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Old Aug 31, 2020 | 02:10 PM
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2006 convertible 6L. I'm about to replace my second battery in two years, both batteries are from AutoZone and are DuraLast Gold. The first battery died at the one year mark and was replaced with the same battery (warranty, no charge). I keep the vette on a Deltran Tender Jr. all the time while the car is in the garage. The latest incident was driving over to my cousins house (about a 1/2 hour drive) with no issues. Stayed about 4 hours and the car would not even turn over, one click and no start, and the dash went black. Jumped the car and headed on home, volts reading 14.5 the whole way.and I had no issues on the ride to the house,. Put it in the garage turned it off and tried to restart, nothing. Anyway, time for a new battery, I would like to know any pros/Cons on replacing with an AGM style battery.or any other solutions you may have. Thanks in advance.
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Old Aug 31, 2020 | 02:16 PM
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I've had good luck with Optima Red and Yellow top. My current Yellow top is 7 years old.
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Old Aug 31, 2020 | 03:31 PM
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AGM style batteries are a-ok. Also, your Deltran tender will work just fine with AGM.
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Old Aug 31, 2020 | 05:38 PM
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Originally Posted by Slojack
2006 convertible 6L. I'm about to replace my second battery in two years, both batteries are from AutoZone and are DuraLast Gold. The first battery died at the one year mark and was replaced with the same battery (warranty, no charge). I keep the vette on a Deltran Tender Jr. all the time while the car is in the garage. The latest incident was driving over to my cousins house (about a 1/2 hour drive) with no issues. Stayed about 4 hours and the car would not even turn over, one click and no start, and the dash went black. Jumped the car and headed on home, volts reading 14.5 the whole way.and I had no issues on the ride to the house,. Put it in the garage turned it off and tried to restart, nothing. Anyway, time for a new battery, I would like to know any pros/Cons on replacing with an AGM style battery.or any other solutions you may have. Thanks in advance.
I have used DuraLast Gold for multiple cars over the years and found them as dependable as other brands. I'm certain Auto Zone batteries are manufactured by a well-respected battery manufacturer and sold through AZ. I have heard pros and cons concerning AGM style batteries (mostly in the RV community and debated on longevity vs. cost.

Bronk
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Old Aug 31, 2020 | 05:48 PM
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One major advantage to a deep cycle battery is no matter how many times it’s fully discharged it’s fully capable of full recovery. Normal car batteries once discharged will never fully recover.
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Old Aug 31, 2020 | 07:20 PM
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Originally Posted by Slojack
2006 convertible 6L. I'm about to replace my second battery in two years, both batteries are from AutoZone and are DuraLast Gold. The first battery died at the one year mark and was replaced with the same battery (warranty, no charge). I keep the vette on a Deltran Tender Jr. all the time while the car is in the garage. The latest incident was driving over to my cousins house (about a 1/2 hour drive) with no issues. Stayed about 4 hours and the car would not even turn over, one click and no start, and the dash went black. Jumped the car and headed on home, volts reading 14.5 the whole way.and I had no issues on the ride to the house,. Put it in the garage turned it off and tried to restart, nothing. Anyway, time for a new battery, I would like to know any pros/Cons on replacing with an AGM style battery.or any other solutions you may have. Thanks in advance.
My original (2005) OEM battery lasted 7 years. Was going strong when I just decided to change it out. My current Optimum Red Top has also been fine for the past 7 years & I'll probably change it out later this year. Both batteries have always been on a Battery Tender Plus whenever parked in the garage for more than a couple of days. Have never had a battery problem even when sitting for multiple days during some vacation road trips......SO.....I suspect you have some other problem in your electrical system. Losing 2 brand name batteries in only a year each, doesn't make sense. Before you continue just replacing batteries, I suggest a careful inspection of the electrical system to determine if there is some parasitic draw that is killing the batteries, despite being on the battery tender. You might also check to see that the tender is putting out correct voltage/amperage.
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Old Aug 31, 2020 | 07:28 PM
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2007 and on 5 years now with my current DLG, I have had pretty good luck with them. Always on a tender.
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Old Sep 1, 2020 | 09:21 AM
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Check your starter.
My 08 was killing my battery the past 3 years, tried everything, convinced there was some parasitic drains (which there probably is anyways) but finally figured out the starter was toast. Car would start when cold, NOT when hot. When they took out the original starter, solenoid was demolished, surprised it was even starting at all. Replaced starter and car runs and starts like a Champ now.
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Old Sep 1, 2020 | 10:18 AM
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Have the system checked for a parasitic drain. Something abnormal is going on un-related to just the battery. Some here on the Forum recommend removing the OnStar fuse because of a connection issue especially if you do not have an active OnStar account for some unknown reason.
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Old Sep 1, 2020 | 01:39 PM
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I too went with an Optima yellow for my Z06. It doesn't exactly fit right but it's been at least 13 years now, no issues and it goes dead or near dead often. I keep a $10 float charger on it most of the time.

