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Old 10-07-2003, 01:48 PM   #1
mindchatter
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Default Anyone replace their stock STi battery?

Hey folks. I just had my stereo installed in my STi and the install shop recommended I switch to an Optima battery. After doing some research it seems to be a good move. Here's my question(s): What is our "BCI Group Size Battery"? Is it "55" or "35"? I've gotten 2 diff't responses from 2 diff't dealers, although I believe "35" to be correct. 2ndly - has anyone installed an Optima Yellow Top in their STi and did you encounter any problems with the diff't +/- post positions? I'd heard that I may need to add a few inches to the starter cable, and that has me a bit freaked out. ANY HELP is GREATLY appreciated! Thx!
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Old 10-07-2003, 02:03 PM   #2
WRXThis
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I have an Optima in my WRX. It fits but you have to extend the positive terminal an extra couple of inches by removing a clip that holds the positive cable.

The OEM battery is CRAP!
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Old 10-07-2003, 02:23 PM   #3
RafalW
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Is it any lighter?
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Old 10-07-2003, 02:34 PM   #4
WRXThis
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Quote:
Originally posted by RafalW
Is it any lighter?
Don't know, never weighed it. The WRX did start much easier with the Optima in place.
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Old 10-07-2003, 03:01 PM   #5
mindchatter
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Hey WRXThis - thanks for the response. I actually ran my OEM battery dead by playing a CD for about 1/2hr, so I would completely agree with your sentiment on the stock battery. What all was involved with removing the "clip" on the positive side? Is there a part or extension I need to pick up 1st? Any help would be great, as I'm semi-mechanically retarded. RafalW - I believe the Optima is actually 20lbs or so heavier from what I've heard, but that's secondhand info....and WRX - is yours a Yellow Top??
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Old 10-08-2003, 01:33 AM   #6
rlavalle
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I've had no problems with the stock battery. I left the dome light in the WRX on overnight and she started fine. I also drained the battery by mistake when restoring it to stock from a heavily modified state (not sure what drained it). After a recharge, she again cranks like new.

If I do a battery change, it'll be a light weight one moved rearwards, either under the rear seat or in the trunk.

Russ
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Old 10-08-2003, 08:28 AM   #7
Obsidian
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Optima also offers an Orange Top battery that has the posts in the correct positions. IIRC it is not quite as powerful as the Yellow Top but is fairly close.

  --Matt
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Old 10-08-2003, 08:41 AM   #8
Mulder
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Hey guys, check the link in this thread. There is a reverse-terminal Red-Top that will drop right in without cable length issues, and the prices on the linked site are great. Too late for me, but anyone considering an Optima should check this out.
http://forums.nasioc.com/forums/show...hreadid=433287
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Old 10-08-2003, 10:43 AM   #9
Blue04Sti
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The red top would go with all the other red stuff under an STi hood - continues the theme
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Old 10-08-2003, 01:45 PM   #10
DanzBorin
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pm m@stro... he's in the car stereo business and swears by another battery... I can't remember the name now... but it's considerably cheaper than optima... he sells optima too, but says they are way too proud of them...
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Old 10-09-2003, 01:49 PM   #11
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can somebody please confirm what are the weights on these units compared to the stock one?
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Old 10-09-2003, 10:51 PM   #12
WhiteSTi
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I work at a Sears Auto Center and we just started carrying Optima red, blue, and yellow tops. The correct battery size is "group 35" and is about equal weight to the Diehard Gold. We have an old ass scale in the recieving dept. and I will take a Optima and a Diehard over to weigh and Ill get back to you. Sorry I don't have a Subaru battery to test.

In all honesty, you really cant go wrong with a Diehard Gold. It puts out 640 cca's (more than enough, unless you have a big stereo) and has an 8 year warranty. BUT, if you plan on doing the show thing, the Optima would be great for two reasons.

1)It's got a red top w/black bottom to match the engine.
2)It has dual posts so that if you have a stereo, you can run an invertor off cables coming from the side posts while the car remains hooked up to the top posts.

FWIW the Optima red would be the best if you bought it from Sears because WE give you an 8 year warranty with a 3 year free replacement (same as Gold). The Optima is $139.99 and the Gold is $79.99
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Old 10-10-2003, 09:59 PM   #13
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Go with the 51 R Optima yellow top battery (for a civic) to get the terminals to fit. This is what God told me to do to run my APS-FMIC to make it fit. The stock is too large, this battery is smaller. As for weight I have not weighed them. I do as God tells me
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Old 10-12-2003, 01:11 AM   #14
essogas
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Quote:
[i]If I do a battery change, it'll be a light weight one moved rearwards, either under the rear seat or in the trunk.

