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07-21-2013, 10:30 AM | #1 |
Not Yet Wild
Join Date: Apr 2013
Posts: 21
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Fully charged battery needs jump start?
Hi: Battery weak form sitting too long as
it won't turn the engine over but will with a jump start. I have a charger (2amp) that doesn't work or the battery's dead or something else because after use the club car still needs a jump start to get the engine turning over. I purchase a new charger with voltmeter which as soon as I hook it up to the battery shows an appropriate 12.6 Volts and displays the battery's 100% charged. Club car still needs a jump start to get going. Check new charger on a lawn mower battery I just bought and added acid to and it also is supposedly at 12.6 Volts and fully charged. I'm beginning to feel like my brain is overcharged. Support at the battery charger company says charger is faulty. A new charger arrives. Yup. 12.6 Volts and fully charged! Lights do come on bright but starter will not budge until I jump start. |
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07-21-2013, 11:36 AM | #2 |
What the ....?
Join Date: Jan 2007
Location: N.E. Wisconsin
Posts: 14,933
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Re: Fully charged battery needs jump start?
First off, you should tell us what year and cart you have until we get to know you better!
So... a quick search tells me you have a 2007 XRT810 That being said... you really should have replaced your battery first before buying a new charger! Yep... your battery may "seem to be" fully charged, BUT... you should have it "load tested", (any auto parts store can do that free for you!) because I'm guessing that it's lived it's life, and it just can't take the pressure anymore! I have a 2007 XRT550 Lynx (upgraded DS) and I just replaced my original battery last year, It did almost the same thing yours is doing, and a new battery fixed mine! .02 |
07-21-2013, 12:08 PM | #3 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,193
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Re: Fully charged battery needs jump start?
12.6 isn't fully charged.
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07-21-2013, 12:25 PM | #4 |
......................
Join Date: Apr 2009
Location: FT Lauderdale FL.
Posts: 16,416
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Re: Fully charged battery needs jump start?
No 12.6 is not fully charged, that's only about 87% charged, a fully charged 12v battery is 12.73, just because the meter says it fully charged don't mean the battery is good. When you put a load on it, like the starter, it could drop to way below what it need to start the motor. Take your DVM/ volt meter, and hook it to your battery and try to crank the motor and see what the volts drop to, that will tell the story, is all your cables clean and tight, how long was the battery off the charger when you took the reading of the battery?, to get true reading the battery volts it needs to be off the charger for around 12 hours to get a true reading. How old is the battery?
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07-22-2013, 07:20 AM | #5 |
Not Yet Wild
Join Date: Apr 2013
Posts: 21
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Re: Fully charged battery needs jump start?
You guys are great. Yes, probably should have bought
a battery first as yes, I do have a '07 XRT810 (Thanks for looking it up and I should have put that in the text) with what is probably the original battery; got the cub second hand so the battery's 6 years old and sat for months no doubt too. Even if it's not dead it probably would be in ther near future. Now, after letting it sit for 18 hours the battery shows 12.7 volts (display would show 12.8 next [no hundreths]) and upon turning the key to attempt to crank (starter doesn't make a peep) it shows no change in voltage. Turning on the headlights dropped the voltage to 12.4. The voltmeter is integrated into the charger and it displays the voltage as soon as the charger is hooked up. So when I switch the charger to 2 amp charge it no longer reports 100% charged but now displays 40% and commences to start charging. After charging for 20 minutes or so it's at 13.9V and 65% charged. The 1st charger did this too and brought the charge up to 100% after over 12 hours during which time I thought it might be "desulfating" the battery -something referred to in the instructions that the charger could detect and attempt to rectify without indicating as far as I could tell that it was doing it. Didn't change a thing. Cables are clean and secure. Just occurred to me that after I jump started the club car yesterday I used it maybe 20 minutes. If I'm thinking right after 20 minutes the generator should have done some charging if the voltage regulator is working but when I turned the club car off and tried starting, nothing. I'll see about getting the battery checked out. Thanks |
07-22-2013, 08:32 AM | #6 |
Stay thirsty my friends!
Join Date: Jan 2007
Location: Suburban Chicago
Posts: 24,292
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Re: Fully charged battery needs jump start?
You need a standalone digital voltmeter to troubleshoot a battery correctly.
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07-22-2013, 09:26 AM | #7 |
Gone Wild
Join Date: Aug 2011
Location: Bunnell, Florida
Posts: 2,408
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Re: Fully charged battery needs jump start?
Try turning on the headlights and then try starting the cart. If the headlights go out, then your battery is toast or you have a bad connection. I've seen perfectly looking battery cables that had bad connections inside of the terminal ends. Like " Gorno " said you really need a multimeter to check for voltage drops, voltage under load, etc. They're pretty cheap and you can get one at any auto parts store, Walmart, Bestbuy, Radio Shack, Target, - - - -!
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07-22-2013, 12:56 PM | #8 |
Not Yet Wild
Join Date: Apr 2013
Posts: 21
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Re: Fully charged battery needs jump start?
Getting a multimeter later today and plan
on rechecking the connections and trying the light test. Thanks again. |
07-24-2013, 12:10 PM | #9 |
Not Yet Wild
Join Date: Apr 2013
Posts: 21
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Re: Fully charged battery needs jump start?
OK. Before running out to get the multimeter
I let the charger finish its 2 Amp cycle and tried the cart and it starts right up! Mystified but happy I go for a victory ramp and tuck it in for the night. Late the next morning I finally found an excuse to start it up and use it and nothing; won't turn over or even click. Get a multimeter which displays 12.9 Volts. Going past a auto parts store anyways so I take the battery along and it flunks. Rated CCA (not sure what that is) of 500 with a measured CCA of 271. The tester there finds the voltage to be 12.85. Pretty darn close to the inexpensive multimeter. I leave without buying a replacement as I've got a coupon being sent to me to save by buying online and picking it up at the store. Online they can't find a replacement battery and recommend I take it to the store. Anyone know a replacement battery from a major battery manufactorer? 2007 XRT810 Thanks |
07-25-2013, 06:31 AM | #10 |
What the ....?
Join Date: Jan 2007
Location: N.E. Wisconsin
Posts: 14,933
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Re: Fully charged battery needs jump start?
My cart originally came with a Group 70 (size) battery, and 3 places I went to didn't stock them,
I measured the battery tray and found I could fit a Group 75 (slightly longer) in it, so I bought that! It was a tight fit... but it fit! Here's a chart of battery group numbers that show physical battery sizes, note your original battery group size, and try to find one that is the closest! http://www.rtpnet.org/~teaa/bcigroup.html Hope this helps! |
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