what is cca in battery

CCA stands for Cold Cranking Amps, which is a rating used in the battery industry to define a batterys ability to start an engine in cold temperatures. It is the number of amps a battery can support for 30 seconds at a temperature of 0 degrees Fahrenheit until the battery voltage drops to unusable levels. The CCA rating is critical for good cranking ability, especially in cold climates, as batteries have lower current delivery in cold temperatures. The higher the CCA rating, the greater the starting power of the battery. Therefore, if you live in a cold climate, the CCA rating is a more important consideration than it is if you live in a warm one.