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idiocrates Member
Joined: Nov 02, 2007 Posts: 437 Location: Seguin, Texas
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Posted: Wed Mar 07, 2012 11:47 am Post subject: An electrical question |
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Since this is probably going to be coming up next can someone answer a dumb question for me.......are these two ways of installing batteries in parallel electrically equivalent......or would one be advantageous over the other? To me....it seems the upper one would allow me to exit the batt box on opposite ends with larger cables as opposed to the lower one.
[img]
JEEP_BATT by idiocrates, on Flickr[/img] _________________ Jim
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RICKG Member
Joined: Aug 31, 2010 Posts: 1744 Location: SO IDAHO
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Posted: Wed Mar 07, 2012 1:33 pm Post subject: |
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Are you going parallel for 12v w/more amperage?
I dont have an opinion on which setup in the more
advantageous but i thought the batt disconnect
is more beneficial on the ground cable because when
shut off you eliminate any chance of sparking a batt. _________________ keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a |
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RickC Member
Joined: Apr 11, 2005 Posts: 174 Location: Coventry, RI
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Posted: Wed Mar 07, 2012 2:54 pm Post subject: |
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I was always taught to use the ground for the cut-off switch....... |
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OKCM38CDN Member
Joined: Feb 17, 2012 Posts: 530 Location: Del City, OK
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Posted: Wed Mar 07, 2012 5:40 pm Post subject: |
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Your connections are the same electrically... not difference...
Hope this helps... _________________ Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 201001205
Tornado Alley
Del City, OK |
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wesk Site Administrator
Joined: Apr 04, 2005 Posts: 16355 Location: Wisconsin
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Posted: Thu Mar 08, 2012 10:11 pm Post subject: |
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The only difference between the two illustrations is that one illustrates the connections with the wires on the top side of the illustration and the other on the bottom side. Electrically they are identicle.
Parallel connections are for connecting two batteries to put out what the single battery put out.
Series connections add the two batteries' voltages together to double the voltage of the single battery. _________________ Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100
Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php |
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idiocrates Member
Joined: Nov 02, 2007 Posts: 437 Location: Seguin, Texas
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Posted: Fri Mar 09, 2012 7:19 am Post subject: |
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Thanks for the replies. I agree....the disconnect in the ground lead is the better or perhaps I should say...the safer...approach. But I come from a background in telephony switching where our positive terminal is ground and our low voltage disconnect equipment is in our negative feed.....gues I shoulda paid a little more attention to detail. At any rate....I was a little concerned at first that the upper drawing would be more succeptible to opens in the battery circuit due to corrosion then the lower one but after looking at it more closely.....while the amp/hour capacity might get cut in half due to corrosion there is exactly the same potential for failure in the both diagrams. thererfore.....inasmuch as the upper drawing lets me exit the holes in the battery box with larger battery cables (since I will have only one cable in each hole on each end of the box) I'm gonna go with the upper scheme....and apply lots of No-Ox-Id. Thanks again. _________________ Jim
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jimm Member
Joined: Nov 01, 2011 Posts: 201 Location: Escondido, CA
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Posted: Fri Mar 09, 2012 6:18 pm Post subject: |
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Just curious: why the desire to run two batteries in parallel? Do you need that much amperage? To take advantage of the supply, you'll need some pretty hefty cables to deliver that much current. _________________ Jim McKim
1952 M38 son-father project
Slowly turning rusty parts into OD parts |
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idiocrates Member
Joined: Nov 02, 2007 Posts: 437 Location: Seguin, Texas
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Posted: Sat Mar 10, 2012 6:51 pm Post subject: |
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Well....its like this.....since the A1 has room for two batteries......and since mine has been converted to 12V.....instead of running two "paired" 6V batteries I figured I'd run two paralleled 12V batteries. The current won't be required.....but it might prove "nice" to have if I ever want to add a bunch of electrical equipment to the mix.....like lights.....a jukebox.....or maybe an inverter powered refrigerator. _________________ Jim
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