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Old Oct 2, 2020 | 09:14 AM
  #21  
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Originally Posted by knewblewkorvette
I use 34/78 size. I use them in the Corvettes as well as in my Ford Expeditions.



As you can see I have the need for a better battery
Thank you..... The Optima website, like others, call for the smaller D75/25 battery. The Sears Diehard Platinum I am replacing is 34/78 as well.

Last edited by tbar1963; Oct 2, 2020 at 09:19 AM.
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Old Oct 2, 2020 | 12:36 PM
  #22  
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I went through 3 red tops in 4 years. Total garbage. The yellow top has lasted 3 years so far.
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Old Oct 2, 2020 | 01:00 PM
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Originally Posted by Crosis
I went through 3 red tops in 4 years. Total garbage. The yellow top has lasted 3 years so far.
From Optima....
The REDTOP battery is what Optima considers their starting battery. ... The YELLOWTOPbattery, on the other hand, is Optima's high-performance battery. A true dual-purpose automotive battery, the YELLOWTOP battery is recommended for accessory-heavy vehicles, or for vehicles running a lot of battery-draining electronics.
The way I read this, Yellow top would be the better choice. I see a lot of people using the Red top, not sure why....
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Old Oct 2, 2020 | 01:33 PM
  #24  
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Originally Posted by tbar1963
I see a lot of people using the Red top, not sure why....
Red Top has more CCA, but less reserve
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Old Oct 2, 2020 | 02:38 PM
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Originally Posted by MY03C5Z
FYI - your Diehard IS an Odyssey battery. It was just relabeled for Sears. That joint venture ended 6-7 years ago though. Odyssey batteries are THE best AGM lead acid car battery on the market.
That's what I said - to get that battery you need to buy an Odyssey.

The JV ended because Sears warranty was so good (4 years full replacement) that many of them were bought for boats and campers and treated as deep discharge batteries - and they died within warranty. In cars, they were no trouble at all.
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Old Oct 3, 2020 | 10:09 AM
  #26  
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Originally Posted by jackthelad
That's what I said - to get that battery you need to buy an Odyssey.

The JV ended because Sears warranty was so good (4 years full replacement) that many of them were bought for boats and campers and treated as deep discharge batteries - and they died within warranty. In cars, they were no trouble at all.
Just purchased the Odyssey ODX-AGM 34-78, $305 ...ouch.!!!!!!
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Old Oct 3, 2020 | 10:45 AM
  #27  
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I've got the Die Hard AGM. I haven't had any issues with it in the 2+ years I've had it. I do see evidence of a previous battery leak in my car, but it wasn't from the battery that was in there when I purchased it. What is interesting is when I've pulled the battery do do diagnostic work, I've ended up with pull key, wait 10 seconds and a C1255 error that has never showed back up otherwise. I've left my car on a tender anytime it's been sitting for more than a week and it's treated me well, even with a pretty solid audio system in the car.

Anecdotal evidence from the forums is that Optima's quality has decreased significantly in the past few years. The more recent batteries have not held up as well as the older ones that made their reputation. Whether that's simply a case of complaints outweighing the positives, I don't know, but it was enough to sway me away from them.

Last edited by MikeyMcFly; Oct 3, 2020 at 04:03 PM.
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Old Oct 3, 2020 | 02:49 PM
  #28  
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The old USA-made Optimas were great batteries but the new ones made in Mexico, not so much. $307 for an Odyssey? Uhh, no.
I replaced the 8yr old Autocraft Gold AGM in my car, with another one 2yrs ago. Paid $125 and it does what it's supposed to. YMMV
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