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Electric golf carts Harley Davidson, Melex, Pargo, Taylor-Dunn and other Misc. Carts. |
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![]() | #1 |
Not Yet Wild ![]() Join Date: Jun 2009 Location: Wisconsin
Posts: 17
| ![]() I'm guessing I have failing batteries. Any input would be greatly appreciated. |
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![]() | #2 | |
Gone Wild Join Date: Mar 2009 Location: Roseville, CA
Posts: 2,757
| ![]() Quote:
Get an individual voltage reading on each battery with a digital meter and post the results. | |
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![]() | #3 |
Not Yet Wild ![]() Join Date: Jun 2009 Location: Wisconsin
Posts: 17
| ![]() Worked great for 3 weekends (cycled from 15 to 0 in a few hours), then charged for 12 hours. never dropped below 10 amps. Tried a friends charger..same result. 8.4 on one, the rest where 8.2 |
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![]() | #4 |
go to cartsunlimited.net ![]() ![]() Join Date: Dec 2007 Location: Southern California
Posts: 67,563
| ![]() I just takes one bad cell to keep a charger on. Can you load test or use a modern hydrometer with temperature compensation? |
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![]() | #5 |
Not Yet Wild ![]() Join Date: Jun 2009 Location: Wisconsin
Posts: 17
| ![]() I did a 50 amp load test. Voltage dropped to 7.2 on the 8.2s and 7.4 on the 8.4. Then went back to approx 8 on all of them. The hydrometer results were about 50/50 - 100% and 75% charged |
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![]() | #6 |
Not Yet Wild ![]() Join Date: Jun 2009 Location: Wisconsin
Posts: 17
| ![]() I was scanning through some other threads and found one that said you can charge an 8 volt battery for 15-20 min with a 12 volt charger??? Is that true, and worth a try for this issue? Thanks again. |
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![]() | #7 |
Gone Wild Join Date: Mar 2009 Location: Roseville, CA
Posts: 2,757
| ![]() My guess is your batteries have reached the end of their lifespan. 8v batteries that show 8v are only 40%-50% charged. 8.2v which is the majority is 60%-70% charged and the charger is going to keep on chugging until it gets to the 8.6v goal. After loading and getting numbers like 7.2 the battery is considered dead. I reckon you can't do much harm giving the 8v batteries a 20 minute hit with 12v because they appear to be done anyways. ![]() |
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![]() | #8 |
Not Yet Wild ![]() Join Date: Jun 2009 Location: Wisconsin
Posts: 17
| ![]() Thanks for the info....lucky for me I got the sell price down on the cart for the batteries being so old...I'll give the 12 volt a try...maybe I can breathe a little more life out of them. ![]() |
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![]() | #9 |
Not Yet Wild ![]() Join Date: Jun 2009 Location: Wisconsin
Posts: 17
| ![]() Found it ![]() One battery was only @ 6 volts after sitting for a week. The rest where weak and 10 years old, so changed them all ![]() Expensive, but if you want to play , you have to pay.. Thanks for the help everybody. |
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![]() | #10 |
Gone Wild Join Date: Mar 2009 Location: Roseville, CA
Posts: 2,757
| ![]() Glad you got it fixed and can now enjoy your new cart. It will take about 6-10 charging cycles before the batteries come up to their potential. Check the water once a month, use only distilled water and you should be good for the next 5 years. |
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