Lightweight Battery
#1
Lightweight Battery
A dry cell battery is much lighter than a conventional "wet" battery. This is an easy mod for those who want all-out performance.
http://www.odysseyfactory.com
http://www.odysseyfactory.com
#4
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Originally posted by TerenceT
just make sure you have a jumper cable if you live in cold weather
just make sure you have a jumper cable if you live in cold weather
anyways, the difference (considering that for each cell in the car battery consists of a big lead plate and a lot of acidic water) in mass can be big... +30lbs in some cases. also, with a stand alone system like this (as used in race cars) you may be able to eliminate the alternator (i don't know, does the ignition run on DC or AC??) for more weight savings, etc.
Last edited by wakeech; 06-23-2003 at 05:20 PM.
#5
Originally posted by The Beav
how much of difference in weight does it make?
also why do you say that it'd be hard to start during the winter?
how much of difference in weight does it make?
also why do you say that it'd be hard to start during the winter?
but you are better off trusting Wakeech than I
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Originally posted by wakeech
...also, with a stand alone system like this (as used in race cars) you may be able to eliminate the alternator (i don't know, does the ignition run on DC or AC??) for more weight savings, etc.
...also, with a stand alone system like this (as used in race cars) you may be able to eliminate the alternator (i don't know, does the ignition run on DC or AC??) for more weight savings, etc.
#7
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I don't know how good dry cells are now days. But for 1 they are more expensive. 2. If they go dead, they don't last very much longer after that.
I had a car that after the first 4 years, went through 2 dry cell batteries. I finally went to a wet cell. And it's lasted much longer than the dry cells ever did.
I had a car that after the first 4 years, went through 2 dry cell batteries. I finally went to a wet cell. And it's lasted much longer than the dry cells ever did.
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I went to a drycell Odyssey PC680 (it's small) to make room for my intercooler. So far so good for ~4 months, it's saved me 15-20lbs over the stock Group 24 battery.
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honeslty i would just move the battery to the trunk and keep it wet. That way you can improve the weight distribution and free up a good amount of space under the hood
#10
OPTIMA batteries feature two thin lead plates wound into a tight spiral cell, with an absorbent glass-mat in between to hold the electrolyte solution.This unique design allows for more power and increased energy, resulting in quick, reliable starts. OPTIMA batteries are the first and only batteries to feature SPIRALCELL TECHNOLOGY.
· It'll last up to 2 times longer than other batteries.
· It can sit unused 3 times longer than other batteries.
· It is over 15 times more resistant to vibration than other batteries.
· It's nonspillable and can mount in almost any position.
· It provides constant performance quality keeping your battery running at the same level even as it's being discharged.
· It provides more power in the inital 1, 3, 5, and 10 seconds of the vehicle starting process than comparably rated conventional lead acid batteries.
http://www.optimabatteries.com
· It'll last up to 2 times longer than other batteries.
· It can sit unused 3 times longer than other batteries.
· It is over 15 times more resistant to vibration than other batteries.
· It's nonspillable and can mount in almost any position.
· It provides constant performance quality keeping your battery running at the same level even as it's being discharged.
· It provides more power in the inital 1, 3, 5, and 10 seconds of the vehicle starting process than comparably rated conventional lead acid batteries.
http://www.optimabatteries.com
Last edited by Supercharger; 06-27-2003 at 12:40 AM.
#11
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The Miata comes with this kind of battery. It's located in the trunk, on the right a little bit forward of the rear axle. It's pretty light and small. The original stock panasonic battery I didn't have to replace for 5 years. I replaced it with an optima battery and I'm on year 4 with it. I've been able to start the car when it was below freezing without a problem also. So longevity and durability issues aren't a concern. In fact I find it more durable then lead acid batteries and the lighter weight is a nice bonus. The con is the price, nearly $70.
Mazda went with this because lead acid batteries give off hydrogen. I guess they were worried that the trunk is too well sealed and there might be some danger. So putting a "wet" battery in the trunk could be dangerous... I have heard other Miata owners putting a wet battery in the trunk with no problems as well.
I don't recall where the battery for the RX-8 is located. Does anyone know and what kind of battery it is?
