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Batteries may look alike on the shelf, but under your hood it's a different story. Our tests show that some are far more likely than others to last longer and provide more cranking power.
Longer life is especially critical if you take lots of short trips and you do at least some of your driving in warm-weather regions. Quick drives shorten battery life by offering little recharging time, while high temperatures can increase oxidation within the battery and boil off the electrolyte needed for current.
Our life test mimics those tough conditions by measuring how many repetitive, 100-hour drain-and-recharge cycles batteries can handle before their ...