Cold cranking amps

Cold cranking amps Deep cycling Electrolyte Gassing Hydrogen Hydrometer Lead peroxide Lead sulfate Maintenance free Overcharging... 

The key battery performance parameters in this market are cold cranking amps (CCAs) and reserve capacity (RC). For a 12-V SLI battery, CCA is defined as the number of amps a lead-acid battery at 0°F can deliver for 30 sec while maintaining at least 7.2 V. The RC is defined as the amount of time (in minutes) that a battery can deliver 25 A at 80°F while maintaining terminal voltage of at least 10.5 V. 

Starter batteries should not be deep discharged they are designed for shallow discharges only. The lead is applied on thin plates in a sponge-like form that has the appearance of fine foam. This extends the surface area of the plates to achieve low resistance and maximum power, but this fragile structure is not suitable for deep discharges. Starter batteries are marked with CCA and ampere hour (Ah) or reserve capacity (RC). CCA refers to cold cranking amps, a measurement that represents the amount of current a battery can deliver at cold temperatures. (CCA and internal resistance are related.)... 

Figure 18.5 Cold cranking amps/kg battery weighr (current at -18 C 30s duration to 7.2 V) (Courtesy of Chloiide Batteries)...

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