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Originally Posted by zafarhayatkhan
Voltage at Battery with the engine off is 12.4 and with the engine running it is 13.4.
I thought it should be around 14.5 V.
So looks like the alternater is working. The Advance Auto Parts testing equipment passed the alternater.
I believe I may have a combination of weak charging, along with a battery drain.
Should have the voltage regulater in a day or so. Hopefully that will resolve the issue.
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The charging voltage will drop from ideal due to temperature and/or load. 13.4 volts would only be too low with a cold alternator, no electrical loads, and a fully charged battery.