cold cracking amps (car battery) (CCA)
Cold Cranking Amps (CCA) is a battery rating that specifies the ability to start an engine at cold temperatures.
The cold cranking amps refers to the battery current that can be drawn from a new, fully charged battery at -18°C in 30 seconds. The battery voltage of a 12 V battery must be at least 7.2 V. The level of the CCA value is decisive for the battery performance. The CCA value decreases with battery aging, so that the battery can no longer provide its original starting power.