Shamus964

Just an FYI - posted on most of the other forums but not this one...

https://rennlist.com/forums/924-931-...=%24110+optima

fiskarflugen

DOes anyone know which battery is the right one for our cars? Do you also need any other parts like the holder?

Baltic964Cab

Type 35. Clamps right in. Positive and Negative terminals are in the correct location.

http://www.1st-optima-batteries.com/schema_35.html

http://www.1st-optima-batteries.com/...QYSog#redspecs

Shamus964

I'm not sure that the model '35' is correct.

I believe the conventional wisdom from my searches on this forum is that the 75/35 fits the stock location with the stock hold down. I confirmed today from Optima tech support that the 75/35 (which doesn't appear on their website), and the 75/25 are the same battery. I was told some of their retailers use the 75/35 name for the 75/25 battery.

I believe the straight '35' battery has the neg and pos posts swapped so it wouldn't work.

Bearclaw

The 35 is the one I've bought before. Fits perfectly, terminals in the right place, uses factory holddown.

The batteries themselves, regrettably, are pieces of pooh IMO.
I've had two. They apparently either last forever or die within the first few months. Seem to have a QA problem.
Uncle.

I have a plain old NAPA battery now, year-and-a-half, no prob. Bought it with a coupon for half the Optima price.

Shamus964

Good to know the 35 works also!

On the Optimas, I've heard from friends and read mostly good and little bad about them but I'll keep the receipt! I do know that I will prefer having the sealed battery vs. the vented one especially considering that the vent tube dumps directly over the A/C condenser which has been asserted by some lead to the early death of said condenser.

joey bagadonuts

FWIW, I have an Optima in my SUV and, in these brutal Midwestern Winters, it's performed like a champ!

pete000

I have never had any luck with Optima batteries, good luck gentlemen.

Nine11

Optima red top 75/35 and it's all good so far. You will need a special charger than can do gel cells.

DarrylH

I have a yellow top that has been flattened more times than I care to remember (while trying to find an elusive drain) and it's still working well at seven years old. I'd buy another in a heartbeat, unless something has changed in their production.

Baltic964Cab

Shamus964 - seems to me, my conventional wisdom from buying, installing, and using a type 35 Optima battery tells me it fits, and the posts are in the correct locations. Or, you can keep searching.

Shamus964

I think my post makes it clear I wasn't certain that the 35 wouldn't work but I thought perhaps you had mispoken when you said '35' rather than 75/35 as several folks have posted that they are using the 75/35. Obviously didn't want someone to pull the trigger on the wrong battery.

As you can see from the schematics the posts are swapped on the two batteries, so I'm assuming you were able to turn the battery around to compensate for this.

http://www.1st-optima-batteries.com/schema_35.html
http://www.1st-optima-batteries.com/schema_7525.html

Like I already said above in response to Bearclaw, it's good to know that the 35 works.

tbennett017

i have a Yellow-Top, works great. (in PDX, fwiw)

Shamus964

What? That's impossible - my research shows that yellow-tops don't work on dark colored 964's in rainy weather...

By any chance have the model for folks to order up if they want to?

Gus

OK - So what is the bottom line - Which battery do we get and are we going for a group buy???