Reply
 
Thread Tools Search this Thread Display Modes
 
Old 02-21-2018, 10:06 AM   #1
Senior Member
 
City: Marion, Massachusetts
Country: United States
Vessel Name: Wanderer
Vessel Model: Pilgrim 40
Join Date: Sep 2016
Posts: 164
Right battery fastener material?

OK, I have lead posts with iron studs and copper wire with copper terminals. Or some of the terminals are tinned something from WM.

What is the preferred nut washer material/combination?

Copper washers yes, but copper nuts? Seems they might not stand up to torque. How about silicone bronze?

And what specific combos are bad?

Right now I have a stainless lock washer and a stainless nut.
__________________
Advertisement

PMF1984 is online now   Reply With Quote
Old 02-21-2018, 10:57 AM   #2
Senior Member
 
City: Washington
Country: US
Join Date: Nov 2017
Posts: 467
What you have now is what I have and is pretty common. I doubt your battery has iron studs though.
__________________

aboatman is offline   Reply With Quote
Old 02-21-2018, 11:03 AM   #3
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Country: Bumpkin?
Join Date: Oct 2007
Posts: 10,844
Greetings,
Mr. PMF. What you're using is pretty well what I've been using for 20 years or so with no apparent problems. I use SS washers and SS wing nuts (snugged down with pliers). I think what is more important is to keep the connections tight and corrosion free. As Mr. a. inferred, I'm thinking steel or SS studs not iron.
__________________
RTF
RT Firefly is offline   Reply With Quote
Old 02-21-2018, 11:41 AM   #4
Guru
 
Comodave's Avatar
 
City: Au Gres, MI
Country: US
Vessel Name: Never Say Never
Vessel Model: President 41 DC
Join Date: Jul 2015
Posts: 2,120
I used nylock S/S nuts on the studs so they won’t loosen up. All washers must be on top of any wires just beneath the nut.
Comodave is offline   Reply With Quote
Old 02-21-2018, 11:49 AM   #5
Senior Member
 
City: Marion, Massachusetts
Country: United States
Vessel Name: Wanderer
Vessel Model: Pilgrim 40
Join Date: Sep 2016
Posts: 164
Yes, steel, not iron.
PMF1984 is online now   Reply With Quote
Old 02-21-2018, 03:17 PM   #6
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 17,389
staonless has a bad rep for conductivity...although never a problem in my world.

Stainless is OK as long as the wire lug is in full contact with the battery terminal., just dont put stainless between them.
psneeld is online now   Reply With Quote
Old 02-21-2018, 08:16 PM   #7
Guru
 
kchace's Avatar
 
City: Brookline, NH
Country: USA
Vessel Name: Blue Heaven
Vessel Model: Albin 43 classic double cabin, twin 135 Lehmans
Join Date: Sep 2013
Posts: 1,020
Quote:
Originally Posted by psneeld View Post
staonless has a bad rep for conductivity...although never a problem in my world.

Stainless is OK as long as the wire lug is in full contact with the battery terminal., just dont put stainless between them.
This:

Stainless isn't a very good conductor but the wire end should be directly against the battery terminal with nothing in between. If there is more than one wire they should all be in direct contact with each other. Top with a washer and a nylock nut. The washer and nut material don't really matter because they aren't really part of the circuit.

Ken
kchace is offline   Reply With Quote
Old 02-21-2018, 10:28 PM   #8
Guru
 
C lectric's Avatar
 
City: B.C.
Country: Canada
Vessel Name: Island Pride
Vessel Model: Palmer sedan 32'
Join Date: Oct 2007
Posts: 2,118
There is nothing wrong with a regular steel bolt, but plated, and the same for the washers.

For blade type battery terminals use the CORRECT size of wire eye to match the terminal hole.

Do not put washers between the wire eye and the battery terminal. A good join depends upon the solid direct connection between the wire eye and the terminal.

Same for the round battery terminals.

Washers belong only under the nut itself.

And NO WINGNUTS.

FOr both use of a silicone grease or I like Nev R Seez both of which will exclude oxygen from the joint prolonging the time between cleanings by years. Don't need gobs of it and any excess will get pushed out leaving a metal to metal contact. Just clean up the squeeze out.
C lectric is offline   Reply With Quote
Old 02-22-2018, 07:15 AM   #9
TF Site Team
 
Larry M's Avatar
 
City: JAX, FL
Country: USA
Vessel Name: Hobo
Vessel Model: Krogen 42-120
Join Date: Nov 2008
Posts: 6,571
Make sure the nut on the battery holding the ring lugs is torqued correctly. You can easily damage the battery. Trojan, as an example, lists all their torque values on their web site.