Russ [/b]
why? What will you put in it's place? If it was better to move it rearward someone might have done it.
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Old 10-12-2003, 04:03 AM   #15
rlavalle
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Better Weight Distribution.

Russ
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Old 10-12-2003, 12:58 PM   #16
MKIVSupra
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Quote:
Originally posted by WhiteSTi
1)It's got a red top w/black bottom to match the engine.
2)It has dual posts so that if you have a stereo, you can run an invertor off cables coming from the side posts while the car remains hooked up to the top posts.
The color of the battery denotes a different application. You don't want to just get the red top because it matches. For what the original poster wants it for I believe he would want the yellow top, deep cycle one. Last I checked the red top is just like a normal battery for passenger vehicles.

http://www.optimabatteries.com/usingOptima/index.asp
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Old 10-13-2003, 03:36 PM   #17
zacek
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I am actually looking for a smaller and lightweight battery, unfortunately the only betteries offered with these features are racing batteries which hold very little charge. The optimas seem to be as heavy AND bulky as the OEM ones.

Is there a battery in between in size and weight? I'm not looking for longer charge holding time I just want a better start which requires more amperage I think which any high performance battery offers.
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Old 10-13-2003, 11:18 PM   #18
Uncle Scotty
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Quote:
Originally posted by rlavalle

If I do a battery change, it'll be a light weight one moved rearwards, either under the rear seat or in the trunk.

Russ
There is no room for a battery under the rear seat for a battery.
An Odyssey PC680 fits under the passengers seat real nice, though
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Old 10-14-2003, 10:05 AM   #19
Ghostrider600
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I know someone put up the link, but for Audio equipment, you want the YELLOW TOP, not the RED TOP (despite what it looks like).


RED TOP
Quote:
In any vehicle or equipment that will use the battery only for Starting, Lighting, & Ignition requirements and has a properly working alternator, the OPTIMA Red Topô Starting Battery will perform extremely well, often providing up to two times longer life than conventional batteries. If the vehicle has few or no after-market accessories and uses a stock or upgraded alternator, the OPTIMA Red Top Starting Battery is the appropriate choice.
Remember, it is possible for the customer to have a completely discharged Red Top OPTIMA that will not start their engine; the advantages of the Red Top are that it can accept a rapid recharge and it will recover from discharge many more times.

To provide the customer the best OPTIMA solution, it is, necessary to consider both the application and the charging system before recommending the correct OPTIMA. For example, if your customer has a Ford Expedition with an after-market alarm system, which OPTIMA would you recommend? If the customer drives the car every day, the Red Top would be the correct choice, since the amperage drain will be nominal and the battery would be recharged on a daily basis. However, if the customer stores the vehicle for a long period of time with the alarm system engaged, you should recommend the OPTIMA Yellow Top, since the amperage drain over several weeks would damage a Red Top and reduce its life.
YELLOW TOP
Quote:
The OPTIMA Yellow Topô Deep Cycle Battery should be used in the following cases:

Starting applications in high-accessory vehicles/High Cycling Applications. Vehicles with computers, extra radios, electronic components, lights, winches, etc. will create excessive amperage drain that can damage a starting battery. Recommend the OPTIMA Yellow Top to provide fast recharging and longer life due to its' ability to cycle over 300 times.


Starting applications with low amperage draws. If your customer has a vehicle that sits unused for long periods of time, either OPTIMA will provide longer life due to reduced corrosion and sulfation. However, if the vehicle has an alarm, computer, or other low amperage drain, the Yellow Top will guard against deep cycling damage that can occur over long periods of time.


To increase Reserve Capacity or Run Time. You must first identify how long the customer needs to use the battery to run a vehicle, accessory, or motor before without recharging. Each OPTIMA Yellow Top Deep Cycle Battery is rated at 120 minutes of Reserve Capacity at a 25 Amp draw. If your customer is planning on using their OTPIMA in a trolling motor that pulls 50 Amps, they will only get 60 minutes of run time. If they require more run time you need to install multiple batteries in parallel. It is important to understand what the customer expects in order to provide them with the correct OPTIMA solution.

Remember:
Dark Gray Case means Starting TechnologyLight Gray Case means Deep Cycle Technology
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Old 10-14-2003, 03:14 PM   #20
armand1
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You can also check out the Exide Orbital batteries, which are similar technology to the Optima. The nice thing about both the Optima and the Orbital is that they will handle an occasional drained battery much better than the OEM. My two-year-old OEM couldn't be recharged enough to start the car anymore after I drained it once (storage for a month). The Optima and Orbital also lose their charge much more slowly than standard batteries; I've stored my Miata for a month or two at a time without any problem.
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