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Unread 07-15-2014, 10:40 AM   #1
Not Yet Wild
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Default Testing individual Batteries to make a good pack?

I just acquired 3 2011 CC Precedents all with 48 volt 6x8 packs in them. My question is how would I test each individual battery and make one or possibly 2 good packs and weed out any bad ones. Hopefully I will just be able to replace all in one of the carts.

Thanks.
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Unread 07-15-2014, 11:15 AM   #2
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Default Re: Testing individual Batteries to make a good pack?

first fully charge each pack and let sit 12hrs
test each battery with a DVM


put 6 best readings together for one pack
then next 6 best as 2nd pack
last 6 together
any under 8.3v (75%) charge are on the way to dieing


Last edited by crash test dummy; 07-15-2014 at 11:28 AM.. Reason: added pic
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Unread 07-15-2014, 11:31 AM   #3
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Default Re: Testing individual Batteries to make a good pack?

Quote:
Originally Posted by Quizzy View Post
I just acquired 3 2011 CC Precedents.


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Unread 07-15-2014, 11:35 AM   #4
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Default Re: Testing individual Batteries to make a good pack?

Good advice Crash
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Unread 07-15-2014, 12:17 PM   #5
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Default Re: Testing individual Batteries to make a good pack?

Here is another question. One of the carts the batts are so low it won't charge. Any suggestions? Or how do you charge a single battery?
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Unread 07-15-2014, 12:59 PM   #6
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Default Re: Testing individual Batteries to make a good pack?

what chargers are available ?
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Unread 07-15-2014, 01:04 PM   #7
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Default Re: Testing individual Batteries to make a good pack?

Thats the issue. i have the cart chargers and then a bunch of 12 volt chargers.
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Unread 07-15-2014, 01:09 PM   #8
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Default Re: Testing individual Batteries to make a good pack?

name of cart chargers ?

you can jump the relay in some chargers and get batteries up to a min of 30v so charger will come on

on ds models you can by pass the obc but on prec i don't know
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Unread 07-15-2014, 01:13 PM   #9
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Default Re: Testing individual Batteries to make a good pack?

They are power drive 3 chargers
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Unread 07-15-2014, 01:25 PM   #10
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Default Re: Testing individual Batteries to make a good pack?

You can put a 12v (up to 6A) charger on a SINGLE 8 volt golf cart battery for an hour or so just to bring the voltage up to something respectable - but don't do that unattended, because your 12v charger may get hot, or protest in some other way (thermal shutdown). One by one you should be able to get them back to a decent voltage where the big charger will work....unless they are really trashed.
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