http://www.trojanbattery.com/pdf/WP_...Guide_0512.pdf
Larry M is offline   Reply With Quote
Old 02-22-2018, 09:56 AM   #10
Guru
 
koliver's Avatar
 
City: Saltspring Island
Country: BC, canada
Vessel Name: Retreat
Vessel Model: C&L 44
Join Date: Nov 2007
Posts: 2,550
It is also important to ensure there is no possibility of movement of the battery within its box, as that will put mechanical stress on the connection, flexing into the cables, terminal connectors, connections to the battery, loosening over time and potentially allowing dergrading of the connection itself, sparking, etc.
Wooden wedges are OK if clearances are slight, proper bracing if clearances allow over 1" of movement.
__________________
Keith
koliver is offline   Reply With Quote
Old 02-22-2018, 10:09 AM   #11
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,833
I don’t know why so many marine batteries come with wing nuts. My preferred fasteners are bronze nuts, washers and lock washers. Easy to find at any good marine store and have a high copper content. I must admit I’ve also used stainless and not really seen a difference.
__________________
Parks Masterson
www.hopkins-carter.com
HopCar is offline   Reply With Quote
Old 02-22-2018, 10:12 AM   #12
Guru
 
dhmeissner's Avatar
 
City: Port Townsend
Country: North America
Vessel Name: The Promise
Vessel Model: Roughwater 35
Join Date: Sep 2012
Posts: 1,536
https://marinehowto.com/battery-melt...rowly-averted/

https://marinehowto.com/marine-wire-termination/
__________________
Dave & Suzie - Roughwater 35
http://thepromiserwb1029.org/2012/09...the-promise-2/
dhmeissner is offline   Reply With Quote
Old 02-22-2018, 10:54 AM   #13
Guru
 
Xsbank's Avatar
 
City: Pender Harbour, BC
Country: Canada
Vessel Name: Gwaii Haanas
Vessel Model: Vancouver Shipyards Custom Aluminum 52
Join Date: Sep 2013
Posts: 2,850
Never seize is not a good idea on a conductor of any sort, it is conductive and can migrate and cause a short which can cause all sorts of mayhem.
__________________
Don't believe everything that you think.
Xsbank is offline   Reply With Quote
Old 02-22-2018, 02:22 PM   #14
TJM
Senior Member
 
City: Essex, Ct.
Country: USA
Vessel Name: Harmony
Vessel Model: 1982 41' President
Join Date: May 2013
Posts: 118
The GURU is correct. You do not want a conductive grease on a conductor.
Dielectric grease is best. Eliminates corrosion, most "corrosion" is electrical in nature. Whether it is galvanic or straight path.
I am glad nobody has mentioned WD-40, lol
__________________
Tom
"Harmony"
1982 41' President
TJM is offline   Reply With Quote
Old 02-22-2018, 04:39 PM   #15
Senior Member
 
City: Washington
Country: US
Join Date: Nov 2017
Posts: 467
I wouldn't be putting dielectric grease between the battery terminals and the battery posts. We want the best conductivity possible here.

Putting dielectric grease on after the connection has been made is fine but the various sprays made for protecting battery terminals are easier and more thorough.

The wing nuts that came with your battery should be discarded and replaced with hex nuts.
aboatman is offline   Reply With Quote
Old 02-22-2018, 09:48 PM   #16
Senior Member
 
mike66's Avatar
 
City: Warwick, RI
Country: USA
Vessel Name: Susan Helena
Vessel Model: Albin40
Join Date: Oct 2014
Posts: 220
http://www.crcindustries.com/product...-oz-05046.html
Works great. And definitely nothing wrong with stainless nut and washer, as long as they're tight.
mike66 is offline   Reply With Quote
Old 02-23-2018, 05:47 AM   #17
FF
Guru
 
FF's Avatar
 
Join Date: Oct 2007
Posts: 17,567
The highest terminal torque mentioned by Trojan was 180 INCH pounds .

Not a problem for copper nuts or washers.
FF is offline   Reply With Quote
Old 02-23-2018, 06:17 AM   #18
Guru
 
psneeld's Avatar
 
City: Avalon, NJ
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 17,389
Right frpm the Permatex web site on Silicon Dielectric Grease use with battery terminals.

For connectors and battery terminals
1. Make sure the ignition system is off.
2. Clean surfaces with appropriate cleaner such as
Permatex Brake and Parts Cleaner or Battery Cleaner.
3. Coat both parts with grease.
4. Reassemble.

https://www.permatex.com/tech-docume...?doc_num=81150
psneeld is online now   Reply With Quote
Old 02-23-2018, 06:48 AM   #19
Senior Member
 
mike66's Avatar
 
City: Warwick, RI
Country: USA
Vessel Name: Susan Helena
Vessel Model: Albin40
Join Date: Oct 2014
Posts: 220
Practical difference between copper and stainless in the thickness involved is nil. Time to focus on real problems. And don't forget to fuse those positive cables.
mike66 is offline   Reply With Quote
Old 02-23-2018, 07:56 AM   #20
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Country: Bumpkin?
Join Date: Oct 2007
Posts: 10,844
Greetings,
Torque values are all well and good to know but who has a torque wrench graduated in inch/pounds handy? Rightly or wrongly, I simply snug-up my SS wing nuts, gently with pliers. Since my battery boxes are relatively accessible, I regularly check electrolyte levels and corrosion conditions. No problems in the last 20 years...But you never know. As Mr. 66 says..." Time to focus on real problems."
__________________

__________________
RTF
RT Firefly is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 07:45 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012