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Unread 09-21-2014, 05:23 PM   #1
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Default Battery questions 48v -99

Hi, i own a club car 48v year model 1999. Im from sweden, no cart-forums here, so i bring my questions to you. ;)

I think i need to replace my batteries, but i'm new to this, so how can i check the status of my batteries? Is there any way of reconditioning the batteries?

I have 6 batteries, with 4 cells on each one, so i suppose they are 8 volts? The batteries are trojan, also labeled "powerdrive". But thats all i can find, no model number or anything. So what replacement batteries am i to buy? What model?
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Unread 09-21-2014, 05:56 PM   #2
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Default Re: Battery questions 48v -99

Peter, Do you have a digital multi meter as well as a battery hydrometer? Judging battery condition starts with making sure all plates are just (1/4") covered with distilled water. Never charge a battery with exposed plates. After charging the batteries allow them to rest about 12 to 16 hours and take a reading of full pack voltage as well as voltage of each battery. An 8 volt battery at 100 percent will hold about 8.49 volts. Other than keeping cells topped off with water, clean tight terminals and well charged there is no way to recondition batteries.
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Unread 09-21-2014, 06:25 PM   #3
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Default Re: Battery questions 48v -99

Thanks, will be back when i have results!
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Unread 09-21-2014, 07:37 PM   #4
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Default Re: Battery questions 48v -99

here is a state of charge chart to help you determine the state of your batteries



Trojan batteries here in the states have a date code stamped in the negative battery terminal



a= jan
b= feb
c= mar
ETC....
0=2010
1=2011
2=2012
3=2013
4=2014
5=2005
*NOTE most batteries last 6~7 years so date code is 0~9
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Unread 09-22-2014, 05:49 PM   #5
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Default Re: Battery questions 48v -99

Got a multimeter and hydrometer today, now charging batteries. Will do the tests tomorrow. Just went outside to see if it was still charging, it was, and i could hear a bubbling noice from the batteries?
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Unread 09-22-2014, 05:51 PM   #6
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Default Re: Battery questions 48v -99

Do i need to disconnect the batteries when testing individual batteries with the multimeter?
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Unread 09-22-2014, 06:04 PM   #7
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Default Re: Battery questions 48v -99

bubbling is normal ...that is why you fill batteries (1/4" over plates) after charging
distilled water only

no you do not need to disconnect batteries to test
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Unread 09-22-2014, 06:17 PM   #8
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Default Re: Battery questions 48v -99

When checking older batteries I would think it safe to say that after they are fully charged and the charger has shut off get a set of voltage readings soon thereafter just the see where they peak at. But the readings that count come after least 12 hours rest.... And if at all possible without using the cart get several more sets of readings each 12 hour period for the next couple of days. This will help you see how well each battery is holding its charge.

My cart had 3 bad battery that would not really show up as bad if you used and charged the cart daily; let them sit a few days and they would just peter out....
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Unread 09-23-2014, 03:04 AM   #9
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Default Re: Battery questions 48v -99

Ok, here comes the first measurements.

Date stamp C7, so that means my batteries is 7 years old?

Pack: 51,4 volts

B1: 8,59
B2: 8,62
B3: 8,52
B4: 8,62
B5: 8,47
B6: 8,58

Will do a new check this evening.
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Unread 09-23-2014, 03:09 AM   #10
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Default Re: Battery questions 48v -99

At what point should i do the hydrometer test? And can you point me to a guide on how to do it.

While i wait im gonna change the oil in the rear-end, this hasn't been done in the last 3 years...
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