I had an Optima red in my 2000 but after about 17 years, it finally died. I had no complaints really, was a great battery considering how long it lasted. I decided to go with an Oddessy as a replacement for that one. It's been 3 years now, no issues. The Oddessy is clearly superior in design with brass terminals.

Last edited by GettnBetter; Sep 1, 2020 at 01:41 PM.
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Old Sep 1, 2020 | 04:16 PM
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I went with an Odyssey battery for my GS since it's inside the passenger compartment. Being a very well made AGM battery, there is virtually no chance it will ever leak or out gas. I've had great results with AGM batteries in several vehicles. But the OP seems to have something more wrong with his Vette.
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Old Sep 1, 2020 | 08:48 PM
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It's a bit expensive but you can install a Duralast Platinum Battery H6-AGM Group Size 48 760 CCA . It is big and just barely fits -- that's what she said. No, seriously, it does just fit.
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Old Sep 1, 2020 | 08:56 PM
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How is the alternator?

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Old Sep 6, 2020 | 10:17 AM
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The battery was still under warrenty and Auto Zone replaced it for free. Started tracking down any bad connections and really didn't find an issue. I had an aftermarket Kenwood radio in the car from the previous owner, I pulled the radio out and replaced it with the original 2006 radio. Noticed good changes right away. 1) zero sparking when hooking up the battery, various weird electrical issues went away, and the radio is easier to read than the Kenwood (shiny cover, sun would glare out the face). Thanks for all the suggestions, I'll probably go with a gel battery after this one dies, hopefully 5-7 years from now.
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Old Sep 6, 2020 | 10:21 AM
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Originally Posted by Slojack
The battery was still under warrenty and Auto Zone replaced it for free. Started tracking down any bad connections and really didn't find an issue. I had an aftermarket Kenwood radio in the car from the previous owner, I pulled the radio out and replaced it with the original 2006 radio. Noticed good changes right away. 1) zero sparking when hooking up the battery, various weird electrical issues went away, and the radio is easier to read than the Kenwood (shiny cover, sun would glare out the face). Thanks for all the suggestions, I'll probably go with a gel battery after this one dies, hopefully 5-7 years from now.
If you have spark occurring when connecting battery you’re installing the negative cable first then the positive.
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Old Sep 6, 2020 | 02:04 PM
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I always put the negative cable on first. That way nothing bad will happen if you should contact metal on the car while tightening the positive cable. Not sure why connecting the neg cable first would cause a spark compared to the positive cable. Either way you are completing the circuit to the battery so should have the same effect.

I really messed this post up. I should have posted that I always put the positive cable on first. That way nothing bad will happen if you should contact metal on the car while tightening the positive cable. Not sure why connecting the neg cable first would cause a spark compared to the positive cable. Either way you are completing the circuit to the battery so should have the same effect. Thanks to the forum members that caught my incorrect statement.

Last edited by Slojack; Sep 6, 2020 at 08:55 PM. Reason: used the word negative when I meant to use positive.
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Old Sep 6, 2020 | 02:24 PM
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Originally Posted by Slojack
I always put the negative cable on first. That way nothing bad will happen if you should contact metal on the car while tightening the positive cable. Not sure why connecting the neg cable first would cause a spark compared to the positive cable. Either way you are completing the circuit to the battery so should have the same effect.
positive cable goes on first then negative to eliminate spark. Anytime the positive cable is installed second is you always get the spark. You never know if the spark can or will damage a circuit. It’s your car do what you see fit whether it’s right or wrong.

Last edited by saplumr; Sep 6, 2020 at 02:32 PM.
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Old Sep 6, 2020 | 02:32 PM
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Originally Posted by Slojack
I always put the negative cable on first. That way nothing bad will happen if you should contact metal on the car while tightening the positive cable. Not sure why connecting the neg cable first would cause a spark compared to the positive cable. Either way you are completing the circuit to the battery so should have the same effect.
You have that wrong. If you have the negative cable connected and you touch something with the wrench while tightening the positive cable you are going to have a big short. As long as the negative cable is disconnected you can touch anything metal that is connected to a ground (other than the negative post on the battery) without any problems. If you don't believe me give it a try. I would suggest you wear a face shield when you do.

Last edited by cdm747; Sep 6, 2020 at 02:34 PM. Reason: addition
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Old Sep 6, 2020 | 08:23 PM
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Not sure how I have it wrong. I should have said I always connect the positive cable first.

Last edited by Slojack; Sep 6, 2020 at 08:33 PM.
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Old Sep 6, 2020 | 08:26 PM
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Originally Posted by Slojack
Not sure how I have it wrong. I said I always connect the positive cable first.
According to post #16 that’s not at all what you said.
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