Making your own battery cables

rbryant1492_mfb

Petty Officer 2nd Class
Joined
Jun 11, 2007
Messages
128
I need new battery cables for my chrysler 60 hp. The lenght thats on the boat now I cant seem to be able to find so I was thinking about making my own. When I was at the store Academy sporting Goods I saw a guy buying the battery cable wire that they sell by the foot. He was telling the guy he wanted to move his battery.

So here is my question is it hard to make battery cables. The lugs on the ends seem really heavy so I was wondering do u crimp or solder them on?
 

Silvertip

Supreme Mariner
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Sep 22, 2003
Messages
28,771
Re: Making your own battery cables

Battery cables do not have to be the "exact" same length as the originals. I would suspect that you will end up spending more on the parts and the crimper than buying ready made. Cable ends can be crimped and/or soldered.
 

rbryant1492_mfb

Petty Officer 2nd Class
Joined
Jun 11, 2007
Messages
128
Re: Making your own battery cables

When i was looking online I cant find a cable long enough that comes from the outboard iinto the boat I need about 6 plus feet the way it snakes. the lobgest cable i seen so far is 4 feet
 

rost495

Petty Officer 2nd Class
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Jul 10, 2005
Messages
109
Re: Making your own battery cables

Most auto supply places I've been too, have the connectors and crimping ability. I'm gonna follow that up with solder since its so easy to solder and helps the connection a lot. Finish with liquid tape and then heat shrink...

Jeff
 

Scaaty

Vice Admiral
Joined
May 31, 2004
Messages
5,180
Re: Making your own battery cables

AutoZone...8GA...think 8ft $6...or West Marine..$35-45 for 4 foot (idiots)...or get a 12 foot set of 8GA jumpers cables for less that $20, crimp on the end pieces...simple
 

drewpster

Commander
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Oct 17, 2006
Messages
2,059
Re: Making your own battery cables

I have a cable supply house here that will make up whatever cables I need. You may have the same in your town.
Making up cables is not difficult however I recommend using marine grade cable. There is a proper way to do it.
The trick is to get a good crimp without over crimping and to seal the connection using high quality heat shrink tubing. I have crimped the connections alone, soldered them, and crimped/soldered them. Nowadays I only crimp. Crimpers for larger battery cables are expensive so don't buy one. I made mine used a cheap pair of bolt cutters from Harbor Freight. I have used them for years on my projects as well as at work without a problem. I found this pic of a pair made by a guy who had the same idea,

http://i136.photobucket.com/albums/q187/drewpster/cable20crimpers.jpg
 
Last edited:

G-Daddy

Petty Officer 2nd Class
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May 3, 2002
Messages
197
Re: Making your own battery cables

I made mine using Ancor Marine Boat Cable in 4 ga. I soldered the ends and used heat shrink tubing. So far they have held up well - it's now 6 years.
 

cthru1

Seaman Apprentice
Joined
Jan 21, 2005
Messages
30
Re: Making your own battery cables

go to any west marine store and make your own right there!
 

burroak

Senior Chief Petty Officer
Joined
Mar 29, 2007
Messages
651
Re: Making your own battery cables

If you want to make your battery cables, soldering is within the skills set of the boat owner.

Determine the size and length of the cables, slide shrink tubing onto the cable away from the terminal end, strip the insulation away from the wire enough to allow full insertion into the lug. Run a bolt through the lug hole and tighten it down - this becomes the support base. Place the lug and bolt on a non-flammable surface, heat and fill with rosin solder. While it is molten push the cable wire into the lug and let the solder quench. Clean up the wire and lug, let cool, and slide the shrink tubing and seal it. I use liquid electrical tape in the joint before applying the shrink tubing for added corrosion protection.
 

cjames

Petty Officer 3rd Class
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Mar 23, 2007
Messages
83
Re: Making your own battery cables

A crimp connection is the proper way to do it. Any marine supply store has MARINE grade cable, and the correct crimp on ends. Normally they have a crimper you can use for no extra charge. I doubt you will even be able to find a solder type conector in a marine supply store due to all the bad things that can happen to a solder joint in a marine application. ABYC standards state that crimp connections should be used instead of soldering.
 

burroak

Senior Chief Petty Officer
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Mar 29, 2007
Messages
651
Re: Making your own battery cables

A crimp connection is the proper way to do it. Any marine supply store has MARINE grade cable, and the correct crimp on ends. Normally they have a crimper you can use for no extra charge. I doubt you will even be able to find a solder type conector in a marine supply store due to all the bad things that can happen to a solder joint in a marine application. ABYC standards state that crimp connections should be used instead of soldering.

What ARE the bad things that can happen with a properly soldered lug?

I went to the ABYC website and could not access the information which you cite without purchasing the document. Suffice it to say, a solid, integrated crimping system of cable, lug and crimper will give you a superior connection, if solder is not present. As far as I know marine grade wire, which is really military and industrial spec'd wire, is all solder shielded. To make a perfect connection, the strands have to be in a hardened state as well as the lug. Any break in the contact between the two surfaces to crimped will lead to a potential, theoretical failure - static heating. However, this is when the circuit is used constantly with a heavy load.

In the world of all things perfect, there would not be a need for this forum, since we would all own state of the art equipment and have the most highly trained and experienced technicians working on our stuff, but most of us are just trying to get along and enjoy "MacGyvering" stuff.

