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Mikeabn
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Joined: Mar 21, 2015
Posts: 29
Location: Barrington, Illinois
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 Posted: Fri Sep 30, 2016 7:16 am Post subject: Battery Tender |
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I am getting ready to put the jeep away for winter and want to put a battery tender on it. It is 24V. Do I need to disconnect the batteries from each other and use two tenders or can one be attached to Positive of one and Negative of the secnd battery and "tend" to both of them?
Thanks
Mike DeLapp |
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RICKG
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Joined: Aug 31, 2010
Posts: 1744
Location: SO IDAHO
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| Posted: Fri Sep 30, 2016 7:32 am Post subject: |
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24V tender takin care of business,
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keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a |
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Hawkshadow
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Joined: Oct 10, 2012
Posts: 310
Location: Toronto, Ontario, Canada
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| Posted: Fri Sep 30, 2016 12:22 pm Post subject: |
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X2 with Rick, I use the Bosch C7. It also has a winter setting.
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Jordan
M38 CDN
52-30718 |
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DFoley
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Joined: May 05, 2005
Posts: 109
Location: Del Rio, Texas
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| Posted: Tue Mar 21, 2017 7:52 pm Post subject: |
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Rick...I love this idea. I have the same charger but have it wired to the two batteries. I don't know why I didn't think of this, the outlet is staring me in the face. One question though, what size are the connectors you attached to your charger cable and where did you get them?
Later,
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Dan
1951 M38 |
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RICKG
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Posts: 1744
Location: SO IDAHO
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| Posted: Wed Mar 22, 2017 7:37 am Post subject: |
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I used 5/16 OD copper tubing, ran the leads thru, bent over and soldered, finished with shrink tube of the appropriate color. This set-up has served 4 winters now with no problem.
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RICKG MC 51986 DOD 01-52, '50 CJ3a |
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whydahdvr
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Joined: Jul 18, 2008
Posts: 645
Location: Melrose, MA and Santa Fe, NM
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| Posted: Thu Mar 23, 2017 8:48 am Post subject: |
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What about attaching the charging point for the batteries on the Jeep?
Is that called a slave cable like with modern military 24V? I've been interested in that set-up potentially, though for now I just disconnect the battery cable and charge each one separately if needed.
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North Shore, MA
Santa Fe, NM
1942 GPW
1952 M38
1964 Apollo 5000 GT
De Opresso Liber |
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wesk
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Joined: Apr 04, 2005
Posts: 16371
Location: Wisconsin
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| Posted: Thu Mar 23, 2017 11:20 am Post subject: |
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whydahdriver,
not sure what you are asking.
The jeep shown in Rick's illustrations has the slave receptacle and rick is attaching his charger to that receptacle.
I would suggest the simplist connection is a permanent one to the aft/cowl box battery positive terminal and the ground lug at the frame regulator plate or right front engine mount using the rubber plug that comes with most of these trickle/maintainer chargers.
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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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4x4M38
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Joined: May 30, 2014
Posts: 3465
Location: Texas Hill Country
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whydahdvr
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Joined: Jul 18, 2008
Posts: 645
Location: Melrose, MA and Santa Fe, NM
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| Posted: Thu Mar 23, 2017 6:16 pm Post subject: |
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Thanks Wes, I was asking about the receptacle he has those two leads plugged into - but the rest of the information was very helpful too.
Thanks!
-Josh
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North Shore, MA
Santa Fe, NM
1942 GPW
1952 M38
1964 Apollo 5000 GT
De Opresso Liber |
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wesk
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Joined: Apr 04, 2005
Posts: 16371
Location: Wisconsin
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| Posted: Thu Mar 23, 2017 9:58 pm Post subject: |
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This way is the simplist because you leave the pigtail connected forever.
No unscrewing that PITA cap on the slave connector.
No dropping that cap over and over again and scratching your paint.
No setting chargers on the fender and tripping over the cord and scratching your paint.
No PITA threading the cap on each time you wish to drive the jeep.
And if you are using a 24V maintainer you still only use a single pair of wires but this time you don't have to remove them when you take it for a drive.
If you really want convenience mount the charger itself under the cowl out of site and route the AC power cord to the glove box and just plug the extension cord to it when you park the jeep.
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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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wesk
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Joined: Apr 04, 2005
Posts: 16371
Location: Wisconsin
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| Posted: Thu Mar 23, 2017 10:05 pm Post subject: |
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| Quote: | Just to understand. You are saying your simplest solution is for folks
without the slave receptacle and cables installed, correct? |
No, I said my solution is simpler than Ricks weather you have a slave receptacle or not.
I had a slave receptacle on my M38A1 in the 80's and on my M37 & M38 now and screwing those caps off every time I park it is a real PITA.
It does not get any simpler than this. Just less then 2 seconds to push these two rubber connectors together.
And if you forget to unhook them before you go driving they just pull themselves apart!
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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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4x4M38
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Posts: 3465
Location: Texas Hill Country
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RICKG
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Joined: Aug 31, 2010
Posts: 1744
Location: SO IDAHO
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| Posted: Fri Mar 24, 2017 8:17 am Post subject: |
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In my case it was less about simplicity and convenience and more about using the slave receptical for more than a cool fender ornament. 
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keep 'em rollin'
RICKG MC 51986 DOD 01-52, '50 CJ3a |
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wesk
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Location: Wisconsin
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Hawkshadow
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Joined: Oct 10, 2012
Posts: 310
Location: Toronto, Ontario, Canada
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| Posted: Sun Mar 26, 2017 11:15 am Post subject: |
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I needed a new slave receptacle and the new one came with a stubby ground lead. (better to have a functional "almost-correct" piece rather than a useless receptacle with the cap seized on. But I digress). I ran the positive to the positive post on the cowl battery and the negative to a quick ground within reach. I find this setup very easy to use and charge/ tend the entire system together.
The leads on my Bosch C7 come with eyelets where you can attach the aligator clips. As it just so happens, the eyelets are the perfect size for the receptacle.
I've been using this system for over a year now and would highly recommend it for efficiency and ease of use.
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Jordan
M38 CDN
52-30718
Last edited by Hawkshadow on Sun Mar 26, 2017 1:23 pm; edited 1 time in total |
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