt lithium battery a troll bridge will not work.

Troll bridge is a great product from what I read, but it doesnít seem like most understand the limitations. Reading some post it sounds like troll bridge is a transformer 12v-36v but that is not the case. It puts the batteries in 12v mode to charge. I think they would work great on a charter boat that was run daily vs a weekend warrior like most of us.
Old 12-25-2019, 10:22 AM
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Originally Posted by critt77matt View Post
I generally only run 1hour, 2 at max. that is kinda why alternators arenít good chargers, they will not be run long enough to bring your batteries to a full charge.
What would be the best shore charger to pair with the troll bridge? You would need a big single bank that doesnít time out before all the batteries are full maybe someone makes or can program one. I am not sure.
For my application I thought it was more important to get a good shore charger like a duel pro. I generally only fish one day per week.

also if you get a single 36 volt lithium battery a troll bridge will not work.

Troll bridge is a great product from what I read, but it doesnít seem like most understand the limitations. Reading some post it sounds like troll bridge is a transformer 12v-36v but that is not the case. It puts the batteries in 12v mode to charge. I think they would work great on a charter boat that was run daily vs a weekend warrior like most of us.
Most any 12 volt charger will work. A Battery Tender for instance. 0.8 amp up to 5 amp. Of course more amps are better, but only up to a point.

It is just a matter of time. Time that it will take to recharge the batteries which is a function of several variables.

What are the Trollbridge limitations of which you speak?
Old 12-25-2019, 09:13 PM
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It depends on your expectation. I mounted the troll bridge on my 25 Seavee. I customized a 84” motorguide. I have twin 150 merc 4s. The trolling motor will draw way more the the tb can keep up. Ended selling the boat and now have a 31 Yellowfin with the Rhodan with two 36v lithium’s in parallel. We rarely run out of juice and they come with an on board charger. It seems the lithium’s can take a charge a lot faster than traditional.

Mike
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Old 12-26-2019, 05:35 AM
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I'm just trying to get past the cost of the $3k 84" Rhodan....and just dont have another $2400 for a 36V litium setup, more less two of them!

Our runs out are almost always an hour and more, so will have some charge time and am hoping to leave the dock with three group 27 batteries fully charged for the Rhodan. l Idle the Hondas a lot when drifting so will have a little more charge time...if I can get 5-6 hours out of the three b atteries I would be good.....
Old 12-27-2019, 12:40 AM
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You should be fine, but I don’t think the Trollbridge will give you much benefit, except recovery charges will be less time, if your going back to back days fishing. I had 3 group 27 and as long as the current wasn’t too strong it would last 4-5 hours.

there are some Chinese lithium batteries I’m looking at too, about half price.
Old 12-29-2019, 10:06 AM
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Originally Posted by triumphrick;[url=tel:13214667
13214667]I'm just trying to get past the cost of the $3k 84" Rhodan....and just dont have another $2400 for a 36V litium setup, more less two of them!

Our runs out are almost always an hour and more, so will have some charge time and am hoping to leave the dock with three group 27 batteries fully charged for the Rhodan. l Idle the Hondas a lot when drifting so will have a little more charge time...if I can get 5-6 hours out of the three b atteries I would be good.....
Rick, Iím a little south of you and our runs are prob similar, ie: 1+ hour out & back with some putting around. Like I said above, Iíve not had a need to plug in shore charging yet.

Why grp 27 instead of 31? Cost is close, 31s have around 15% more capacity than 27s and the tray/box for a 27 always seem to also fit the 31. Assume we are talking about AGMs.
Old 12-29-2019, 11:28 AM
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Well, the last few days have proved to be pretty interesting...as Rhodan gave me a link to the Lithium Battery store and I really feel their 12V 54A batteries are going to cut it for me.

I finally got into the area that I was going to store the batteries yesterday...., and there is no way that I can get three group 27 batteries in there...I have one group 34 AGM that I tried, and it barely fits, even three of them will not have enough capacity. Also it is way up in the bow, in an auxillary anchor locker....and the thought of that much weight on the bow concerns me.

A 54 AH Lithium has the same A/H power as a 180 A/H AGM or wet cell. It is the perfect size and all three will fit, and each weighs 20 lbs. The life expectancy of the Lithiums is more than twice that as the AGM...and the cost will be about twice....so all in all it is costing me about the same. For the same price I have also found that Dakota Lithium sells a very comparable battery. And as this technology improves, who is to say the price of these wont drop some more? I always felt if they were to get down around $400-$500 I would consider them...and that is what I have found.

For now, this seems to be the path I will take. Also, I am checking to see if the Trollbridge will work on these batteries. If not, shore power will charge them and they will last more than a long day on the water with no charge from the motors. Also, one of the batteries I am looking at comes with it's own shore power charger.

So, as they say, the plot thickens...

Edit, the Dakota battery is discounted in a group of 3, down to $449 each....

Last edited by triumphrick; 12-29-2019 at 12:29 PM.
Old 12-29-2019, 07:49 PM
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Your 54 AH Li has the same approx usable AH as a grp 31 AGM. As you noted the weight of the Li is less, volume is less, and cost is more. Iím used to seeing a 3x cost increase for the same usable AH.

Li batts need a diff charge voltage than flooded tho. Talk to the batt manuf but I suspect youíll need to used a battery to battery charger, eg, sterling, between the alternator and batts. Correction: btween the alternator and yandina combiner.

Another good thing about Li is they have a high and constant charge acceptance rate compared to flooded. Upshot is a faster charger compared to to flooded. However, if they are depleted, they can put a significant load on your alternator. The B-to-B charger will almost certainly provide a means to limit the current drawn from the alternators.

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