02-20-2014, 07:14 AM | #1 |
Not Yet Wild
Join Date: Sep 2011
Posts: 63
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Opinion on batts
I have a 1997 CC DS with T-875s. One has gone bad (dead cell), the others are reading 8.3 volts using a DMM. My question is are these batts still in good shape? The chart in the stickys said they should read 8.49 volts at full charge. Just wanting to know is the whole pack shot or can I get by on buying just one batt.
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02-20-2014, 09:12 AM | #2 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,183
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Re: Opinion on batts
Voltage after charging is not telling the whole story. You need to load test them to tell more about their condition.
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02-20-2014, 09:18 AM | #3 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,418
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Re: Opinion on batts
A SOC test done at any time will give a good comparison of the battery condition. A good hydrometer can be had at any auto parts store. (not the floating balls type through) What you are looking for is not only a 12.77 (at 80*F) but the difference between cells (not more than 20 points) and the difference between batteries within the pack.
Your voltage reading is only 80% - so if you have charged within 24 hours and not run the cart I'd say you need new batteries. |
02-20-2014, 09:28 AM | #4 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Opinion on batts
There is no way he is getting a good charge with a dead cell, so any SOC measurements will be inaccurate.
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02-20-2014, 10:00 AM | #5 |
Not Yet Wild
Join Date: Sep 2011
Posts: 63
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Re: Opinion on batts
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02-20-2014, 10:21 AM | #6 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Opinion on batts
How old are the batteries?
Did you buy them new or did they come with the cart? |
02-20-2014, 10:36 AM | #7 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,418
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Re: Opinion on batts
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02-20-2014, 12:01 PM | #8 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Opinion on batts
I absolutely agree with the test procedure you described, I was just pointing out he is not getting a good charge and therefore the results would not be valid (or the assumption of what the results mean would not be valid).
Aside from having an 8v or a 24v charger to charge the batteries individually or in a group, I would take a chance based on the age and origin of the batteries. If I bought them new, took good care of them and they are less than 4 years old, I would try an used one and charge the pack. If the origin of the batteries is unknown (came with the cart) and are more than 3 years old, I would just buy new ones. |
02-20-2014, 01:02 PM | #9 | |
Not Yet Wild
Join Date: Sep 2011
Posts: 63
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Re: Opinion on batts
Quote:
What I'd like to do is trade it straight up for a gas cart of the same caliber. |
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02-20-2014, 04:01 PM | #10 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,418
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Re: Opinion on batts
What I meant was for him to look for any imbalance in the batteries. A pack of batteries that reads 12.50 all the way across is still usable if there is no big difference between any of the cells in any of the batteries.
Based upon the age of the batteries he is due for a new set. Replacing the failed battery with a used battery will hold them over until the next one fails. This may be a week or maybe two or three months. That's a roll the dice. If the budget is tight, this may be a good way to go. I'm sorry if my post was miss understood |
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