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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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03-11-2012, 07:09 PM | #1 |
Gone Wild
Join Date: Aug 2011
Location: Tyler, Texas
Posts: 661
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One battery has high voltage
I bought a 1999 Txt today and the batteries are about 6 months old. I brought it home and hooked up the charger. After about an hour of charging I noticed that one of the batteries was gassing like crazy and the rest were not. So, I got my MM and checked the voltage on each battery. All the batteries showed 6.9 volts except the one that was gassing so much.. .it showed 8.6 volts. Is that a problem?
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03-11-2012, 09:32 PM | #2 |
Gone Wild
Join Date: Sep 2010
Location: Erie, Pennsylvania
Posts: 989
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Re: One battery has high voltage
Not sure exactly what is going on, but probably the first thing you need to do is let the pack rest 12 hrs, then record individual battery voltages, using a DMM, after resting (noting which one was the high one). This will show the "state of charge" for all batteries. Post the results here for more help. Also letting us know what charger you have and what brand the batteries are may help. If you have battery date codes let us know what they are. - RAY
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03-11-2012, 09:43 PM | #3 |
Gone Wild
Join Date: Aug 2011
Location: Tyler, Texas
Posts: 661
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Re: One battery has high voltage
I could not find a date code but they are Interstate and he said they were put on in the Fall of 2011. The charger is still running (about 5 hours now) and the amp draw is down to about 8. The other batteries seem to be gassing about as much as the "hot" one now but I did not take another voltage reading. I will check the pack voltage tomorrow and see how it looks then. Thanks for the reply. Oh, its a powerwise charger.
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03-11-2012, 09:55 PM | #4 |
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,289
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Re: One battery has high voltage
Be sure to check and adjust the water levels AFTER a completed charge cycle. Are there any 12v circuits coming off the battery pack for lights or stereos?
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03-12-2012, 12:03 AM | #5 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,417
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Re: One battery has high voltage
hey,… That's a good reading for an 8 vote battery. Go take a second look at that battery see how many water fill holes it has. If it's an 8 volt, well it wouldn't be the first time.
I've found 6 V batteries and 48 volt packs and vice versa. |
03-12-2012, 06:13 AM | #6 |
Gone Wild
Join Date: Sep 2010
Location: Erie, Pennsylvania
Posts: 989
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Re: One battery has high voltage
Great point from scottyb!! In fact, I,ve actually seen a case where a cart owner has substituted two 8 v. for two 6 volt batteries in order to "bump" up their voltage a bit, never thinking about what happens when it comes time to charge batteries - RAY
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03-12-2012, 07:18 AM | #7 |
Gone Wild
Join Date: Aug 2011
Location: Tyler, Texas
Posts: 661
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Re: One battery has high voltage
That was my first thought but it's a 6 volt battery.
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03-12-2012, 11:36 AM | #8 |
Gone Wild
Join Date: Aug 2011
Location: Tyler, Texas
Posts: 661
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Re: One battery has high voltage
Ok, I checked on the cart this morning and the charger had completed and turned off. All the batteries measured exactly the same @ 6.55 volts and the pack voltage was @ 39.36 volts. So, I guess everything is ok. Not sure why that battery was showing such high voltage yesterday but it has equalized with the rest now. Thanks for all the replies.
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03-12-2012, 02:59 PM | #9 | |
Gone Wild
Join Date: Aug 2011
Location: Bunnell, Florida
Posts: 2,408
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Re: One battery has high voltage
Quote:
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03-12-2012, 03:13 PM | #10 |
Gone Wild
Join Date: Aug 2011
Location: Tyler, Texas
Posts: 661
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Re: One battery has high voltage
That makes sense. The charger was running when I checked it the first time. I'll keep an eye on that battery. Thanks
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