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Posted by JW 2 years ago In:

JW
JW Asked:

I have a 2002 lincoln town car and just had my ...

I have a 2002 lincoln town car and just had my alternator replaced. after 3 starts and sat for a few hours, I needed a jump. Could my battery be bad also and just needed the battery too recharge. how long doesw it take too recharge the battery

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Iamjustcurious
Iamjustcurious Answered:

Most discount auto supply stores will test your car battery for free.  If it is defective, you can just buy a new one.  Depending on the state of discharge, and on the output of your battery charger, it may take anywhere from a few hours (using a 10 amp charger) to 48 hours (using a 2 amp charger).  Also check the battery terminal connections to see if they are corroded.  Clean and reconnect if necessary.

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crhenry
crhenry Answered:

I suspect that the replacement alternator has a bad diode or the accompanying voltage regulator has a similar problem.  either will allow the alternator to charge the battery.  either will also run a battery down overnight.

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