US Patent 6911825 Battery tester with CCA lookup table

The present invention is directed toward a handheld battery tester that automatically determines and displays to the user a nominal battery rating (e.g., CCA rating) in response to the user entering certain vehicle information, e.g., the make and model of the vehicle. This eliminates the need to read the battery CCA rating from the battery and eliminates the need to check a secondary reference to be sure that the battery in the vehicle is rated high enough for that vehicle. Preferably, the battery tester is a processor-based battery tester that automatically uses the determined nominal CCA rating rather than making the user enter the displayed value.