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I went with the 'Optima Red Top' cause it's a gel battery and i was worried about the leak problem with AC Delco batteries which leak down onto the ECm right below the battery tray.
I went with a Sears Die Hard Platnium AGM deep cell because I let it sit sometimes for a few weeks between starts and I don't trust a battery tender. I also don't want another acid leak. It was expensive ~$190 but I have had great luck with Die Hards in all my other vehicles. One the few things besides tools that I still buy from Sears.
I went with the 'Optima Red Top' cause it's a gel battery and i was worried about the leak problem with AC Delco batteries which leak down onto the ECm right below the battery tray.
According to the Optima website, their Red Top and Yellow Top batteries are Absorbent Glass Mat (AGM) batteries and not gel batteries. There is a difference. Should the case of an AGM battery become cracked, it can sometimes leak a little from the acid that seeps from the glass mats. Nonetheless, AGM batteries are much less likely to leak than standard lead acid batteries.
This is one topic that always generates heated debate and I'm as bad as anyone
It depends on how you use the car.
All the latest batteries will be good. It was the old AC delcos that leaked but the latest ones have a redesigned case. I'd say if your car is a daily driver you can choose any battery and it'll be fine. The AGM batteries (Optimas) are good designs and will not leak (unless they are seriously abused) but are not tolearant if you let them discharge. This car has a tendency to do that. The Yellow Top will take more abuse than the Red Top as its a deep cycle battery. The downside is the Optimas are more expensive than standard lead acid types.
I've had both Red and Yellow Top and I have a Yellow Top in at present.
In any event, if the car is not used daily invest in a Battery Tender and you'll get many years out of whatever you choose.
Heres my thoughts on betteries. If you check the link I posted the spec for a replacement and the torque settings for tightening the battery leads.
I went with the 'Optima Red Top' cause it's a gel battery and i was worried about the leak problem with AC Delco batteries which leak down onto the ECm right below the battery tray.
My redtop has been in this C5 for quite a few years already and never let the owners down.
For those trying to decide between the Optima yellow top or red top, I checked their specs and the red top is almost 5 pounds lighter. So if weight savings is important to you, go with the red. The red also has better cold cranking amps too, if you drive in cold weather (like I do) then that might just be the difference between getting started on an extremely cold morning, or walking to work
They sell the Optima red top at Walmart here but it's $190! They do have a $25 mail in rebate right now though. But that's still a lot higher price than the Energizer car battery they sell there (which I currently have and am happy with so far) which is only about $70.
I went with a Sears Die Hard Platinum and I don't trust a battery tenders. It was expensive at $190 but I have had great luck with Die Hards and its guaranteed to not loose a charge for 2 + years just sitting. So if its not a DD and sits for a while you don't need a tender.
I can understand why some people may not trust a Battery Tender. That being said, I used one on my 1992 Vette and got 10 years out of the OE AC/Delco battery. Even I'm still amazed....