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30-12-2014
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CrawlerStar
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Join Date: Dec 2014
Posts: 292 What Jeep do I drive?: CJ
Likes: 215
Liked 94 Times in 69 Posts
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Quote:
Originally Posted by Richard buttocks
I think the cheapest dmm that does amps is like $15-20 at jaycar
Mind you its only 10A
But they dont make anything higher...
As jeepcj said a dc-dc charger is best
But not many people wanna spend that sort of money
I have a redarc dc-dc thats also solar in my camper, best thing ever.
You need to test the current draw
And maybe even get the batteries tested
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Yes Richard, they work awesome when used in conjunction with solar  
It's a shame there so expensive but a lot cheaper than replacing stuffed batteries all the time
__________________
cheers, AL
BIGGER IS ONLY BIGGER
the nut's behind the wheel make all the difference
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30-12-2014
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CrawlerStar
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Join Date: Dec 2014
Posts: 292 What Jeep do I drive?: CJ
Likes: 215
Liked 94 Times in 69 Posts
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Quote:
Originally Posted by Richard buttocks
That is sooooo hard to read
Mainly because my brain starts to bleed.
Jeeps certainly have diodes in the alternator.
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How true
Yeah OBD1 and OBD2 on Jeeps use the ECU to control charge rates etc so no internal voltage regulator... Sweet and easy to fit higher output alternator from other Jeeps providing its the same mounting brackets   
__________________
cheers, AL
BIGGER IS ONLY BIGGER
the nut's behind the wheel make all the difference
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30-12-2014
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CrawlerStar
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Join Date: Jul 2014
Posts: 1,657 What Jeep do I drive?: WJ
Likes: 34
Liked 388 Times in 291 Posts
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Quote:
Originally Posted by Richard buttocks
That is sooooo hard to read
Mainly because my brain starts to bleed.
Jeeps certainly have diodes in the alternator.
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really ? gee i wonder why the layout of the 2002 4.7L didn't have any ?
sounds like you need a doctor.
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31-12-2014
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EL CAPITANO DESTRUCTO
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Join Date: Jan 2013
Location: gold coast
Posts: 2,443 What Jeep do I drive?: XJ
Likes: 770
Liked 1,911 Times in 804 Posts
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Quote:
Originally Posted by bleetnblurt
really ? gee i wonder why the layout of the 2002 4.7L didn't have any ?
sounds like you need a doctor.
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They have diodes.
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31-12-2014
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Full Flexer
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Join Date: Jan 2009
Posts: 1,132 What Jeep do I drive?: XJ
Likes: 43
Liked 187 Times in 119 Posts
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Sorry, I have not read all the posts before writing, but if it is a preupdate, the cause could be the glovebox lamp being on when the glovebox door is not properly closed or there is some obstruction to the lamp on off switch. It happened to me on a new battery a long time ago and I was struggling to find a cause. I discovered the cause in the dead of night. I laughed when I found light coming through the side of the door opening.
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31-12-2014
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MonsterMoose
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Join Date: Nov 2003
Location: Brisbane, Southside
Age: 52
Posts: 10,547 What Jeep do I drive?: WK2
Likes: 369
Liked 1,113 Times in 693 Posts
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Quote:
Originally Posted by bleetnblurt
in a standard blonk car runs diodes these little things convert AC to DC , and as well stopping the current running backwards into the ALT , but in the jeeps that I know they all run AC and do not have diodes , they use the computer to do the regulating of voltage , I had a huge battery here once , man the thing would read 12.8 volts but the thing wouldn't even wind over a four cyl . just like the diesel I had a 800 cca crank , but would drop to 740 after a while even if not connected , it was not enough to crank the four cyl diesel . ifr I leave the wj connected for a week , the battery in mine still has power to crank over , that's with the AMP and cd player in and security on . cold cranking amperage leaving a battery on dirt , concrete will kill it , sitting for two weeks connected without starting it will flatten it , if I could find a trickle battery for this stupid solar panel without costing me the amount of a igniter for a rocket I would be happy , but even the standard car battery here where I live may as well be called GREEN ACHRES mmmm theres a idea LoL
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WTF is this????
__________________
JJ
Do it once, Do it right!
2014 WK2 Overland
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31-12-2014
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MonsterMoose
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Join Date: Nov 2003
Location: Brisbane, Southside
Age: 52
Posts: 10,547 What Jeep do I drive?: WK2
Likes: 369
Liked 1,113 Times in 693 Posts
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Quote:
Originally Posted by bleetnblurt
really ? gee i wonder why the layout of the 2002 4.7L didn't have any ?
sounds like you need a doctor.
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Seriously????
Ever tried to charge a battery off AC, don't think so....
__________________
JJ
Do it once, Do it right!
2014 WK2 Overland
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1996 JEEP CHEROKEE