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Unread 09-03-2014, 04:20 PM   #1
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Default Charger / OBC problems?

I am working on 07 club car precedent and need some help. What i have is i got this cart and it had bad batteries in it so i installed 4 new 12 volt batteries and after installing batteries cart runs fine but when i plug the charger up the charger does nothing no click or anything. Then i unplug charger and cart will not move or do anything no reverse buzz or nothing so i reset obc and cart will run. I tried the charger on another cart to make sure it wasn't the charger and it worked fine. My next step was to bypassing the obc by taking grey wire to neg terminal on battery 4. I then plug charger in and it clicks but no movement on the amp meter and not humming. my question is why does charger click but not charge with the obc bypassed or am i doing something wrong when trying to bypass obc. I want to know if yall thing i have a bad obc causing it to trip every time i plug charger up to it. Thanks for any help.
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Unread 09-03-2014, 09:18 PM   #2
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Default Re: Charger / OBC problems?

Does your main negative wire, run thru the hole in the obc?

Also, I find in a lot of precedents, when you open the cover to access the obc, I find a ton of battery corrosion all around and on the obc. Sometimes this eats up the wires, especially the black wire from the charge receptacle where it plugs in.
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Unread 09-03-2014, 09:29 PM   #3
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Default Re: Charger / OBC problems?

Your charger is clicking because you're bypassing the control circuit of the OBC. That has nothing to do with charging. All you're doing is forcing the relay to click. A Precedent OBC will not allow power to pass through it unless it commands the turn on signal and closes the internal charge connection. If you had a standalone charger such as a DPI you would bypass the charge circuit of the OBC by running a new #10 negative wire from the back of the charger receptacle to the main negative battery post. It sounds like you have a bad OBC to me.
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Unread 09-04-2014, 06:46 AM   #4
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Default Re: Charger / OBC problems?

So there is no way to bypass obc with the charger I have? Or can I just run another wire from back of receptacle to main negative.
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Unread 09-04-2014, 08:19 AM   #5
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Default Re: Charger / OBC problems?

Quote:
Originally Posted by bdmills View Post
So there is no way to bypass obc with the charger I have? Or can I just run another wire from back of receptacle to main negative.
The charger you have now is controller by the OBC. If you hardwired the grey wire to B- and bypassed the negative charge wire the charger would turn on, but it would never turn off.
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Unread 09-04-2014, 08:42 AM   #6
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Default Re: Charger / OBC problems?

Ok I did know it would stay on. I was just trying keep batteries charged while I wait for new obc. Thanks.
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