RC-Monster Forums - View Single Post - How big of an A123 cell would it take to start a car?

BrianG · 01.05.2009, 02:45 PM

Depends on engine size, temperature, etc. Car batteries are typically rated from 400-900 cold cranking amps (CCA). To get 900A from a 30C burst A123 cell, you'd need a 4s12p pack. But to keep voltage drop down, I'd use at least a 4s20p.

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BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	01.05.2009, 02:45 PM Depends on engine size, temperature, etc. Car batteries are typically rated from 400-900 cold cranking amps (CCA). To get 900A from a 30C burst A123 cell, you'd need a 4s12p pack. But to keep voltage drop down, I'd use at least a 4s20p.