OEM lithium battery
08-08-2012, 07:27 PM
#16
Addict
Rennlist Member
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Peter, look at the maintenance section on the Li-Ion battery manual.
It indicates when the battery has been damaged by exhaustive discharge, and how to determine the condition. It also provides info on the audible beep I had one time last year.
It indicates when the battery has been damaged by exhaustive discharge, and how to determine the condition. It also provides info on the audible beep I had one time last year.
Last edited by NJ-GT; 08-13-2013 at 10:18 AM.
08-08-2012, 07:44 PM
#18
Race Car
08-08-2012, 07:47 PM
#19
Race Car
08-08-2012, 07:47 PM
#20
Nordschleife Master
Losing weight is overrated.....I'll never be Erik size
Bought 200 lbs of lead weight, next time Erik in pits I will disassaseble his car and add weight
08-08-2012, 07:52 PM
#21
Rennlist Member
Thread Starter
Lol
Exactly
Relax. Erik just picked up trakcar 2 aka the lemon. He is 100+ pounds lighter so he needs to beat us by a full second to be concidererd the better driver. Ask Rad.
Relax. Erik just picked up trakcar 2 aka the lemon. He is 100+ pounds lighter so he needs to beat us by a full second to be concidererd the better driver. Ask Rad.
08-08-2012, 09:35 PM
#22
This charger has served me well:
It looks after the factory li-ion, a Braille and various others large and small, it "understands" battery chemistries and can resuscitate a depleted battery -- it has revived jet skis, snowmobiles, SUVs, wood-chippers, etc. It's also pretty small and comes in a weatherproof box with clips and a permanent pig-tail.
It looks after the factory li-ion, a Braille and various others large and small, it "understands" battery chemistries and can resuscitate a depleted battery -- it has revived jet skis, snowmobiles, SUVs, wood-chippers, etc. It's also pretty small and comes in a weatherproof box with clips and a permanent pig-tail.
08-08-2012, 10:03 PM
#23
Rennlist Member
Thread Starter
This charger has served me well:
It looks after the factory li-ion, a Braille and various others large and small, it "understands" battery chemistries and can resuscitate a depleted battery -- it has revived jet skis, snowmobiles, SUVs, wood-chippers, etc. It's also pretty small and comes in a weatherproof box with clips and a permanent pig-tail.
http://www.amazon.com/dp/B008MUHKLW
It looks after the factory li-ion, a Braille and various others large and small, it "understands" battery chemistries and can resuscitate a depleted battery -- it has revived jet skis, snowmobiles, SUVs, wood-chippers, etc. It's also pretty small and comes in a weatherproof box with clips and a permanent pig-tail.
http://www.amazon.com/dp/B008MUHKLW
08-08-2012, 11:20 PM
#24
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08-09-2012, 10:25 AM
#26
Rennlist Member
Thread Starter
Just checked Voltage after letting battery sit overnight. 10V.
Never beeped yet.
I think Porsche should give me a new one, most likely broke due to full discharge and that was due to a bad alternator wich they replaced under warranty with 800 miles on the odo..
Never beeped yet.
I think Porsche should give me a new one, most likely broke due to full discharge and that was due to a bad alternator wich they replaced under warranty with 800 miles on the odo..
08-09-2012, 08:24 PM
#28
Rennlist Member
^ That. Porsche won't even warranty lead acid batteries you think they'll step up to a $3k exposure?
10V may not crank your engine but still good for a bunch of poser applications in the trailer. If not, use as ramp for loading car on to trailer.
10V may not crank your engine but still good for a bunch of poser applications in the trailer. If not, use as ramp for loading car on to trailer.
08-10-2012, 07:36 PM
#29
Racer
Not sure if warranty on batteries is different here in Oz but recently had a flat lead acid replaced at no charge with Porsche road side assist support - runs for 3 years from purchase (at least original owner)
I doubt that would extend to the LiOn variety though
I doubt that would extend to the LiOn variety though
09-26-2012, 05:32 PM
#30
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I am hoping that this information is used just for clarification and to educate the fellow car enthusiasts, racers, etc. regarding lithium batteries. These are the facts based on my experience with lithium batteries and as a car builder and race driver. This may only be relevant to those who have a lithium battery, are looking to upgrade to lithium or want to know if their lithium battery is bad or not. Lithium batteries are just like street or track tires.....you can buy cheap ones or you can spend money getting ones that will deliver superior performance.....you get what you pay for. It's all just a choice and I am not trying to persuade anyone to buy something they don't need. At the very least, more quality information is always good when making an educated decision on what will meet our needs.
Here is how you can check to see if a lithium battery has been damaged or if it is still good. First, lithium charges at a higher voltage, so an AGM charger will charge at a lower voltage, thus not charge a lithium battery to full capacity. A charge voltage of 14.4 volts is ideal. If you charge the lithium battery to full capacity and let the battery sit overnight, the voltage should not drop below 13.5 volts or it has a bad cell(s).
