Optional lithium ion battery
11-03-2009, 02:16 PM
#2
Rennlist Member
Gotta say, that looks pretty cool. Not sure if it's $1,700 cool, but cool nonetheless...
11-03-2009, 02:31 PM
#5
What I don't understand is won't a lightweight Braille battery (as low as 11 lbs 80z) work just as well and save you a boat load of money in the process ($149 vs $1,700)?
Not my photo
Not my photo
11-03-2009, 02:45 PM
#6
Rennlist Member
Although the price is high and I would never buy it if it was on Autozone's shelf....I find it ironic to complain about the $1700, when each on of the new owners is going to be shelling out almost ninty times as much money for the car itself.... Obviouly knowingly that there are much less expensive and perhaps comperable alternative to the RS like what Nissan ford or chevrolet sells
Thanks M Jones for the photo looks cool
Thanks M Jones for the photo looks cool
11-03-2009, 04:27 PM
#7
Addict
Rennlist Member
Rennlist Member
Worth it in every way.
Do not compare the Li-ion battery to a standard lead-acid battery like the stock one, or the Braille/Odyssey motorcycle batteries.
I have had quite a count of lightweight batteries, a Odyssey and three Brailles (which is a re-branded Deka).
Li-Ion batteries offer much more capacity, cranking amps and longer life. Very similar technology to cell phones, laptops. About 1/3 the weight for the same performance from a lead-acid battery.
Do not compare the Li-ion battery to a standard lead-acid battery like the stock one, or the Braille/Odyssey motorcycle batteries.
I have had quite a count of lightweight batteries, a Odyssey and three Brailles (which is a re-branded Deka).
Li-Ion batteries offer much more capacity, cranking amps and longer life. Very similar technology to cell phones, laptops. About 1/3 the weight for the same performance from a lead-acid battery.
Trending Topics
11-03-2009, 05:16 PM
#8
Still plays with cars.
Lifetime Rennlist
Member
The L-Ion battery is a non starter (literally) for me. Fall track days can see early morning temps at 32 deg F.
11-03-2009, 05:50 PM
#10
Worth it in every way.
Do not compare the Li-ion battery to a standard lead-acid battery like the stock one, or the Braille/Odyssey motorcycle batteries.
I have had quite a count of lightweight batteries, a Odyssey and three Brailles (which is a re-branded Deka).
Li-Ion batteries offer much more capacity, cranking amps and longer life. Very similar technology to cell phones, laptops. About 1/3 the weight for the same performance from a lead-acid battery.
Do not compare the Li-ion battery to a standard lead-acid battery like the stock one, or the Braille/Odyssey motorcycle batteries.
I have had quite a count of lightweight batteries, a Odyssey and three Brailles (which is a re-branded Deka).
Li-Ion batteries offer much more capacity, cranking amps and longer life. Very similar technology to cell phones, laptops. About 1/3 the weight for the same performance from a lead-acid battery.
Weight (being the most important) - The Porsche Li-Ion is 13lbs vs the 11.8 Braille - I'd say $150 is cheap for lightweight part on a Porsche.
Life - even if the Li-Ion last 3 times a lead battery, you can buy eleven Braille to one Li-Ion with a Porsche lable on it.
Peformance - If a battery starts a car, then performance is moot, however, as you mention the Li-Ion does have certain advantages.
I'm not trying to split hairs, the Porsche battery is very cool stuff. I just can't see why somone would spend more for something that is heavier, does not really pay for itself over its service life nor does it offer a usable performance gain. I just don't get it....
11-03-2009, 06:05 PM
#11
Nordschleife Master
Li-Ion batteries require a very stringent charging/monitoring circuit. They are also limited to a finite (a few hundred) charging cycles, and even though they do not have memory they prefer longer charging cycles. I'm not sure it is the best technology for a starter motor.
11-03-2009, 08:02 PM
#12
Addict
Rennlist Member
Rennlist Member
The water cooled cars have a lot of parasite loads (static loads) in the electrical system. These cars need batteries with enough reserve and capacity.
- The stock Moll has a capacity of 70 Ah and a reserve of 115 minutes.
- The common replacement (and lighter) Optima Red 35/75 has a capacity of 44Ah and a reserve of 90 minutes.
We cannot compare a Braille or Odyssey to a Li-Ion battery. In the warm California weather, my 11 lbs Braille needed to be plugged permanently to a trickle charger in the garage. Things got better with the 15 lbs Braille.
At a warm track day I had to unplug the engine cooling fan with the car sitting in the garage, otherwise the Braille would drain out and the car won't start.
A 11 lbs Braille only has 15Ah and 25 minutes of capacity. A 15 lbs Braille has 21Ah and 35 minutes of capacity, still not enough. When I was using my RS with a Braille, I was carrying a jump starter as part of my tools, because more than once the car ran out of juice. My Spec Boxster drained a brand new carbon Braille (15.5 lbs) in 6 days just sitting in the garage.
A 14 lbs Lithium battery (volthpreaks) has a capacity of 48Ah and 100 minutes, better than an Optima Red Top. I already ran an Optima red top in my GT3, and I didn't need to carry a jump starter.
For some, 22 lbs could sound like negligible weight, but consider the location of the stock battery. Also, it is cheaper (per pound) than lighter wheels, a lighter flywheel, PCCB, or carbon body parts.
I'm quite sure that Porsche went through enough testing with this battery before pioneering such technology into mass produced vehicles.
I hope they offer the option in all the Porsche road cars (except Panamera and Cayenne, the anti-thesis of lighter cars).
