Automotive Battery Cold-Cranking Amp Estimator By Bowling

The definition of the Cold-Cranking Amperage (CCA) of an automotive battery is the amount of current a given battery can deliver for 30 seconds at zero (0) degrees F without dropping below a specified cutoff voltage (manufacturer-specific, but usually 10.5 volts).

The following provides an estimation on what CCA rating is required for a given vehicle. Program inputs are the engine CID - Cubic Inch Displacement (Use the engine displacement units conversion code to convert liters or CC to Cubic Inches), and the number of cylinders.

Here is a FAQ file for information about batteries.

Program Inputs:

Engine Cubic Inch Displacement (CID):

Number Of Cylinders:

Press this button to submit a computation:

To reset the form input:

Bruce Bowling
Bowling Superior