Dead Battery

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Dec 17, 2024
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Replaced battery 2 weeks ago as original battery went dead overnight. Just now, that new battery went dead. We just drove it yesterday. Any thoughts? 2022 Outback Limited XT.
 
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Check that there are no lights like a dome light or something left on. Other than that, have it checked out as in the alternator is working etc.
It doesn't take a lot to drain a battery overnight.
Have them check the current draw with the car not running. This is done by connecting a milliampmeter between the battery and a disconnected battery cable. This is called parasitic drain and it should be very small as in a few milliamps at most. If it's more get them to find out why.
 
What he said. And check the charging voltage at idle and rpm. Should be ~14.3-14.8 ish.

I've heard of a lot of these problems on the newer Subarus. A quick search might get you your answer.
 

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