Electrical....

Gunni

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Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
AGM accept massive amounts of amperage in bulk charge phase, so if you have a high-output alternator, or a genset/high output shore charger you can greatly reduce you engine run times. With a proper charge system they don't gas-off and sputter sulfuric acid so they are safer to live with - giving you more options for locating them.

Before I switched to AGM I ran a set of FLA "trainer" batts to sort out my charging systems, monitoring and location configuration. Given the cost of AGM, you need to do it right.
 
Oct 26, 2008
6,432
Catalina 320 Barnegat, NJ
So 2 new batteries are maybe 0.5% of the purchase price? I have a hard time being convinced this should be an obstacle to an otherwise agreeable transaction. I agree that signs of neglect would be a red flag, and I still wonder about that "engine buss bar". But if the boat has been on the market (and not used) for a while and the batteries were found to be discharged, I wouldn't be inclined to run away in alarm. But my opinion is based on the assumption that there aren't any other red flags to speak of. Of course it ain't my money! :cool:
 

BarryL

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May 21, 2004
1,116
Jeanneau Sun Odyssey 409 Mt. Sinai, NY
Hey,
Some of you guys crack me up. You are gong to spend $100K on a boat and then argue over $200 worth of batteries? Would it be better if the current owner takes the AGMs off the boat and installs two brand new group 24 FL for $150? Now there are BRAND NEW batteries on the boat, so the selling price should go up! Of course that doesn't make any sense. You need to look at the entire boat and not get hung up on one little item.
Regarding the question about the instruments going off when the thruster was used, the problem is either ground connection OR power connection. Was the battery selector on 1, 2, or both? It should not matter if the engine is running. Thrusters are real high power users so if the wiring is suspect you will have strange behaviors.
Barry
 
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Gunni

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Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
Some of you guys crack me up. You are gong to spend $100K on a boat and then argue over $200 worth of batteries?
I think you missed the point Barry. A guy who is trying to sell his boat with dead batteries is going to have a hard time selling it as properly maintained, or explaining away other problems that kill a sale. I mean you jumped to the conclusion that there are wiring problems when the most likely source of the other electric problems (instruments shutting down) simply come back to dead batteries, not wiring. But yes, if he was looking after his boat for sale he would have pulled his dead batteries and replaced them so that electrical systems worked when inspected. This may in fact be the reason why the boat has remained unsold into the winter.
 
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Oct 26, 2008
6,432
Catalina 320 Barnegat, NJ
But yes, if he was looking after his boat for sale he would have pulled his dead batteries and replaced them so that electrical systems worked when inspected. This may in fact be the reason why the boat has remained unsold into the winter.
I'd agree with that ... it does seem odd that the Seller would ignore a simple housekeeping duty in the effort to sell a boat that I would assume to be north of $150,000. NYSail has been a member here for a long time and I assume he has a pretty good handle on issues to take seriously. I'm happy for him that he is stepping up to a boat he desires. I would assume, based on his interest, that the boat is in pretty good shape despite the batteries. :)
 
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NYSail

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Jan 6, 2006
3,178
Beneteau 423 Mt. Sinai, NY
The condition of the "ground buss on engine" does seem to raise a red flag. I can't even visualize what that would be. Shouldn't there just be one cable grounded to the engine as Ron indicated?
Yes../.. I meant ground buss for the engine. Mounted right next to with one wire going to engine.
 

NYSail

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Jan 6, 2006
3,178
Beneteau 423 Mt. Sinai, NY
Should have finished survey today. He did say they were old and that replacement was probably near. Boat has been professionally serviced, engine looks almost brand new. Rusty corroded ground buss is mounted on the wall under water pump and may have gotten wet from imellor changes. A few items of consern but overall boat is clean and well priced..... Even with old batteries. Winter storage with shrink wrap included in deal.
 
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NYSail

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Jan 6, 2006
3,178
Beneteau 423 Mt. Sinai, NY
Once again, this forum is great! I thank all for the input. Thr seller is not a hands on guy but has a wallet that pays to have things done. This was a side toy for him..... he lives about an hour away from water, has two young kids in sports, a wife that's just "ok" with sailing and used the boat maybe 4 times a year. The problem with the discharged batteries came from the fact that usually he has boat pulled and winterized by now. He summers the boat to the east then has a captain sail it to a yard for winter and service. So boat was in a temporary state and got overlooked. He has not been to boat since august.
As I said, besides batteries boat is clean and well maintained. Worth the price even if I have to buy new batteries.
With my limited amount of deep electrical knowledge just wanted to hear all opinions so that I could question what is told or not told to me..... once again thanks! Sure I'll have a few more in coming months.
 
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Oct 26, 2008
6,432
Catalina 320 Barnegat, NJ
Should have finished survey today. He did say they were old and that replacement was probably near. Boat has been professionally serviced, engine looks almost brand new. Rusty corroded ground buss is mounted on the wall under water pump and may have gotten wet from imellor changes. A few items of consern but overall boat is clean and well priced..... Even with old batteries. Winter storage with shrink wrap included in deal.
I figured the buss bar would be something that is a little more sophisticated than the simple ground connection on my small cruiser. So you have a few token "projects" to accomplish ... not exactly a "project boat". ;) Congratulations! I'm sure this will be an agonizingly long winter for you. :p I think that boat is a very attractive choice.
 

Gunni

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Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
A few items of consern but overall boat is clean and well priced.
Good to hear, the B423 is a nice sailboat. It is a big boat loaded with systems...make sure you get it winterized by a knowledgeable service tech.
 

NYSail

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Jan 6, 2006
3,178
Beneteau 423 Mt. Sinai, NY
I figured the buss bar would be something that is a little more sophisticated than the simple ground connection on my small cruiser. So you have a few token "projects" to accomplish ... not exactly a "project boat". ;) Congratulations! I'm sure this will be an agonizingly long winter for you. :p I think that boat is a very attractive choice.
Thanks! She is a pretty boat and perfect for cruising...... we are leaving it Connecticut over the winter and will take a few trips up to clean!
 

NYSail

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Jan 6, 2006
3,178
Beneteau 423 Mt. Sinai, NY
Good to hear, the B423 is a nice sailboat. It is a big boat loaded with systems...make sure you get it winterized by a knowledgeable service tech.
Yea it is a nice boat..... took it for a ride in the rain under power on tuesday...:. Those extra 5,000 pounds make a yuge difference! Taken care of by brewers in Westbrook. Pretty good yard but I will go and check it things before it gets too cold
 
May 24, 2004
7,213
CC 30 South Florida
Brokers usually have boats moved to their home base marina so that they can show them all at one location. It is usually the responsibility of the brokers to keep the boats clean and the batteries charged but some may be lax in their obligations. I would think the drop in voltage was due to partially discharged batteries rather than wiring problems. The surveyor likely indicated the batteries were OK as they accepted charge and were strong enough to crank the engine and operate the thruster but being used batteries sold "as is" he was not concerned about their condition and storage capacity. I have very limited experience with "thrusters" but have done some work with electric windlasses and came to realize that it takes a lot of copper to move the current from the batteries up to the bow of the boat. In many cases having a dedicated battery installed by the bow is the best solution.
 

NYSail

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Jan 6, 2006
3,178
Beneteau 423 Mt. Sinai, NY
The owner has been bringing her to this yard for the pat 4 years..... broker is not near by. Batteries read 1100cca each.... again my ignorance not sure what that actually means. He did say they were getting close to their time but not done.....
 

Gunni

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Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
Maine Sail details the process do a 20 hr load test which is how you assess house batteries, but just assume these are toast; when the broker starts flapping his gums about 'cca '