How big of an A123 cell would it take to start a car?

[_paralyzed_]

Originally Posted by MetalMan

That wire acts as a resistor, hence why it needs to be the proper length. However, the voltage an alternator puts out is typically low-to-mid 14v. This is too high for A123s and the wire won't decrease the end voltage.

oh, the length sets the charge rate and the voltage is the voltage. Got it. My point was cc/cv wasn't necassary. Thanks MetalMan!