Originally Posted by CHELLIE
I thought this was neet, What are your Thoughts on this
IMHO, Pure BS.
A quick calculation shows that a capacitor of this size would only last two or three seconds while pulling the average 150 Amp starter current on the automotive engine.
The reference below indicates that one of these capacitors can store about 0.35 watt hours. A single A123 cell can store 7.2 watt hours or 20 times more than a capacitor. On top of that, the A123 and the various LiPo batteries will maintain their voltage throughout the discharge cycle, then drop off. A capacitor will immediately start dropping off in voltage as soon as you connect a load. Simple T=RC where T is time in seconds, R is resistance, and C is farads.
Methinks somewhere in the background there is another lead acid battery that actually started the car.
Even if it did work, some automotive alternators require connection to a lead acid battery when the alternator is turned over at running RPM. Not doing so will void the alternator warranty.