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Old May 24, 2017 | 06:01 PM
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Default new battery?

Hi everybody,
Does my 1998 coupe garage queen with 19K miles need a new battery?
The battery is 8 years old. I always use a battery tender in storage in my garage, has never gone dead, no slow turn over, looks perfect. Terminals have absolutely 0% corrosion. I have had it out of the car and it is flat and square no bulges, clean as a whistle like the rest of the engine bay, perfect.
It is a direct OEM Delco replacement I installed from the original.
Would it be wise to replace it or under the present circumstances?

Thanks guys
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Old May 24, 2017 | 06:14 PM
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You can have it load tested at a parts store. If it still has all of its amps then there is no need to replace it. The salesman may try to convince you that you need a new one to get a commission.

I don't replace battery's until they won't take a charge any more or until they loose voltage from a dead cell.
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Old May 24, 2017 | 07:02 PM
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Have it tested and if it passes, keep it in the car.
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Old May 24, 2017 | 07:26 PM
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8 years old? I would replace it. They don't last forever and would you want it to die at the most inconvenient time? For peace of mind get a new one. Might save you money in the long run.
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Old May 24, 2017 | 07:28 PM
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Originally Posted by JR-01
8 years old? I would replace it. They don't last forever and would you want it to die at the most inconvenient time? For peace of mind get a new one. Might save you money in the long run.
Agreed...
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Old May 24, 2017 | 08:14 PM
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I have a Sears Platinum (AGM) installed in 2007. Still fine. I'm with Rob 02 - no point in replacing until you have to.
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Old May 24, 2017 | 08:23 PM
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Climate controlled environment and little use with a tender... its amazing how long a battery can last.
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Old May 24, 2017 | 08:38 PM
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No don't replace it, wait until you are out on a cruise at the local car show and it takes a crap. Everybody can come up to you and ask how old is the battery and when you say 8 years old it will give them a good laugh on you. Come on man it is the start of summer................

Last edited by T VETTE; May 24, 2017 at 08:38 PM.
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Old May 24, 2017 | 09:02 PM
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Originally Posted by jackthelad
I have a Sears Platinum (AGM) installed in 2007. Still fine. I'm with Rob 02 - no point in replacing until you have to.
Yeah, wait till it dies before you replace it. Batteries can fail anytime without warning. You never know where you will be when it happens. Why try to squeeze another year out it? That battery is on borrowed time.
Bragging about how many years you get out of a battery isn't worth it.
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Old May 24, 2017 | 10:07 PM
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one thing I would do if you haven't done it already, especially on an older c5, is take the battery and tray out and make sure it hasn't been leaking on the wiring and pcm... that can really ruin your day if it goes unnoticed and gets to the point where it starts causing electrical issues... I would also try to make something to protect the pcm and wiring in case of future leaks... as common of an issue as that is I'm surprised a vendor hasn't manufactured something to to protect it, maybe there is something out there but I haven't seen it

Last edited by StingrayRebel; May 24, 2017 at 10:07 PM.
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Old May 24, 2017 | 10:37 PM
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My Interstate that was installed in 2010 when I bought my car is always on a tender & looks like new, but when I did my testing with my Solar BA7 tester the CCA which was 650 new is now 440, and it also failed the other tests I did with the tester. Time to replace.
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Old May 24, 2017 | 11:29 PM
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I would have it load tested and would keep it if only doing short trips in town. If leaving on a major trip, I would definitely change it.
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Old May 25, 2017 | 08:01 AM
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At 8 years I doubt it would load test well but it might. I consider getting 8 years out of a battery a blessing. I can't see it lasting tremendously longer so if you want piece of mind then go for it.

I do most of my driving near home and have a jumper device so I tend to worry less.
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Old May 25, 2017 | 08:01 AM
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Originally Posted by neutron82
one thing I would do if you haven't done it already, especially on an older c5, is take the battery and tray out and make sure it hasn't been leaking on the wiring and pcm... that can really ruin your day if it goes unnoticed and gets to the point where it starts causing electrical issues... I would also try to make something to protect the pcm and wiring in case of future leaks... as common of an issue as that is I'm surprised a vendor hasn't manufactured something to to protect it, maybe there is something out there but I haven't seen it
I use this. Cheap insurance.


http://www.batterymart.com/p-battery-mat-black.html
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Old May 25, 2017 | 08:14 AM
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When I bought my c5 last year battery looked new tested good , no problem . First time I took my wife out for dinner , batt died ! I replaced it and no problems since but ...
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Old May 25, 2017 | 08:35 AM
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Originally Posted by T VETTE
No don't replace it, wait until you are out on a cruise at the local car show and it takes a crap. Everybody can come up to you and ask how old is the battery and when you say 8 years old it will give them a good laugh on you. Come on man it is the start of summer................
Yep.. Its a little like OEM tires (15 year olds)...but the tread looks new. As a distance runner...running shoes need to be changed....often

Last edited by runner140*; May 25, 2017 at 08:53 AM. Reason: add
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Old May 25, 2017 | 08:35 AM
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Originally Posted by msandym
When I bought my c5 last year battery looked new tested good , no problem . First time I took my wife out for dinner , batt died ! I replaced it and no problems since but ...
It amazes me sometimes. C5 owners will spend $2000 on new headlights or rims yet have a hard time replacing an 8 yr old hundred dollar battery.
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Old May 25, 2017 | 08:38 AM
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Originally Posted by JR-01
It amazes me sometimes. C5 owners will spend $2000 on new headlights or rims yet have a hard time replacing an 8 yr old hundred dollar battery.
ALSO... its a little like...why should I get an LMC5...I don't have any problems, codes ,messages etc.
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Old May 25, 2017 | 08:40 AM
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Originally Posted by runner140*
ALSO... its a little like...why should I get an LMC5...I don't have any problems, codes ,messages etc.
Yep. Why fix it if it ain't broke?........yet.
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Old May 25, 2017 | 10:02 AM
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I check my battery every year for 2 Items, first if it shows 12.5V or better after the battery tender has been off it for 12 hours. If it passes that I then have the reserved capacity checked and it has to be over 100, 120 on a new battery. It is the Reserved Capacity that will show how long the battery will last and how the parasitic drain has affected the battery. It is not uncommon for some one to purchase a new battery that has been sitting on the shelf for 1-2 years.
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