If you can get battery cable made up by a vendor, by all means, do so. But I suspect the decision of a soldered vs crimped joint is pretty far down on the list of faux pas in operating a lot of the boats owned by posters here.
 

klicknative

Petty Officer 3rd Class
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Aug 9, 2006
Messages
96
Re: Making your own battery cables

I have a NAPA crimping tool. They are in the welding section of the store. It's not a "leverage" type tool, you put it on a solid serface and give it a couple of whacks with a fair sized hammer. I use a 24oz. ball peen.
 

drewpster

Commander
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Oct 17, 2006
Messages
2,059
Re: Making your own battery cables

I love these debates, so here I go.
In "The Marine Electrical and Electronics Bible by John C. Payne" The writer does not recommend using solder to terminate a cable end for two reasons.
The first is that solder can wick (travel) up the conductor causing stiffness and fatigue fracturing. The second is that solder can prevent proper contact within the connector. (a bad joint)
Later in the text he states that solder reinforcement can be used after proper crimping. :rolleyes:
Frankly I think it is apples and oranges. I have redone a soldered joint because too much solder wicked up the cable. I have also had to redo a crimped connection because the end pulled off while I was connecting it. There are also times when one method or the other may be required because of the circumstances. (crimping a connector rather than soldering because the area is too confined to use heat for example) My point is this; crimp the end on in a way that there is good contact between the connector and cable and seal the connection as best as possible. Pull on the connector to make sure it wont come off. (10 inch/lb. pull test as we call it ;) ) Use quality connectors and cable and good heat shrink. I never use pep auto boys zone cabling in my boat. And heat shrink without an adhesive liner is the best way to trap water in the joint. I have had to repair many connections because of it.
 

Big Keepers

Petty Officer 1st Class
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May 13, 2007
Messages
293
Re: Making your own battery cables

FYI it is not recommended to solder the battery cables. They lose flexability and are more prone to snapping at the crimp if they start to rust. Go to West Marine and by Ancor battery cable and lugs for the cable. It'll be a one time investment that will last a long time. Crimp the lug and heat shrink it too. Best way to figure on the length is to measure as best as possible the path the cable will follow and add a foot or two.
 

burroak

Senior Chief Petty Officer
Joined
Mar 29, 2007
Messages
651
Re: Making your own battery cables

In an attempt to add more light than heat to the crimp vs solder conversation I am submitting information at www.groundfusion.com/faq.php for your consideration.

For those that are in the crimp camp, you will find that crimping in and of itself is not the answer. In the information you will see that just squeezing a terminal and wire together is not 'good crimping practice'. If poorly done, it is much less satisfactory than soldering. The wire stripper, bolt cutter, cold chisel and hammer, or even a bona fide crimping tool does not insure a proper connection. But because it is 'crimped' a false sense of security is created because everyone 'knows' that crimping is better than soldering.

The downside to soldering a connection such as mentioned in this thread is for the most part in the realm of the 'theoretical'. Static heating and amalgam stratification presents itself on a molecular level under heavy load and continuous use, of which our cranking systems are excluded.

Although I solder these types of connections for myself, seal with liquid electrical tape, and shrink tube, I am not recommending it. But, for those who flatly state that a crimp is superior and don't know why or how to produce that superior connection you are as dangerous as the persons you castigate for soldering connections.

In the GroundFusion info, it should be noted that an acceptable crimp can only be obtained using non-tinned wire. As far as I know all marine grade wire is tinned, which makes for an unacceptable crimped connection.

Long story short, understand the process and do what you are comfortable with and your abilities allow you to do. It's you boat and your backside out on the water.:D
 

Big Keepers

Petty Officer 1st Class
Joined
May 13, 2007
Messages
293
Re: Making your own battery cables

Being that I'm big on trying to follow ABYC standards whenever possible, here is an excerpt from E-11 the ABYC standards for AC and DC electrical systems on boats.

11.16.3.6

Twist on connectors i.e., wire nuts, shall not be used.

11.16.3.7

Solder shall not be the sole means of mechanical connection in any circuit. If soldered, the connection shall be so located or supported as to minimize flexing of the conductor where the solder changes the flexible conductor into a solid conductor.

Exception: Battery lugs with a solder contact length of not less than 1.5 times the diameter of the conductor.

Note: When a stranded conductor is soldered, the soldered portion of the conductor becomes a solid strand conductor, and flexing can cause the conductor to break at the end of the solder joint unless adequate additional support is provided.


11.16.3.8

Solderless crimp on connectors shall be attached with the type of crimping tools designed for the connector used, and that will produce a connection meeting the requirements of E-11 16.3.3.
16.3.3 basically says that any connection you make depending on wire size and connection type, must meet a tensile strength requirement and not break before one minute has elapsed.

That is the straight poop from the ABYC.
 

burroak

Senior Chief Petty Officer
Joined
Mar 29, 2007
Messages
651
Re: Making your own battery cables

Big Keepers,

Just what method do you use to measure the tensile strength of a connection?
 

tommays

Admiral
Joined
Jul 4, 2004
Messages
6,768
Re: Making your own battery cables

soldered is and issue only because it does take SKILL

The ABYC stuff is done so allmost anybody with the correct tool can make a safe connection

If you do a battery cable correctly it will not wick far enough up the cable to cause it to become a problem


Tommays
 
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