What the *&%@ is CCA?
What is a CCA? What are Cold Cranking Amps? These are questions we get frequently here at Batteryweb.com. Let me see if I can clarify a bit. The cold cranking ampere (CCA) rating refers to the number of amperes a battery can support for 30 seconds at a temperature of 0°F until the battery voltage drops to 1.20 volts per cell, or 7.20 volts for a 12V battery. Therefore, a 12V battery that carries a rating of 600 CCA tells us that the battery will provide 600 amperes for 30 seconds at 0°F before the voltage falls to 7.20V. A lead acid battery is made up of cells what are 2.1 volts each. So a 12-volt battery of course has 6 cells. A 6-volt battery has 3 cells and so on. Hopefully this will answer that question for you.
Written by
Ken