How Do You Load Test a Car Battery: The Complete Step-by-Step Guide
To load test a car battery, you must verify it is at 100% state of charge ($\ge 12.6\text{V}$), apply an electrical load equal to 50% of its Cold Cranking Amps (CCA) rating for 15 seconds, and measure if the voltage remains above $9.6\text{V}$ at $21^\circ\text{C}$ ($70^\circ\text{F}$). The entire process takes approximately 15 minutes, requires basic […]