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To convert cold cranking amps (CCA) to ampere-hours (Ah), a common approximation is used, though it's important to note that this conversion is not exact due to the different nature of these measurements. A rough estimation often used in the industry is:
Ah≈CCA/7.25A
This approximation can vary depending on the specific battery and its design, but it gives a general idea.
Below is a table showing the conversion of various CCA values to Ah, sorted from smallest to largest.
CCA |
Ah |
230 |
31.72 |
500 |
68.97 |
550 |
75.86 |
600 |
82.76 |
650 |
89.66 |
700 |
96.55 |
720 |
99.31 |
750 |
103.45 |
760 |
104.83 |
800 |
110.34 |
810 |
111.72 |
850 |
117.24 |
900 |
124.14 |
1000 |
137.93 |
To convert 100 CCA to Ah:
Ah=100/7.25≈13.79 Ah
To convert 800 CCA to Ah:
Ah=800/7.25≈110.34 Ah
To convert 1000 CCA to Ah:
Ah=1000/7.25≈137.93 Ah
Cold Cranking Amps (CCA) is a rating used in the battery industry to define a battery's ability to start an engine in cold temperatures. It measures how many amps a 12-volt battery can deliver at 0°F (-18°C) for 30 seconds while maintaining a voltage of at least 7.2 volts. The higher the CCA rating, the greater the starting power of the battery.
An ampere-hour (Ah) is a unit of electric charge. It represents the amount of electric charge transferred by a steady current of one ampere flowing for one hour. Ampere-hours are commonly used to describe the capacity of a battery, indicating how much charge it can deliver over time.