12 volt battery

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chuckm

Member
Joined
May 31, 2017
Messages
6
How and when is the 12 volt battery charged? One day I couldn't turn my radio off and over several days the 12 volt battery was drained, even though I had the 120 volt charger plugged into the car. After jumping the 12 volt battery, the car started and ran normally, and the radio controls then worked - guess losing power rebooted the computer. Any ideas?
 
I believe the 12V battery is charged when the car is actively charging the High Voltage Battery and when the Car is on. I had the radio of my car stay on one time and I figured out which fuse it is and pulled it. After putting the fuse back in, the radio behaved as it should.
 
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