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Unread 02-28-2011, 07:49 PM   #1
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Default need help/info on battery break in

Ok here is the issue I am faced with, I live in a largely retirement age community while still be fairly young (lol 42) and mobile. I was asked to put a new set of batteries in a neighbors golf cart (95 cc) I installed the batts and explained the break in procedure to her, using my charger (as hers has been stolen) I put the new batts on the charger to bring them up to full before she used the cart, that was yesterday at 2pm it is now 6:45pm 28 hours later and the charger was still running. Has anyone ever had the break in charge take this long the charger is hovering at about 4amps. I have had it take 18 hours for a break in charge but never this long. I know the charger is working properly as it works on my cart fine, I am sure that her OBC is working as it cycled the charger on and off, before starting the charge cycle. Am I missing something or is this in the normal parameters for the break in charge. Thank you all for your help on this one.
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Unread 02-28-2011, 08:35 PM   #2
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Default Re: need help/info on battery break in

Normally the OBC will not allow the charger to stay on continuously for more the 16 hours if working correctly .
So unplug the charger take readings on the pack 10-12 hours from now .
If it is really low check each battery and post results here.
If it's close to normal , then plug it up again and keep a close eye on it.
On more than one occasion lately , people have gotten bad batteries straight off the shelf.

and read this post from cheep jeep http://www.buggiesgonewild.com/attac...tery-guide.pdf
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Unread 02-28-2011, 08:57 PM   #3
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Default Re: need help/info on battery break in

Thanks for the reply, I have unplugged her cart as I needed to charge mine and will check her batts spec. gravity and charge per batt tommorrow with a meter when I get home.
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Unread 02-28-2011, 09:14 PM   #4
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Default Re: need help/info on battery break in

Curious what the voltage was at 28hours?

Double check one battery is not connected wrong.

Voltage test will tell . NOW!
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Unread 02-28-2011, 09:19 PM   #5
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Default Re: need help/info on battery break in

Quote:
Originally Posted by scottyb View Post
Curious what the voltage was at 28hours?

Double check one battery is not connected wrong.

Voltage test will tell . NOW!
Yep thats what I was thinking , if the voltage is close he is ok (theroetically speaking).
If not then when he measures and its realy low and he post the results,
we'll know !
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Unread 02-28-2011, 09:19 PM   #6
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Default Re: need help/info on battery break in

Scotty, double checked all batt wiring before starting charge to make sure it was right, I didn't have my meter with me on the way home tonite, or when I went back to unplug and retrieve charger, I will check the volts tomorrow on the way home and post results.
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Unread 02-28-2011, 09:29 PM   #7
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Default Re: need help/info on battery break in

Not really pertinent info at that time ... Something is wrong at 28 hours. THe batteries were sitting on the shelf 4 mos? Something.
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Unread 03-01-2011, 07:11 PM   #8
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Default Re: need help/info on battery break in

Ok checked the volts on the batts tonite on the way home all batts were reading at 8.3 to 8.4, so 100% by state of charge, I am guessing that there is something wrong with the OBC in her cart, not telling the charger to shut off, It is cycling properly when I plug the charger in and I know there is not a problem with the charger as it is working fine on my cart. Not really sure where to go from here. Still thinking that 28 hours is a bit extreme for break in, oh and batts are dated Feb, 11 so they haven't sat on the shelf.
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Unread 03-01-2011, 07:14 PM   #9
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Default Re: need help/info on battery break in

Reset the OBC???
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Unread 03-01-2011, 07:45 PM   #10
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Default Re: need help/info on battery break in

Quote:
Originally Posted by gornoman View Post
Reset the OBC???


NOTE: at 8.3 battery is only at 80% , so after OBC reset try charging again for a few hours.
read this State of Charge Readings
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