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Just because your car is old doesn’t mean it’s outdated. it still runs is your ultimate auto resource, whether you rotate your tires or change your oil.. How to check a car battery. you get into your car and discover that the engine won't start and that the headlights won't turn on. after you jump start the car, you should find out whether or not you need a new battery or alternator.. “drivers have also complained about a reduction in the battery’s ability to hold a charge.” this seems typical for most of the batteries i’ve ever experience, be it laptop or other portable electronics, ups (uninterruptible power supply) systems, and standard car batteries..
