now it's your turn to help me !! NOW

silverhairdeere · 04-23-2009, 12:43 PM

sorry sometimes i like to bark just to hear myself

. the problem ,hadn't started THE 1989 G.M.C. 1/2 TON AUTOMATIC WITH 5.7 AND AIR , NO EXTRA POWER OPTIONS . in about 2 weeks and bingo it was nearly dead charged up to about 12.25 volts (multi-meter) did the test light between the pos cable and battery thing hardly lite up at all (light drain) so charged it up to 12.50 volts , un hooked both cables waited overnight checked the volts on the unhooked battery 11.55 volts . is this normal or is my bought in sept 08 battery(rural king) going bad ? is their another test to see what the drain is on a battery other than a test light . if so what should a normal drain be ?

shd

mudseeker · 04-23-2009, 01:26 PM

a good battery should not loose a charge like that. have you tried to clean the battery case and terminals. a dirty battery will loose voltage.

silverhairdeere · 04-23-2009, 01:58 PM

both cables were unhooked over night and it still almost droped a full volt from 12.50 to 11.55 .

shd

leolkfrm · 04-23-2009, 05:48 PM

take it back and get a replacement asap before the full replacement warranty goes out

crabtruck · 04-23-2009, 09:33 PM

That battery is toast, you used the perfect test to prove it.
I wouldn't depend on a battery below 12.5v, nor keep one below 12.25v.
For that test a "12v battery" is functionally dead at 12v.
Remember, 12v name comes from the uncharged value of cells,
most of my batts will sit at 12.75v after a couple days disconnected.

Possible causes include cracked case or low electrolyte,
so check for those before bringing in for warrantee.
Damaged plates are most likely caused by low electrolyte
or continous overcharge.

If it was originally parked with a poor charge, then sat a long
time with maybe a dose of cold weather, that could sink it.

merlin5577 · 04-23-2009, 09:47 PM

Quote:

Originally Posted by leolkfrm

take it back and get a replacement asap before the full replacement warranty goes out

+1.

Most automotive batteries have 6 cells each producing 2.1Volts when fully charged. It sould to me like one of the cells in your battery are dead/dying and it needs to be replaced. Sorry....

leolkfrm · 04-24-2009, 06:51 AM

SHD how is the new battery working??

silverhairdeere · 04-24-2009, 07:01 AM

can't find the receipt so far .

shd

leolkfrm · 04-24-2009, 06:27 PM

won't they take it back without? maybe as long as it's their brand they won't care

gmctrucks · 04-24-2009, 07:16 PM

Say buddy what I do my battery is a Interstate I take it to the distributor and they never give me a receipt they don't even charge to check it like a authorized dealer will. I hope this helps you out bud. Also the longer you take to take it to them the more there going to charge you to pro-rate it.
Good luck! GMC

04-23-2009, 12:43 PM	#1
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	now it's your turn to help me !! NOW sorry sometimes i like to bark just to hear myself . the problem ,hadn't started THE 1989 G.M.C. 1/2 TON AUTOMATIC WITH 5.7 AND AIR , NO EXTRA POWER OPTIONS . in about 2 weeks and bingo it was nearly dead charged up to about 12.25 volts (multi-meter) did the test light between the pos cable and battery thing hardly lite up at all (light drain) so charged it up to 12.50 volts , un hooked both cables waited overnight checked the volts on the unhooked battery 11.55 volts . is this normal or is my bought in sept 08 battery(rural king) going bad ? is their another test to see what the drain is on a battery other than a test light . if so what should a normal drain be ? shd

04-23-2009, 01:26 PM	#2
mudseeker Senior Moderator Join Date: Feb 2006 Location: michigan Posts: 6,374	a good battery should not loose a charge like that. have you tried to clean the battery case and terminals. a dirty battery will loose voltage. __________________ i'd rather be hunting

04-23-2009, 05:48 PM	#4
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	take it back and get a replacement asap before the full replacement warranty goes out __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

04-24-2009, 06:51 AM	#7
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	SHD how is the new battery working?? __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

04-24-2009, 06:27 PM	#9
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,300	won't they take it back without? maybe as long as it's their brand they won't care __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

04-23-2009, 01:58 PM	#3
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	both cables were unhooked over night and it still almost droped a full volt from 12.50 to 11.55 . shd

04-23-2009, 09:33 PM	#5
crabtruck Senior Member Join Date: Jul 2007 Location: on your 9 Posts: 3,364	That battery is toast, you used the perfect test to prove it. I wouldn't depend on a battery below 12.5v, nor keep one below 12.25v. For that test a "12v battery" is functionally dead at 12v. Remember, 12v name comes from the uncharged value of cells, most of my batts will sit at 12.75v after a couple days disconnected. Possible causes include cracked case or low electrolyte, so check for those before bringing in for warrantee. Damaged plates are most likely caused by low electrolyte or continous overcharge. If it was originally parked with a poor charge, then sat a long time with maybe a dose of cold weather, that could sink it.

04-24-2009, 07:01 AM	#8
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,184	can't find the receipt so far . shd

04-24-2009, 07:16 PM	#10
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,033	Say buddy what I do my battery is a Interstate I take it to the distributor and they never give me a receipt they don't even charge to check it like a authorized dealer will. I hope this helps you out bud. Also the longer you take to take it to them the more there going to charge you to pro-rate it. Good luck! GMC

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