Bad Battery

Gorhad · 03-23-2010, 09:22 AM

Last night before we went to bed i checked the pack voltage with my voltmeter and it read 50.3 volts. So i left it off charge. Then this morning went to ride it and it shuddered. So checked the pack voltage and it read 40.7 volts. So i put the charger in and it wouldnt come on.

Next i checked the individual batteries. 5 out of 6 read 8.35 volts, #6 read 6.34 volts.

Just got #6 on a 12 volt charger trying to get it back up there, its now at 6.8 volts, still charging (2 amp charging circuit)

What i cant understand is why a battery would go down that quick, without warning at all.

Checked the water level which was fine. SG is way down off the scale.

FIXEROFCARTS · 03-23-2010, 09:44 AM

Batteries do crazy things and without warning sometimes. Shorted cell it looks like with yours.

scottyb · 03-23-2010, 09:46 AM

A drop of 2 volts means one cell is out of the picture.

Verify this with your Hydrometer if you like.....

Gorhad · 03-23-2010, 10:10 AM

So by charging it with a 12volt charger wont make any difference if the one cell is shot?

Frizbgolf · 03-23-2010, 10:37 AM

Gorhad, sounds like you definately have a bad cell in that battery, charging with a 12v charger won't work in fact it could be dangerous, charging a battery with a bad cell like that could cause it to blow. I have only seen a battery blow once from a bad cell but it wasn't pretty. If it were me I would just replace that one battery.

Gorhad · 03-23-2010, 02:36 PM

Called a couple of local dealers, who said it would be best not to put in 1 new battery as the charging cycle could damage the remainder. Anyway the last one said he has a sept 2009 used US battery. Is that OK to put with T875's

FIXEROFCARTS · 03-23-2010, 09:17 PM

It is best to match brand and age when dropping in a used battery. But sometimes ya gotta do what ya gotta do

golfcarfixer · 03-23-2010, 09:23 PM

Gorhad I have 5 exides and 1 trojan in my cart but they are all the same age and they have been workin fine for 3yrs. now.

03-23-2010, 09:22 AM	#1
Gorhad Gone Wild Join Date: Jan 2010 Location: Brevard County, Florida Posts: 280	Bad Battery Last night before we went to bed i checked the pack voltage with my voltmeter and it read 50.3 volts. So i left it off charge. Then this morning went to ride it and it shuddered. So checked the pack voltage and it read 40.7 volts. So i put the charger in and it wouldnt come on. Next i checked the individual batteries. 5 out of 6 read 8.35 volts, #6 read 6.34 volts. Just got #6 on a 12 volt charger trying to get it back up there, its now at 6.8 volts, still charging (2 amp charging circuit) What i cant understand is why a battery would go down that quick, without warning at all. Checked the water level which was fine. SG is way down off the scale.

03-23-2010, 09:44 AM	#2
FIXEROFCARTS Gone Wild Join Date: Feb 2009 Location: Not sure yet Posts: 500	Re: Bad Battery Batteries do crazy things and without warning sometimes. Shorted cell it looks like with yours.

03-23-2010, 09:46 AM	#3
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,417	Re: Bad Battery A drop of 2 volts means one cell is out of the picture. Verify this with your Hydrometer if you like.....

03-23-2010, 10:10 AM	#4
Gorhad Gone Wild Join Date: Jan 2010 Location: Brevard County, Florida Posts: 280	Re: Bad Battery So by charging it with a 12volt charger wont make any difference if the one cell is shot?

03-23-2010, 10:37 AM	#5
Frizbgolf Gone Wild Join Date: Nov 2009 Location: Picayune, Mississippi Posts: 881	Re: Bad Battery Gorhad, sounds like you definately have a bad cell in that battery, charging with a 12v charger won't work in fact it could be dangerous, charging a battery with a bad cell like that could cause it to blow. I have only seen a battery blow once from a bad cell but it wasn't pretty. If it were me I would just replace that one battery.

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03-23-2010, 02:36 PM	#6
Gorhad Gone Wild Join Date: Jan 2010 Location: Brevard County, Florida Posts: 280	Re: Bad Battery Called a couple of local dealers, who said it would be best not to put in 1 new battery as the charging cycle could damage the remainder. Anyway the last one said he has a sept 2009 used US battery. Is that OK to put with T875's

03-23-2010, 09:17 PM	#7
FIXEROFCARTS Gone Wild Join Date: Feb 2009 Location: Not sure yet Posts: 500	Re: Bad Battery It is best to match brand and age when dropping in a used battery. But sometimes ya gotta do what ya gotta do

03-23-2010, 09:23 PM	#8
golfcarfixer Gone Wild Join Date: Sep 2009 Location: Forest City N.C. Posts: 2,660	Re: Bad Battery Gorhad I have 5 exides and 1 trojan in my cart but they are all the same age and they have been workin fine for 3yrs. now.

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