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Unread 06-24-2009, 09:10 PM   #1
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Question 99 Club Car Charger won't go below 10 amps

I'm guessing I have failing batteries. Any input would be greatly appreciated.
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Unread 06-24-2009, 09:12 PM   #2
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Default Re: 99 Club Car Charger won't go below 10 amps

Quote:
Charger won't go below 10 amps
After how many hours?
Get an individual voltage reading on each battery with a digital meter and post the results.
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Unread 06-24-2009, 09:16 PM   #3
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Default Re: 99 Club Car Charger won't go below 10 amps

Worked great for 3 weekends (cycled from 15 to 0 in a few hours), then charged for 12 hours. never dropped below 10 amps. Tried a friends charger..same result.

8.4 on one, the rest where 8.2
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Unread 06-24-2009, 09:19 PM   #4
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Default Re: 99 Club Car Charger won't go below 10 amps

I just takes one bad cell to keep a charger on. Can you load test or use a modern hydrometer with temperature compensation?
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Unread 06-24-2009, 09:24 PM   #5
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Default Re: 99 Club Car Charger won't go below 10 amps

I did a 50 amp load test. Voltage dropped to 7.2 on the 8.2s and 7.4 on the 8.4. Then went back to approx 8 on all of them. The hydrometer results were about 50/50 - 100% and 75% charged
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Unread 06-24-2009, 10:24 PM   #6
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Default Re: 99 Club Car Charger won't go below 10 amps

I was scanning through some other threads and found one that said you can charge an 8 volt battery for 15-20 min with a 12 volt charger??? Is that true, and worth a try for this issue?

Thanks again.
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Unread 06-25-2009, 09:22 AM   #7
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Default Re: 99 Club Car Charger won't go below 10 amps

My guess is your batteries have reached the end of their lifespan. 8v batteries that show 8v are only 40%-50% charged. 8.2v which is the majority is 60%-70% charged and the charger is going to keep on chugging until it gets to the 8.6v goal. After loading and getting numbers like 7.2 the battery is considered dead.
I reckon you can't do much harm giving the 8v batteries a 20 minute hit with 12v because they appear to be done anyways.
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Unread 06-25-2009, 11:17 AM   #8
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Default Re: 99 Club Car Charger won't go below 10 amps

Thanks for the info....lucky for me I got the sell price down on the cart for the batteries being so old...I'll give the 12 volt a try...maybe I can breathe a little more life out of them.
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Unread 06-29-2009, 05:12 PM   #9
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Default Re: 99 Club Car Charger won't go below 10 amps

Found it

One battery was only @ 6 volts after sitting for a week.

The rest where weak and 10 years old, so changed them all

Expensive, but if you want to play , you have to pay..

Thanks for the help everybody.
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Unread 06-29-2009, 05:35 PM   #10
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Default Re: 99 Club Car Charger won't go below 10 amps

Glad you got it fixed and can now enjoy your new cart. It will take about 6-10 charging cycles before the batteries come up to their potential. Check the water once a month, use only distilled water and you should be good for the next 5 years.
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