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Unread 10-11-2008, 02:25 PM   #1
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Default Charging

i have 6-12 volt batteries, two banks of 3 in series, giving me 36 volts. what do i need to do to charge them? can i modify my charger?
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Unread 10-11-2008, 03:25 PM   #2
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Default Re: Charging

Everyone is going to want some more info.

You have a 36v GC charger right?

What type of 12v batteries?
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Unread 10-11-2008, 09:36 PM   #3
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Default Re: Charging

If you are running 6 12volts you are running 72 volts.
Thus blowing up everything on your controller.
If you are running 12v, then you only need 3 batteries.

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Unread 10-11-2008, 11:51 PM   #4
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Default Re: Charging

i do not have 72 volts. i have 36. two banks of 3-12 volt batteries in series, giving me 36 volts, then those banks are in parallel, giving me twice the amperage. i have a resistor cart anyway so there is no controller blowing.

yes, it is a standard 36 volt timer GC charger.

i have 12v gel cell batteries by datasafe. they are now golf cart batteries but they work. my only problem is charging them.
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Unread 10-12-2008, 07:57 AM   #5
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Default Re: Charging

Gotcha.... Good idea!

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Unread 10-13-2008, 01:36 AM   #6
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Default Re: Charging

If you have them wired for 36v and charger is 36v wire as if they were 6 6v. One lead from charger receptable to first battery, other lead to last battery in pack. It will take longer charging times.
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Unread 10-13-2008, 02:27 AM   #7
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Default Re: Charging

Can you draw us a diagram of how you have these wired. I am curious. There could be some problem with drawing from one bank more than the other and the same with the charging circut.....
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Unread 10-13-2008, 03:34 PM   #8
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Default Re: Charging

here is the diagram, as it is seen from the top of my cart.
Attached Images
File Type: jpg Battery Wiring copy.jpg (19.2 KB, 11 views)
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Unread 10-13-2008, 03:38 PM   #9
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Default Re: Charging

Quote:
Originally Posted by buckmanmike View Post
If you have them wired for 36v and charger is 36v wire as if they were 6 6v. One lead from charger receptable to first battery, other lead to last battery in pack. It will take longer charging times.
if i wire the 6-12 volt batteries as if they were 6-6 volt batteries then i'd be charging 72 volts. the way i have them is in fact 36 volts. my charger was working fine but when i went to charge it the other day, i turned the timer knob and it started but then shut off and not even the timer worked. not to mention it smelled really bad. i took the cover off and as far as i can tell, it's ok but it wont work. that is why i am questioning it.
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Unread 10-13-2008, 04:05 PM   #10
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Default Re: Charging

Quote:
Originally Posted by gtrn116 View Post
if i wire the 6-12 volt batteries as if they were 6-6 volt batteries then i'd be charging 72 volts. the way i have them is in fact 36 volts. my charger was working fine but when i went to charge it the other day, i turned the timer knob and it started but then shut off and not even the timer worked. not to mention it smelled really bad. i took the cover off and as far as i can tell, it's ok but it wont work. that is why i am questioning it.
OK, now we get the root of your problem. Saves time if you "tell all" in the first post.

Is the charger in question a Total Charge? More info on the charger and maybe someone can help you troubleshoot your charger.

Are you running 12v backup batteries?
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