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they do, it is called not starting

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Q: Why don't cars carry low battery warning devices?
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Are there any devices that can charge up a car battery besides an alternator?

older cars had a generator ,not an alternator, but you can always use a battery charger to charge a battery


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What battery was used in the first cars?

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Why don't cars carry 2 batteries?

Why Cars Usually don't have Two BatteriesThere are several reasons that come to mind, and there are probably others that I cannot think of at the moment. Here are some of them:99+% of the time they are not needed.They are expensive.They take up space unnecessarilyA second battery would require additional wiring and control devices to protect the 2nd battery from a failure of the first.Many large trucks and heavy equipment do have multiple batteries for the additional demands they create, and also many motor homes and such because they use interior lighting, refrigeration, etc. when the vehicle engine is not running.Properly maintained "Cars" just don't need a second battery.


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Warning lights on a Honda Accord?

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