Thanks for the help everyone!!! I will be buying something this week and ALWAYS appreciate the help.

 

Hey Tony, About 3 years ago I put new optima red top in my 2005 GT. When I traded in the 2005 over a year ago, I transferred the optima to my wife's 2006 V6. It's the best battery I've ever owned. When my SGT goes out of warranty and needs a battery, I'll definitely buy another optima. -Steve

 

Hey thanks Steve, I appreciate it... Will be making the swap hopefully this week.

 

I've got the same Deka battery as the OP in this thread and I've had no problems with no-starts or faster than stock spontaneous discharge:
http://s197forum.com/forum/showthread.php?t=18503

I'm in desert AZ so I have no real 'cold cranking amp' demands. The brass terminals from Summit were backordered and expensive, but I like the light weight.

 

I see everyone talking about the batteries they have bought like the Optima , but I would like to know is the what the part # is for the battery they are using . I called my local battery dealer and they told me they dont have a direct replacement in the Optima battery for the new body Mustangs , so if someone has found a Gel or dry battery that is a bolt in size please respond with a part #

Thanks


Update Just found the Optima part# online , for those who want to know , the red top is a 35 , and the yellow top is a d35 .

 

Thank you so much...

 

I have just changed out my battery after 5 years with the original. These cars in my opinion are under powered as far as batteries go. Before the site went down a few years back there was a bunch of threads about the battery being dead after a couple of weeks of sitting with no trickle charger. There are a few parasitic drains in our cars including the stereo, fuel injection , alarm system that are all drawing power when the car is off. My battery was not giving me any problem but I figured it was time for a new one.

I first considered the the Optima but after reading about a lot of quality issues and how with the Odyssey you get the best of both worlds, so Iwent with an Odysee battery. They recommended a 1200 MJT for our cars, and the only reason that was recommended is because that is what fits best in the hole! I wanted much more power and I love the service life and military specs. So with some very minor modification, I was able to fit a PC 1500 in our tray and it came out perfect. the Odysee is more money for sure, more weight because I went with the PC1500
A lot of info on their site, i learned a lot talking to their engineer also.
I bought 4 of them in total, so i got a pretty good deal

 

I've had an Odyssey PC680 in my '08 Mustang for 3-4 months now, and it has performed flawlessly. The Mustang was sitting without being started (and no battery maintainer on it) for 3-4 weeks in July/August while I was on vacation, and it fired right up without hesitation when I started it this past Sunday. Significant weight savings over stock. I had the even smaller and lighter Odyssey PC545 (that used to be in my Miata) in my '01 Bullitt this year before I sold it, and it worked great too.

 

I just put the PC 680 in my Harley, don't you think that is a little small for the Stang!

 

Actually I was thinking it is a little big and heavy and will probably swap the smaller PC545 into the GT when I get a chance.

 

What do you have in that this a Remington shaver for a motor

 

I always did want one of these in carbon fiber...

http://www.braillebattery.com/

 

Braille compact battery, unless you're gonna power some huge subwoofer bs

 

A good friend of mine gave me some good advice. Choose a battery you know you will be able to replace without having to order a new one. Really all it means is if something happens while you are away from home be sure you can go somewhere to get a new one. My stock battery gave out on me and i did not have the cash at the time to buy an optima so i just went down to autozone and picked up one of their duralast batteries. The next day the battery was dead again so i took it back and got another one and have not had a problem since.

The Braille batteries are nice, but if it goes out on you somewhere, how are you going to get another one? You are going to have to sit an wait for a new one to come in the mail. I also decided against the optima because most of the places down here would need to order the optima with the specs for my car.

 

Your "good advice" only applies if a person hacks their battery tray up or puts some sort of custom mount in to use a smaller, lighter battery. I've done neither, I'm still using the stock battery cables, tray, and hold-down with my little Odyssey PC680. If I had to put a stock battery back in for whatever reason, it would only take a few minutes with common hand tools.

Even if I did hack up my battery tray and/or do something custom with the hold-down and cables, there are still tons of places that sell small lightweight AGM batteries (like Walmart for instance) if I needed a replacement out on the road somewhere. It simply isn't much of an issue. Heck, I could put in a $25 lawn mower battery in to get by if I had to with little effort.

Another thing about the Braille batteries, they really aren't anything terribly special. They are just rebranded with some flashy marketing and stickers on them. You can get the same exact battery under a different name for much less. There is nothing wrong with a Braille IMHO, but you can get the same size (and weight) battery for a lot less money at a lot of places, they are relatively common sizes.

 

Optima is overpriced sh*t. The only good part about Optima is that it is a VRLA AGM battery. Go to Sears and pickup a DieHard Gold or a DieHard AGM for $200. The DieHard AGM is superior to the Optima but uses the same VRLA AGM technology without sacrificing capacity.

The Optima uses spiral wound cells, and it is a Group 34 battery (tiny, very small capacity). There are empty spaces between the spirals which aren't being used for capacity (waste of space). A DieHard Gold is a traditional flooded lead acid battery that is of high quality, while a DieHard AGM uses flat AGM plates to maximize capacity.

Thousands of Insurgent killing machines in Iraq and Asscrackistan use AGM batteries. The only negative aspect of these AGM batteries is the cost and the fact they don't operate well at around -40 degrees or colder.

 

Thanks guys, I got a really good deal on an interstate (I believe) from my Performance shop... It's not my 1st choice but they cut me a next to nothing price since they were doing work on my car at the time...

 

This.

Braille if you're really serious about saving weight. Optima if you want a **** solid battery.

 

Unless you are drag racing, the weight of the battery should be a non-issue.
If you want a really solid no-holds-barred battery, forget the puny Optima. Get a Group 8D AGM:

http://www.westmarine.com/webapp/wcs...4&ci_sku=28901

160 lb, 225-270 Ah capacity, easily 5-6 times the capacity of typical automotive batteries, about 2 times the capacity of the 12V batteries used in HMMWVs and M1 Abrams. We use the 8D's in large Class A vessels.

Drop a 8D in the trunk of a GT, do the battery relocation mod, and you're good to go.

 

I'm sorry but if you're serious about saving weight, then you're obviously racing. And you don't need some super awesome special marine battery to turn over a god **** 4.6 modular engine. Buy something you've actually heard of.