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2/24/14 2:27am - Original Message: 'Battery Question'
tinbender
Former Member
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edgwood, MD - USA

Vette(s):
1975 convertible,with the hard top and power streering.it a 350 L48 with auto trans. the color is light blue.

Joined: 11/1/2007
Posts: 736
(1) this is the second battery in as many years...when tested they tell me it has a bad cell. Any ideas on what to check that could be causing this? (2) Can the battery lose it charge by not being hooked up in the car....both positive and negative cables are unhooked.
                            


|UPDATED|2/23/2014 11:27:43 PM (AZT)|/UPDATED|
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2/24/14 10:32am - Reply: 'Re: Battery Question'
Gunslinger
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Frederick, MD - USA

Vette(s):
1969 convertible L71 427/435 4-speed black interior

Joined: 9/8/2003
Posts: 3398
Yes...batteries can be defective.  A battery loses its charge over time even if not connected.  If there's a defect in how the battery was made, connections between cells can break.

What kind of battery is it?  From experience and that of others Optima batteries seem to not do well if not kept charged.  If taken care of Optima batteries will last for years but if they aren't maintained seem to have a short life...more so than standard design batteries not maintained.

Is the top of the battery kept clean?  You can have current running across the top of the battery between the terminals if there is any kind of dirt there.  

You might get your battery warranty adjustment in cash and try buying a battery elsewhere.


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Poet...Mystic...Soldier of Fortune. As always...self-absorbed, adversarial, c o c k y and in general a malcontent.

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2/24/14 12:18pm - Reply: 'Re: Battery Question'
dskopp
Former Member
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1956


Well, you dummy!!  What are u doing??  look for nicks in your battery cables!!!

Dan da Nan



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2/24/14 2:30pm - Reply: 'Re: Battery Question'
C17Flyer
Former Member
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Charleston, SC - USA

Vette(s):
1979 Silver w/oyster 350/290 crate motor

Joined: 8/5/2013
Posts: 11
Keep mine on a Battery Tender all the time, always stays charged and always starts.
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2/24/14 2:33pm - Reply: 'Re: Battery Question'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19449
ALL batteries "self-discharge" over time. How much time is the question. If it was tested and they determined it had a "dead" cell, it's no good. As Bruce says, defective batteries can happen. Bad assembly, rough handling, etc can cause internal problems.
Get a new one, and a battery tender type charger, one that puts out less than 1v is best. Keep the tender hooked up, and the battery should survive much better. Jimmy can give more info, iffin he sees this thread. Wink


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Joel Adams
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2/24/14 2:46pm - Reply: 'Re: Battery Question'
F4Gary Gold Member
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Grapevine, TX - USA

Vette(s):
1972 LT-1 convertible with factory air.

Joined: 8/26/2006
Posts: 862
I bought one of these at the Autorama last week and so far it has resurrected my generator battery and my lawn tractor battery.  Invented by a rich computer geek out in silicon valley to maintain the batteries in his car collection.

http://saveabattery.com/

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2/25/14 2:52am - Reply: 'Re: Battery Question'
HighDesertDave
Former Member
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Carson City, NV - USA

Vette(s):
Numbers matching 1972 350 4 speed, silver pewter body with blue interior

Joined: 12/4/2013
Posts: 239
I've got battery tended 60 month batteries cranking strong at 8 plus years! 2 of them in fact....amazing what these little gems can do for ya.

Now, you'd probably notice this on yours but I've had a cracked battery slow leaking acid that of course dropped its cell. Brand new battery. Someone mishandled it somewhere before I bought it. Juts a pinhole leak but it killed her. My problem was it was in an RV under the step on a wood board which soaked up the liquid. It took a while for me to notice the wood was damp.

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My Christmas present to ME! Bought Sat 11-30-2013. 72, 350 4 spd, Silver with blue interior...Can't you just hear Pablo Cruz playing in the background?

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2/26/14 12:00am - Reply: 'Re: Battery Question'
stingrayjim jr Lifetime Member
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SHELBYVILLE, TN - USA

Vette(s):
1976 L48 auto

1978 L82 4speed

1994 LT1 6speed

Joined: 7/5/2002
Posts: 3934
Joel is correct as is Gunslinger, all batteries will 'self discharge' in time, connected or not.  Moreso if connected, especially in today's cars, as there is a key-off drain with the onboard electronics, or even the radio clock and station settings memory.  As for your battery having a bad cell, that can happen, as they are built by machines built by man... a fully charged battery can sit disconnected for about 5-7 months before discharging enough to not be effective to start an engine.  If connected in a vehicle, that might be shortend to maybe a month depending on what might be utilizing the power....
 
A battery tender will help maintain a battery, however if you do store your car during the winter, if you fully charge it up before storage, unhook the cables, and maybe recharge it again 3 months into storage, you should be ok...  the tender on the otherhand, you will still need to make sure the battery is charged up, and that if you have a battery in which you can check the water level, do so. Popping the caps on the battery and taking a flashlight to look down the wells you will see the fluid and just under the surface you'll see the plates in the battery.  The wells have a little projection from the top of the battery case and project downward about 1/4-3/8 of an inch, if you should need to add water do not fill it above that projection, as you could risk the chance of the fluid 'boiling' out of the cap while it charges, either with the alternator or a battery charger.  Reason i mention this is that with the battery tender if it is connected up constantly, you might loose fluid... and if there is fluid lose, there will be a potential for a battery failure...  Yep, a battery tender under 1 amp , usually they run about .5 to .75 amp( or 500 milliamp to 750 millamp)
 
 


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StingrayJim
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Stingray's '76                             StingrayJr's '78                           Lil Red '94

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