Stay away from Odyssey 680 as everyone on other forums ends up with dead batteries if the temp drops below freezing or you leave the car for more than 2 weeks. I also thought about the Deka ETX30 but my dealer is 70 miles away and it's an absorbed glass matt which I have no experience with. My battery is going dead (7 years old) so I am replacing with Duralast 8AMU1R ($104.99 8yr warranty) at Autozone or Interestate 51r for $102.00. Here is some additional information I pilfered from another site. If anyone wants to add to this thread, please do. I was not able to come up with anything really cost effective, but can tell you for sure that $1995 for a Braille is making the CEO a lot of money. I looked into making your own batteries (especially with lithium cells). Right now I am leaning toward getting a Big Crank EXT15L to save some weight. I just wanted to provide info of what I have found. Look at the pictures and select the correct one.Ĩ) Another couple of options are Yuasa and Gruber Power, these will work with the right adaptor post and are very reasonably priced:Ī pretty informative article here, at least look at the pics, it is funny the resemblence: The "L" refers to a reversal of the polarity. I don't think there is magic inside.ħ) Big Crank (Deka) has some models listed standard, and "L". I am thinking its the same with Duracell and Energizer. Battery basics are the same, there is a lot of marketing involved. I'm not recommending this, but just showing what a $300 battery has internaly is not all that different. Here is a battery that will crank over your NSX just fine at $25: I saw many accounts of various racing forums of people using these, but they do not take vibration as well. I don't feel the MJ is necessary, but some may disagree and can chime in.Ħ) The performance of these batteries can be had for as little as $25 using UPS batteries. Just as the NSX radiator stays cool, so does the battery. In a mid-engine car, this is not so much an issue. The MJ units keep more heat away from the internals. One of the main culprits in killing battery performance (like radiator performance) is heat. The metal jacket is to protect the battery, not to protect the environment the battery is in. You can adapt a standard 680 by buying an SAE post. the batteries can be bought in various iterations. These are all enersys batteries.ĥ) Odyssey terminology. A lot of performance shops sell DynaBat which is purchased from Hawker and sold for more money. Enersys sells the same battery under the "hawker energy Genesis" brand for less money. You have to read their CCA's.Ĥ) Odyssey is made by Enersys. Braille lists PULSE CCA's on their website. The Dekas are sold under many other names as well. Both Big Crank and Deka can be had for a lot less than the matching Brailles. All manufacturers say that their "internals" are different, but I have seen some internals and they look identical to me. They are made by Deka, rebranded and sold for A LOT MORE. at this point, I really feel braille is severely overpriced. Many companies have multiple websites and multiple names for the same battery (and multiple prices).ģ) The two best known brands: Braille and Odyssey. The specs are manipulated wildly at times, there is no real standard. There are a handful of battery manufacturers, everyone buys from them, then re-badges and sells for whatever they want. You can save around 15-20 pounds of weight instantly by changing the battery.Ģ) The battery world is a big scam. These are random:ġ) You can get away with a very lightweight low power battery in the NSX if you don't have a lot of aftermarket stuff, drive your car frequently, and don't live in a severly cold climate. I am sure some will disagree with some of my statements, I am not saying any of this is 100% fact but I have read A TON on this subject before coming to these conclusions. I have spent close to 8 hours researching batteries, and wanted to share much of what I found, which is not always clear on previous threads.
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