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Re: Battery drain while parked
It probabally was the alternator, but a bad alt. will slowly kill the battery as well.
Check the alternator output, measure the terminal voltage at the battery with the car running. It should be 13.80Vdc to 14.20Vdc with the accessories off. If that checks out, disconnect the NEGATIVE battery cable with the key off and check for a spark as you gently touch it to the battery post. There may be a VERY FAINT spark, bot anything that audible or very noticeable indiactes a draw, now you've got to find it.
If all these test pass, it's likely the battery is now bad and will need to be replaced.
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