For 1990-2009 cars only
A battery has two ratings:
| • | The reserve capacity |
| • | The cold cranking amps (CCA) |
Reserve Capacity
The reserve capacity rating is an estimate of the maximum length of time possible to travel with headlights on, with a minimal electrical load and no generator output. Expressed in minutes, the rating is the approximate time the fully charged battery will perform without the battery terminal voltage dropping below 10.5 V at 27°C (80°F).
Cold Cranking Amperage (CCA)
The CCA rating, expressed in amperes, is the minimum amperage which must be maintained by the battery for 30 seconds at -18°C (0°F), while meeting a minimum voltage requirement of 7.2 V.
