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Optima batteries [Merged 10-6]

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logic

20+ Year Contributor
921
35
Jun 11, 2002
Berkeley, California
Hi,

I've been doing a little battery research. I've settled on Optima, based on comments I've seen regarding them and the fact that they're a sealed setup. I'm now looking at the various versions of batteries that they produce, and I've noticed very little difference (from reading over their techinical specifications) between their various "colors" (red for engine use, blue for marine, yellow for deep cycle applications). For reference, here are links to the specs they publish for each major type of battery:

The "Red Top 34" engine starter battery:
http://www.optimabatteries.com/products/pdf/34.pdf

The "Blue Top 34" dual-terminal marine starter battery:
http://www.optimabatteries.com/products/pdf/34M.pdf

The "Yellow Top 34" dual-terminal deep cycle battery:
http://www.optimabatteries.com/products/pdf/D34.pdf

My question, then, is simple: what's the difference, besides packaging? The marine battery literature makes claims about not discharging as much over time and recharging faster, but that would seem to be about it between the red and blue (the yellow has a few obvious differences, such as resistance and power output). Am I misreading, or is there really very little real-world difference?

For the curious: the reason I'm asking is because I'd like to be able to run the blue-top to match the rest of the underhood setup (along with any advantages that might come from the discharging characteristics; it sounds like the perfect setup for a car that's stored over winter, for example). That's the kind of eraser-head riceboi I am. :)

(I was a little unsure of whether to post this in the Basic/Newbie forum, or in the 2.0 Turbo Performance forum. Mods, please feel free to move if you think this is too basic.)
 
The red top would be used as a direct replacement for your current car battery. Yellow would work best in a situation where you're "adding" an extra battery, say in the trunk for a sound system.
 
i ended up going with a yellow. i called optima they said that would be the best for mounting the battery in the car to replace the one under the hood and w/ a stereo and alot of accesories.


i went to the local car audio shop today and bought a 140A braker to. was only $30. and i ran some welder wire close to the same as 4 ga(but less then half the cost and more flexable)

so was an easy $75 mod minus the $170 battery LOL.
 
The guy who I am ordering a red top battery from, sasys he shoes no listing for my engine bay. He told me I need to know the dimensions of the battery I will be getting from him.

Can anyone get me a model # or tell me the dimensions of the battery? I'd measure mine but it is in the shop right now.
 
Here's a picture of the battery mount. Just needs to be polished. :)
24180Battery_Mount.JPG
 
I like your battery tie down very nice and neat. The battery in the pic is that the smaller version of the red top? Im going to have to modify mine. When i went to get my Red Top put in the started tightening the bolt on the stock battery tie down that is mounted on the left corner of the engine bay on the fender well the bolt stripped and then shredded right off. a very clean cut, he went inside and got one of those plastic peices of crap that dont work for $-hit and told me that would do it. i asked him to get me the number to the corporate office and they thought it wasnt worth their time to put up with that question(im guessing) and never returned my call. I need to call him back. So dont get the plastic adjuster it sucks.!!
 
Thanks! I want to drill some swiss cheese holes in it, but it might make it weak.
I agree I've seen the adjustable plastic tie down, and it looks very weak.
The battery I have is an Odyssey. It won't leak, and is about 22 pounds. (Not like I was trying to reduce weight)
 
what did you all have to do to get a red top to fit and use all the factory tie downs, covers etc

also, i think the red top is about 200CCA more than stock, will there be any issues with this for a stock ignition system?

basically red top owners please reply and share your experience, especially if you have a 97-99 thanx
:thumb:
 
OK, First... There are 2 commonly sold "RED TOPS". One is a group 34-78 that is the larger one. There is also a smaller one that is a group 35-75. The 35-75 will fit right in either a 1G or a 2G.

Second... I know this can be confusing to some, but, the available CCA in a battery is just that. AVAILABLE. If it had anything to do with how the car would run, the alternator would not have any amperage ratings due to the battery amperage would be much higher. Once the battery is done starting the car, the alternator takes over. The purpose of this is to provide power for all required systems and accessories while the car runs, and to keep the battery charged for the next time you need to start the car.

In short... get the 35-75 group size (and) no, the CCA will not affect anything adversely.

Rich
Forced 4:dsm:
 
Any clever ideas to securely tie down an Optima Red Top battery in a 2G turbo?

The stock tie-down keeps it held down pretty good, since the battery fits snugly in the tray - it ain't going nowhere.

But, thing is, the battery is much thinner than the stock battery, so there's now a gap between the battery and the plates of the tie-down bar (the ones which stop it sliding side-to-side).

Although it doesn't move at all when I yank on it, I'm afraid autox and track event techs aren't gonna like the looks of that gap.

How did you 2G turbo owners secure your Red Tops?
 
measure where the brace has to be. Strip the paint off on one side and break off/cut off the bracket. Take it to the local muffler shop and hand the guy $10 or maybe even ask nicely and have them weld the bracket where it needs to be. Rough-up and paint the whole thing black again. ~$15 and it fits and looks and functions like new.
 
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