Mazda went with this because lead acid batteries give off hydrogen. I guess they were worried that the trunk is too well sealed and there might be some danger. So putting a "wet" battery in the trunk could be dangerous... I have heard other Miata owners putting a wet battery in the trunk with no problems as well.
I don't recall where the battery for the RX-8 is located. Does anyone know and what kind of battery it is?
#12
Optima is neither wet nor dry
it's gel and it's sealed so it doesn't give off any gas
also, it's the only battery you can mount which ever way, even upside down i think
i run optima red top in my wrx, definitly no weight saving, but CCA is better than stock
did i mention it's rechargeable?
it's gel and it's sealed so it doesn't give off any gas
also, it's the only battery you can mount which ever way, even upside down i think
i run optima red top in my wrx, definitly no weight saving, but CCA is better than stock
did i mention it's rechargeable?
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Originally posted by Jsuzuki
The original stock panasonic battery I didn't have to replace for 5 years. I replaced it with an optima battery and I'm on year 4 with it. I've been able to start the car when it was below freezing without a problem also. So longevity and durability issues aren't a concern.
The original stock panasonic battery I didn't have to replace for 5 years. I replaced it with an optima battery and I'm on year 4 with it. I've been able to start the car when it was below freezing without a problem also. So longevity and durability issues aren't a concern.
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The Odyssey PC1200 automotive version at 38.2 lb and 550 CCA is heavier and weaker than an Optima 35 (33.72 lb, 720 CCA).
Good thing I can whip out the rotary common sense to break down these nonsenses.
Good thing I can whip out the rotary common sense to break down these nonsenses.
#18
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Good thing I can whip out the rotary common sense to break down these nonsenses.
Ken
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Would the Kirkland R51 work with the Rx8? And does anyone have a link for a smaller battery tray? I made this mod with my FD and save probably 15 lbs.
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^^ was just faced with this situation, but chose to go with the pc925mjt over the pc680.
it can fit mounted on its side with a few minor modifications such as stretching the P+ cable and shimming the tie-down. future adjustments for a perfect fit seems inevitable tho...
not the best in weight savings, and CG isn't affected too much. but its a stronger CCA battery and requires somewhat minimal mods. its 24.5lbs actual.
it can fit mounted on its side with a few minor modifications such as stretching the P+ cable and shimming the tie-down. future adjustments for a perfect fit seems inevitable tho...
not the best in weight savings, and CG isn't affected too much. but its a stronger CCA battery and requires somewhat minimal mods. its 24.5lbs actual.
Last edited by TrochoidMagic; 11-06-2008 at 09:10 PM.
#24
Hi guys,
I am a little bit lost with all those battery. Mine went down yesterday and I need to buy a new one. I saw on all threads that the pc680 seems to be a good choice for a low budget, am I right?
I also saw on certain threads that I might have to modify something to make it fit. I'm a real noob in mechanic so I won't be able to do anything hard.
Is it necessary tto put a plate of wood like this under :
And isn't it dangerous? Is the heat bag necessary?
Thank you very much for your help!
I also saw that odyssey propose the pc1200mjt for 2005 rx-8 manual transmission, but is it really better for an everyday car? (not for tracking)
Thanks!
I am a little bit lost with all those battery. Mine went down yesterday and I need to buy a new one. I saw on all threads that the pc680 seems to be a good choice for a low budget, am I right?
I also saw on certain threads that I might have to modify something to make it fit. I'm a real noob in mechanic so I won't be able to do anything hard.
Is it necessary tto put a plate of wood like this under :
And isn't it dangerous? Is the heat bag necessary?
Thank you very much for your help!
I also saw that odyssey propose the pc1200mjt for 2005 rx-8 manual transmission, but is it really better for an everyday car? (not for tracking)
Thanks!
#25
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its funny that you guys trying to save that 20 lbs for a god damn street car but then you have to worry this and that and you even know that those battery does NOT even have enough juice to power the car.
and the pc1200mjt does not even saves any weight, and its weaker than a good lead acid battery. sad.
and the pc1200mjt does not even saves any weight, and its weaker than a good lead acid battery. sad.
Last edited by nycgps; 02-13-2011 at 02:25 PM.