Also of note, AGM batteries will self-discharge at 3-5% a month, not including parasitic draw. Lithium will self discharge at 1% or less, so they can sit on a shelf for 6 months and have almost no loss, where as an AGM battery can be down 20-30%, getting it real close to a voltage that won't start the car.
The key is having capacity! Putting a small lithium battery designed for a motorcycle is just asking for loss in life cycle and/or premature failure due to parasitic draw, lack of capacity, etc. This is also the case with small AGM batteries.
Just like anything, not all lithium batteries are created equal (build quality, cell chemistry, etc), you ultimately get what you pay for. If you are putting a lithium battery into a nice, high end car like a Porsche, I personally would feel better going with a DOT approved product. From my knowledge, the Porsche Lithium and Braille Lithium batteries are the only automotive batteries with DOT certification.
Here is a quick comparison, just for those interested in an apples to apples comparison of a few 12v Automotive Lithium (SLI) batteries:
Porsche OE Lithium battery: $3000
Braille I48CE is half the price, has double the cranking amps and 50% more capacity than the OE unit. This is a direct comparison, the Braille is a few pounds lighter, DOT approved and has a 3 year warranty (even if raced or tracked).
Braille I48CS is $500 less than OE, has 4.5 times the cranking power, 3 times the capacity of the OE model, DOT approved and 3 year warranty.
The Flying Lizard Porsche team runs the Braille I48CS in both of their ALMS GT cars. Other factory ALMS GT teams that run Braille lithium include Corvette, Ferrari, Lotus and Viper, along with most of the prototypes. They are also used exclusively in the DTM (German Touring Car) series in every Audi, BMW & Mercedes. There is a reason that all of them run Braille Lithium.
Besides weight savings, those teams have reported quicker starting, improved engine management & data logging performance and less HP draw from the alternator due to efficient charging (5 times faster than AGM).
Lastly, when it comes to capacity, I have seen a Porsche 911 (997) with equipped with the Braille I48CS sit for 6 months without a charger and still start the car. This is another benefit for those who don't drive their cars regularly, still want a light battery that has more capacity than the OE battery and has a life construction of 7-10 years. This is why many Porsche dealerships are Braille distributors, as they want to offer their customers a way to shave significant weight off the car, offer better performance and do it as cost effectively as possible, without compromise. Just my 42 cents.
Here is how you can check to see if a lithium battery has been damaged or if it is still good. First, lithium charges at a higher voltage, so an AGM charger will charge at a lower voltage, thus not charge a lithium battery to full capacity. A charge voltage of 14.4 volts is ideal. If you charge the lithium battery to full capacity and let the battery sit overnight, the voltage should not drop below 13.5 volts or it has a bad cell(s).
Also of note, AGM batteries will self-discharge at 3-5% a month, not including parasitic draw. Lithium will self discharge at 1% or less, so they can sit on a shelf for 6 months and have almost no loss, where as an AGM battery can be down 20-30%, getting it real close to a voltage that won't start the car.
The key is having capacity! Putting a small lithium battery designed for a motorcycle is just asking for loss in life cycle and/or premature failure due to parasitic draw, lack of capacity, etc. This is also the case with small AGM batteries.
Just like anything, not all lithium batteries are created equal (build quality, cell chemistry, etc), you ultimately get what you pay for. If you are putting a lithium battery into a nice, high end car like a Porsche, I personally would feel better going with a DOT approved product. From my knowledge, the Porsche Lithium and Braille Lithium batteries are the only automotive batteries with DOT certification.
Here is a quick comparison, just for those interested in an apples to apples comparison of a few 12v Automotive Lithium (SLI) batteries:
Porsche OE Lithium battery: $3000
Braille I48CE is half the price, has double the cranking amps and 50% more capacity than the OE unit. This is a direct comparison, the Braille is a few pounds lighter, DOT approved and has a 3 year warranty (even if raced or tracked).
Braille I48CS is $500 less than OE, has 4.5 times the cranking power, 3 times the capacity of the OE model, DOT approved and 3 year warranty.
The Flying Lizard Porsche team runs the Braille I48CS in both of their ALMS GT cars. Other factory ALMS GT teams that run Braille lithium include Corvette, Ferrari, Lotus and Viper, along with most of the prototypes. They are also used exclusively in the DTM (German Touring Car) series in every Audi, BMW & Mercedes. There is a reason that all of them run Braille Lithium.
Besides weight savings, those teams have reported quicker starting, improved engine management & data logging performance and less HP draw from the alternator due to efficient charging (5 times faster than AGM).
Lastly, when it comes to capacity, I have seen a Porsche 911 (997) with equipped with the Braille I48CS sit for 6 months without a charger and still start the car. This is another benefit for those who don't drive their cars regularly, still want a light battery that has more capacity than the OE battery and has a life construction of 7-10 years. This is why many Porsche dealerships are Braille distributors, as they want to offer their customers a way to shave significant weight off the car, offer better performance and do it as cost effectively as possible, without compromise. Just my 42 cents.