Does size matter ??
Burning Brakes
Joined: Mar 2003
Posts: 1,156
Likes: 2
From: Arlington VA
You want the Optima that is specified for the C5. I believe it is the 75/35. I have one in mine and it drops right in using the OEM hold down bracket. You may want to go ahead and put a battery mat underneath for added protection. I got mine from Griot's garage. Good luck.
Racer
Joined: Apr 2001
Posts: 287
Likes: 0
From: Plano, Texas, USA TX
Originally Posted by Vetteran
Me too!
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Team Owner
Joined: Jan 2006
Posts: 58,551
Likes: 95
From: The warm part of Anger Island
St. Jude Donor '09
a 34/78 with a battery mat worked fine for me in my C5 and Trans-Am. Unless they come out with something much much better, the same battery is going back in when the two I have now go to the recycle bin.
Unless they come out with something much much better, the same battery is going back in when the two I have now go to the recycle bin.
Le Mans Master
Joined: Dec 2001
Posts: 7,787
Likes: 6
From: Winchester TN
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St. Jude Donor '03-'04-'05-'06-'07-'11
Hi RWVH -
Either will work -
I opted for the higher CCA version, and it bolted right in.
I really only bought the optima for the look, and it has generally gotten good reviews here on the forum.
I never had one of those in any of my other cars and good old fashioned wal-mart batteries will work just fine - but they do not look as good in the engine compartment. JMHO.
best regards -
mqqn
Either will work -
I opted for the higher CCA version, and it bolted right in.
I really only bought the optima for the look, and it has generally gotten good reviews here on the forum.
I never had one of those in any of my other cars and good old fashioned wal-mart batteries will work just fine - but they do not look as good in the engine compartment. JMHO.
best regards -
mqqn
Race Director
Joined: Aug 2003
Posts: 16,270
Likes: 30
From: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and
St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-‘18-'19
NCM Sinkhole Donor
It's the old story - if a little bit is enough (75/35 720 cca), then too much is just right! (34/78 800 cca)
Either one will fit, though the 75/35 is the specified size. That's the one I use and I've never had an issue - though I live in Arizona and I don't have issues with low temperatures. High temperatures are a big issue, and are actually much harder on the life of the battery than cold weather.
If there was an easy and elegant solution to relocate the battery out of the engine compartment, that would go a long way to prolong the battery's life. Heat is the enemy! I lived in chicago and routinely got 5-6 years out of my batteries. Here in Arizona - if you can go over two years, you are very lucky. I have no expectations on battery life here, with over 100 days of 100 degree+ outside temperatures. Imagine what the underhood temperature is when the outside temps are 115 - 120, the pavement temperatures are reading 160 degrees with a closed up engine compartment, with minimal air flow around that battery. It's no wonder they die after two years!
Either one will fit, though the 75/35 is the specified size. That's the one I use and I've never had an issue - though I live in Arizona and I don't have issues with low temperatures. High temperatures are a big issue, and are actually much harder on the life of the battery than cold weather.
If there was an easy and elegant solution to relocate the battery out of the engine compartment, that would go a long way to prolong the battery's life. Heat is the enemy! I lived in chicago and routinely got 5-6 years out of my batteries. Here in Arizona - if you can go over two years, you are very lucky. I have no expectations on battery life here, with over 100 days of 100 degree+ outside temperatures. Imagine what the underhood temperature is when the outside temps are 115 - 120, the pavement temperatures are reading 160 degrees with a closed up engine compartment, with minimal air flow around that battery. It's no wonder they die after two years!
Racer
Joined: Apr 2001
Posts: 287
Likes: 0
From: Plano, Texas, USA TX
Originally Posted by rws.1
3 1/2 years is not that great for a premium battery...
Do you let it discharge a lot?
Do you let it discharge a lot?
Melting Slicks
Joined: Jun 2001
Posts: 3,123
Likes: 3
From: Orland Park Illinois
St. Jude Donor '06-'07
Originally Posted by rws.1
3 1/2 years is not that great for a premium battery...
Do you let it discharge a lot?
Do you let it discharge a lot?
Wish my Redtops lasted that long...I went thru 3 of them in 4.5 years. Never again..
