Voltage in a Wrangler

E

epriev

Active Member
I don't know why I noticed the voltage while on the weekend off-roading trip.

It hovered between 13.0 to 13.2. It didnt seem to increase with higher RPM. This seemed low based on previous vehicles that hovered closer to 14 and move more with RPM.

In the morning, the voltage would go to the mid to high 14s for a few minutes when off throttle. On throttle, back to low 13s. After the morning, it wouldn't go above 13.2.

Normal, or potential issue? About 5k miles and 4 months on a 2025 JLU.
 
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epriev said:
I don't know why I noticed the voltage while on the weekend off-roading trip.

It hovered between 13.0 to 13.2. It didnt seem to increase with higher RPM. This seemed low based on previous vehicles that hovered closer to 14 and move more with RPM.

In the morning, the voltage would go to the mid to high 14s for a few minutes when off throttle. On throttle, back to low 13s. After the morning, it wouldn't go above 13.2.

Normal, or potential issue? About 5k miles and 4 months on a 2025 JLU.
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Sounds like a normal jeep to me.
 
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This means your battery is charged and does require a charging voltage or current at that moment, The alternator puts out enough juice to keep everything running and your batteries topped off. You will notice if you leave it shut off for a couple of days or only make very short trips, the voltage will go into the 14.2-14.3 range and will likely stay there for a while. That is your charging voltage.

I work away from home and my drive from my room to the dock is less than one mile. Over 7 days, that 2 mile round trip never has a chance to recharge my batteries; so the whole next week I am basically playing catch up and occasionally put it on a trickle charger at home.
 
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4LO_Send_It said:
This means your battery is charged and does require a charging voltage or current at that moment, The alternator puts out enough juice to keep everything running and your batteries topped off. You will notice if you leave it shut off for a couple of days or only make very short trips, the voltage will go into the 14.2-14.3 range and will likely stay there for a while. That is your charging voltage.

I work away from home and my drive from my room to the dock is less than one mile. Over 7 days, that 2 mile round trip never has a chance to recharge my batteries; so the whole next week I am basically playing catch up and occasionally put it on a trickle charger at home.
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Welcome.
 
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