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Q: i have a 2007 entourage, had battery replaced and noticed lights dim upon decel on 2007 Hyundai Entourage

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mainly below 30mph and only momentarily. any suggestions?
(1) Answer
Make sure the battery terminals are clean and tight. If you have a voltmeter, check the alternator output. Voltage at the battery should be 12.6 with engine off and at least 1 volt higher with engine running. If those check out to your satisfaction then you will need access to some diagnostic equipment to check alternator amperage output.
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