- The stock Moll has a capacity of 70 Ah and a reserve of 115 minutes.
- The common replacement (and lighter) Optima Red 35/75 has a capacity of 44Ah and a reserve of 90 minutes.
We cannot compare a Braille or Odyssey to a Li-Ion battery. In the warm California weather, my 11 lbs Braille needed to be plugged permanently to a trickle charger in the garage. Things got better with the 15 lbs Braille.
At a warm track day I had to unplug the engine cooling fan with the car sitting in the garage, otherwise the Braille would drain out and the car won't start.
A 11 lbs Braille only has 15Ah and 25 minutes of capacity. A 15 lbs Braille has 21Ah and 35 minutes of capacity, still not enough. When I was using my RS with a Braille, I was carrying a jump starter as part of my tools, because more than once the car ran out of juice. My Spec Boxster drained a brand new carbon Braille (15.5 lbs) in 6 days just sitting in the garage.
A 14 lbs Lithium battery (volthpreaks) has a capacity of 48Ah and 100 minutes, better than an Optima Red Top. I already ran an Optima red top in my GT3, and I didn't need to carry a jump starter.
For some, 22 lbs could sound like negligible weight, but consider the location of the stock battery. Also, it is cheaper (per pound) than lighter wheels, a lighter flywheel, PCCB, or carbon body parts.
I'm quite sure that Porsche went through enough testing with this battery before pioneering such technology into mass produced vehicles.
I hope they offer the option in all the Porsche road cars (except Panamera and Cayenne, the anti-thesis of lighter cars).
11-03-2009, 09:31 PM
#13
Rennlist Member
Join Date: Feb 2006
Location: Wishing I Was At The Track
Posts: 13,655
Received 1,878 Likes
on
970 Posts
The water cooled cars have a lot of parasite loads (static loads) in the electrical system. These cars need batteries with enough reserve and capacity.
- The stock Moll has a capacity of 70 Ah and a reserve of 115 minutes.
- The common replacement (and lighter) Optima Red 35/75 has a capacity of 44Ah and a reserve of 90 minutes.
We cannot compare a Braille or Odyssey to a Li-Ion battery. In the warm California weather, my 11 lbs Braille needed to be plugged permanently to a trickle charger in the garage. Things got better with the 15 lbs Braille.
At a warm track day I had to unplug the engine cooling fan with the car sitting in the garage, otherwise the Braille would drain out and the car won't start.
A 11 lbs Braille only has 15Ah and 25 minutes of capacity. A 15 lbs Braille has 21Ah and 35 minutes of capacity, still not enough. When I was using my RS with a Braille, I was carrying a jump starter as part of my tools, because more than once the car ran out of juice. My Spec Boxster drained a brand new carbon Braille (15.5 lbs) in 6 days just sitting in the garage.
A 14 lbs Lithium battery (volthpreaks) has a capacity of 48Ah and 100 minutes, better than an Optima Red Top. I already ran an Optima red top in my GT3, and I didn't need to carry a jump starter.
For some, 22 lbs could sound like negligible weight, but consider the location of the stock battery. Also, it is cheaper (per pound) than lighter wheels, a lighter flywheel, PCCB, or carbon body parts.
I'm quite sure that Porsche went through enough testing with this battery before pioneering such technology into mass produced vehicles.
I hope they offer the option in all the Porsche road cars (except Panamera and Cayenne, the anti-thesis of lighter cars).
- The stock Moll has a capacity of 70 Ah and a reserve of 115 minutes.
- The common replacement (and lighter) Optima Red 35/75 has a capacity of 44Ah and a reserve of 90 minutes.
We cannot compare a Braille or Odyssey to a Li-Ion battery. In the warm California weather, my 11 lbs Braille needed to be plugged permanently to a trickle charger in the garage. Things got better with the 15 lbs Braille.
At a warm track day I had to unplug the engine cooling fan with the car sitting in the garage, otherwise the Braille would drain out and the car won't start.
A 11 lbs Braille only has 15Ah and 25 minutes of capacity. A 15 lbs Braille has 21Ah and 35 minutes of capacity, still not enough. When I was using my RS with a Braille, I was carrying a jump starter as part of my tools, because more than once the car ran out of juice. My Spec Boxster drained a brand new carbon Braille (15.5 lbs) in 6 days just sitting in the garage.
A 14 lbs Lithium battery (volthpreaks) has a capacity of 48Ah and 100 minutes, better than an Optima Red Top. I already ran an Optima red top in my GT3, and I didn't need to carry a jump starter.
For some, 22 lbs could sound like negligible weight, but consider the location of the stock battery. Also, it is cheaper (per pound) than lighter wheels, a lighter flywheel, PCCB, or carbon body parts.
I'm quite sure that Porsche went through enough testing with this battery before pioneering such technology into mass produced vehicles.
I hope they offer the option in all the Porsche road cars (except Panamera and Cayenne, the anti-thesis of lighter cars).
11-03-2009, 10:32 PM
#14
I hear what you are saying about the braille, but they are used in daily drivers every day.
And many modern cars with excessive electronics will drain just about any healthy battery if left sitting for a week. I had to switch airport cars because of this very reason.
Like i said before, $149 vs. $1,700/$3,000 - I just don't get it....
11-04-2009, 12:32 AM
#15
We use a Braille battery in one of our race cars and it's like NJ-GT says, needs lots of tending to and is not real dependable. No way I'd run one in a street use car.
Phil
Phil