*Cold start current (CCA SAE) is the discharge current which a battery can provide tor 30 seconds , at a temperature of -18°C (64°F) without voltage dropping below 7.2 V .
** Reserve capacity (RC SAE) is the time taken at a temperature of +27°C (81°F) , and a discharge current of 25 'A , to reduce the voltage of a fully charged battery to 10.5 V .
