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Dumb (probably) question about jump starting a Pinzgauer

Posted: Fri Feb 01, 2008 2:16 pm
by texas pinzgauer
Amongst the emergency provision I keep in my Pinz is a set of jumper cables. It's never been a problem in the past but I was wondering whether I'm going to blow something up if I ever do find myself needing a jump start? The presumption is that the other vehicle has a 12V system...

The second part of the question then is, at what points would you attach the cables?

I know this is such a basic question as to be unbelievable but....I don't know the answer and I know one of you do.

Thanks!

Posted: Fri Feb 01, 2008 3:01 pm
by Erik712m
One of the local guys here told me he had jumped his pinz with 12v truck before.

Posted: Fri Feb 01, 2008 3:02 pm
by Erik712m
Not sure i would jump a 12v car with the pinz.

Posted: Fri Feb 01, 2008 3:53 pm
by bernhard
I’ve jumped my pinz and my buddy’s pinz off my 12 volt dodge many times never had a problem. I just hooked both leads to one of the battery.

jump start

Posted: Fri Feb 01, 2008 5:16 pm
by Brickren
So I guess you could jump a semi?

jump start

Posted: Sat Feb 02, 2008 10:55 am
by texas pinzgauer
Thanks for the feedback guys.

Posted: Sat Feb 02, 2008 8:28 pm
by undysworld
In my experience, when the truck was "dead", only one battery was really discharged. Thus jumping just that one battery would give me enough charge to start.
I attach a jumper cable (or battery pack) to one battery as usual (+ to + and - to -) and try the starter. If it doesn't work, I attach to the other battery and try it. Rarely are both batteries DOA.
I occasionally put the trickle charger on the batteries, one at a time, and top them off. If I'm concerned, I carry a 12v battery pack and I've never been stuck. I don't like a dead truck.
The Pinz runs on 24 v, and this is achieved by both batteries hooked up in series. When disconnected, each battery is just a normal 12v battery. Just treat each battery as a normal 12v when charging (disconnected).

Posted: Sun Feb 03, 2008 7:38 pm
by I-10pinz
Just out of curiosity the way the batteries are connected what would happen if you stuck the positive lead to one battery's + and the negitive lead to the other battery's -?

Simple answer...

Posted: Tue Feb 05, 2008 1:47 am
by trscott
Well, I don't yet own a Pinz (yet...), but I have worked with electronics for a few decades, so... (I am assuming you have a 24V negative ground system on a Pinz, is that correct??? Not positive ground is it???)

Since the 24V Pinz electrical is really two 12V batteries in series, you could easily and safely provide a jump to a 12V vehicle by just hooking your jumper cables to one of your 12V batteries. It doesn't really matter which one you use since the two vehicles do not share a common ground.

If you want to receive a jump from a 12V vehicle you will likewise want to connect the 12V leads to just one of your 12V batteries if for no other reason that you won't blow out the 12V guy's electrical once your alternator kicks in. In this case, you might want to try one of your 12V batteries, and then if that doesn't work right away, change the hookup to the other one. Very likely one or the other will be a bit weaker than the other. Probably the best plan would be to connect the 12V jumpers to one of your 12V batteries and just let it charge for a minute or two, and then connect the jumpers to the other battery and try starting.

Just remember that only one of your 12V battery's negative leads is tied to your ground. the other battery will have it's negative lead tied to the positive lead of the other battery.

Symbolically:

Ground >>> -[ 12V Battery1 ]+ >>> strap >>> -[ 12V Battery2 ]+ >>> +24V

The midpoint between the two batteries is 12V with respect to your ground, and the +24V point is only 12V with respect to the midpoint. They are still each 12V batteries.

I don't know, this is probably quite obvious to most of you, but sometimes I know this stuff can be confusing to some people. Just trying to make it very clear.

Cheers!