Battery Load Tester Calculator

Evaluate battery passing voltages

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About Battery Load Tester Calculator

The Battery Load Tester Calculator interprets readings from a carbon pile load tester. Simply input your battery's rated Cold Cranking Amps (CCA), the voltage reading taken after 15 seconds of a 1/2 CCA load, and the battery's temperature. It calculates the required amperage draw and temperature-compensated minimum passing voltage (e.g., 9.6V at 70°F) to determine battery health.

Battery Load Tester Calculator Features

  • Temperature compensation matrix
  • Automatic 1/2 CCA load derivation
  • Pass / marginal / fail diagnostic scale
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