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Author Topic: 2 12volt batteries?  (Read 4065 times)

Offline RHYTHM

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2 12volt batteries?
« on: December 02, 2002, 02:31:00 PM »
???????? I want to install another 12volt battery so can I just install a battery islotator after the alt or from the main hot wire going to the battery
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Offline Steve A

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2 12volt batteries?
« Reply #1 on: December 02, 2002, 02:35:00 PM »
Not sure I understand your question - the "main hot wire going to the battery" is from the alternator.
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Offline RHYTHM

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2 12volt batteries?
« Reply #2 on: December 02, 2002, 02:54:00 PM »
I didn't know if the bike had a alt.  If so why doesn't the bike keep on running when I disconnect the battery like on a car.  This is normally how I check to see if I have a bad alt or battery.
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Offline Steve A

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2 12volt batteries?
« Reply #3 on: December 02, 2002, 03:04:00 PM »
It may be that the bike alternator doesn't put out enough to cover the drain at a low (idle) rpm.  Most of the bike alternators don't do much at low rpm.  Other than that I don't know.
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Offline Johnnycheese

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2 12volt batteries?
« Reply #4 on: December 02, 2002, 03:28:00 PM »
the busa has a generator
the old school GSXR had an alt.
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Offline Steve A

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2 12volt batteries?
« Reply #5 on: December 02, 2002, 03:37:00 PM »
Well, that answers his question..  At what RPM does the generator show a charge???
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Offline RHYTHM

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2 12volt batteries?
« Reply #6 on: December 02, 2002, 03:37:00 PM »
I thought about what you said about low idle ?  Sounds like that would be an example of a generator and from what I could remember I didn't notice an alt in the service manual only a three phase A.C. generator.  So if I'm reading the manual correctly can I install a battery isolator after this(mainline going to the batteries). Will it support two 12volt batteries with the same specs.
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Offline Steve A

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2 12volt batteries?
« Reply #7 on: December 02, 2002, 03:39:00 PM »
My mistake about the alternator.
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Offline RHYTHM

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2 12volt batteries?
« Reply #8 on: December 02, 2002, 03:50:00 PM »
So I guess it's not possible to hook up an battery isolator .  Just do it an series with the main battery I guess .  Can the main system maintain two batteries rated at the same specs?
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Offline Steve A

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2 12volt batteries?
« Reply #9 on: December 02, 2002, 03:54:00 PM »
You should be able to use a battery isolator - whether alt. or gen. -  unless you want 24V it would be better to wire in parallel.  Look in the isolator instructions and see what they show.
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Offline RHYTHM

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2 12volt batteries?
« Reply #10 on: December 02, 2002, 04:03:00 PM »
Good lQQk'n out STEVE       . I'll post the  result as soon as I complete this project .  Thanks for your input as well Johnny Cheezzzzzzzzzzzzzzzze  
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Offline SJJBusa

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2 12volt batteries?
« Reply #11 on: December 02, 2002, 05:14:00 PM »
quote:
If so why doesn't the bike keep on running when I disconnect the battery like on a car. This is normally how I check to see if I have a bad alt or battery.  
In the service manual, it cautions you to  never  disconnect the battery when the bike is running. You risk ruining the ECU if you do.

SJJBusa
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Offline RHYTHM

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2 12volt batteries?
« Reply #12 on: December 02, 2002, 05:41:00 PM »
?????????? There is no gurantee in risk. Beside this not a common practice I do on my bike thanks anyway bro.  If you do decide to do this test(unpluging your battery to see if your alt is still working) on your car I would suggest going to sears an purchasing a 9 volt componet that plugs into your cigaret lighter to prevent any damage to your car EMCU.  
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