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replace 8 8 volt batteries for 50' Convertible w/ 8v92TI

  • Thread starter Thread starter MJK9999
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MJK9999

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  1. OWNER - I own a Hatteras Yacht
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50' CONV -Series II (1979 - 1983)
If possible I would like to hear from anyone familiar with replacing the Rolls or comparable large 8 volt battery banks on 50' sport fish. I have heard golf cart batteries can work, but are they not deep cycle? and not capable of starting the 92's? Any info, suggestions, view points etc will be much appreciated andf thanks in advance
 
The standard flooded 19", 8V battery is no longer made by any mfg.
They still make the flooded 23" battery. If 8 of these will fit, problem solved in a most cost reduced purchase.

Once your heart starts beating normally from that cost estimate and still want to spend more money on maybe better quality batteries, then just go with the Rolls.

On a warm day, I would think 700 CCA per starter would be a good spec to start shopping with.
 
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This post should be in the tech section but I used US. Batteries great service made in USA and a family owned company. They are made to compete with the Rolls only a lot less money and more available
 

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Captain Ralph said:
The standard flooded 19", 8V battery is no longer made by any mfg.
They still make the flooded 23" battery. If 8 of these will fit, problem solved in a most cost reduced purchase.

Once your heart starts beating normally from that cost estimate and still want to spend more money on maybe better quality batteries, then just go with the Rolls.

On a warm day, I would think 700 CCA per starter would be a good spec to start shopping with.
Click to expand...

The cost for eight 8v batteries is high enough that they should include a defibrillator at no extra charge.
 
jim rosenthal said:
The cost for eight 8v batteries is high enough that they should include a defibrillator at no extra charge.
Click to expand...

You get that when you cross the wires. Lol
 
I think Fisheries Supply sells the US Battery but they are branded DYNO. If I recall, the battery factory is just down the street from them.

Their M13 provides 1000CCA.
 
jim rosenthal said:
The cost for eight 8v batteries is high enough that they should include a defibrillator at no extra charge.
Click to expand...
SEVEN said:
You get that when you cross the wires. Lol
Click to expand...
You kids have been here before.

I usually start off numb (86 min proof) before I sign the credit card.
Then a pile of stuff from the wife for a while.

So far, my Frankenstein battery experiment (stage two) has been working. Some hick-ups but positive. More on this later when stage three is implemented later this year.
PM me if anybody wants any more details on these ideas.
 
Check my post in the Tech Talk Forum on Full River 8 V AGM batteries. I just did this on an LRC and did quite a bit of research.

I would recommend calling DC Batteries in Miami, they were a GREAT resource for me.
 
JD5652 said:
Check my post in the Tech Talk Forum on Full River 8 V AGM batteries. I just did this on an LRC and did quite a bit of research.

I would recommend calling DC Batteries in Miami, they were a GREAT resource for me.
Click to expand...

Do they have big flag terminals on them like the Rolls, US Battery, and Dyno? If not, you risk melting the terminals with the high amp loads of starting.
 
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Captain Ralph said:
That would be the 19" battery of choice for many.

Note that the ad states Special Order Only.
Must be an old ad, 19" batteries have not been made by anybody for a lil while now.

For fun, I just sent them a query note asking about availability. I'll update all if/when I get a reply.
Click to expand...

Its not old. They use a battery plant in Seattle. All sizes are special order. The plant makes them as you order them.
 
Does the Trojan web site have any CCA information available on this 8v AGM?
 
jim rosenthal said:
Does the Trojan web site have any CCA information available on this 8v AGM?
Click to expand...
I was looking over the weekend and could not find it. The only 8v AGM I’ve been able to find CCA specs on is the Full River brand and it was quite stout at 1150 CCA.



.
 
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jim rosenthal said:
Does the Trojan web site have any CCA information available on this 8v AGM?
Click to expand...

They do not, but many are using the 8v golf cart lead acid batteries (myself included) with success. I hate the fumes from lead acid batteries (like we need more help creating corrosion), so always want to go with agm's wherever possible.
 
This is very interesting
Anybody want to dig deeper into the original sized 19", 8v battery?

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[TD="width: 100%"] Jeremy Makin (Fisheries Supply Customer Service)

Feb 5, 2024, 1:33 PM PST
This special order battery is available. Lead time can be 2-3 weeks as they are built to order at the manufacturer. This is an 8 Volt DC battery and is not commonly used hence the special order status and longer lead time.

Jeremy
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[TD="width: 100%"] Ralph

Feb 3, 2024, 6:53 AM PST
Product Question; Is this 19" battery still available?
Thx
Ralph
https://www.cognitoforms.com/Fisher...NnLvZIONfPE8HXg_OqIcod8deYWvYGH68UNI_9NOClc$*
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I replaced mine with deka. I did Four one year and four the next to lessen the pain. At the end of last season one of the newer took a crap and drained the other three on the only weekend I was out of town. I was able to bring them all back but my season ended so I need to see how they held up over the winter. I always isolate each battery in both banks prior to storage.
 
Captain Ralph said:
This is very interesting
Anybody want to dig deeper into the original sized 19", 8v battery?

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[TD="width: 100%"] Jeremy Makin (Fisheries Supply Customer Service)

Feb 5, 2024, 1:33 PM PST
This special order battery is available. Lead time can be 2-3 weeks as they are built to order at the manufacturer. This is an 8 Volt DC battery and is not commonly used hence the special order status and longer lead time.

Jeremy
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[TD="width: 100%"] Ralph

Feb 3, 2024, 6:53 AM PST
Product Question; Is this 19" battery still available?
Thx
Ralph
https://www.cognitoforms.com/Fisher...NnLvZIONfPE8HXg_OqIcod8deYWvYGH68UNI_9NOClc$*
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Click to expand...
Ralph,
If you want to know about these Dyno Batteries, just call Fisheries. My buddy just did that and found a bunch of information about all of the 8v batteries that they have sourced. He is going to order a set of the longer M15's as those are the size of his Rolls. He found that they are made to order from the plant in Seattle. I don't know why everone wants to find out all of their information online. Many times it's just better to call and speak to someone.
 
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