The Napa The Legend 7551R is part of the Consumer Reports Automotive Battery Testing Program. In our lab tests, car battery models like the Legend 7551R are scored based on various criteria, such as those listed below.
Life The life test measures how well a battery withstands repeated charge and discharge cycles in warm engine compartment temperatures. the more cycles they endure while maintaining a higher voltage, the higher the score.
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Reserve Capacity Reserve capacity estimates how long a car’s batteries can run if the charging system fails.
cca cca performance reflects a voltage across our load of half the stated average cca for each group size after starting for 15 seconds at 0º f. we charge the batteries at the 14.5 volts typically supplied by vehicles, rather than the higher voltage used by manufacturers. Batteries charged at the lowest voltage met BCI voltage standards for a fully charged battery.
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