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I’m only getting 13.01 at the battery while idling. What are your alternator outputs at idle with nothing running?
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This is pretty normal nowadays. Modern charging systems will vary the load of the alternator during different driving conditions based on the battery SOC and amperage draw.
I'm getting 14.4 volts at idle. You're right to be concerned. Check the voltage with your A/C on and off. You can also check a parasitic draw from other 12volt loads like the radio/USB outlets/inverter by switching them on and off or pulling their corresponding fuses. Tell us what ou find.
Could your battery be low and thus putting a load on the alternator?
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My XL EB with no accessories on, key on 12.3V, idle 13.5V, and while driving 14.8V. That is from this mornings cold start.I’m only getting 13.01 at the battery while idling. What are your alternator outputs at idle with nothing running?
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Are you having issues? I have a USB charger that plugs into the 12v (cig lighter). It also displays voltage. Makes it easy to see what it is while driving. Very inexpensive.
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No issues, just curious. I have always been told an alternator should be putting out between 13.5 and 14.5. Just curious what everyone was seeing.
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--Sarcasm Warning-- Are you not worried that the Battery Terminal Protectant, that I see on your battery post, could void your warranty? Sorry but that question is usally asked by many so just thought lets get it out of the way now. Nice to see the preventative maintenance.I’m only getting 13.01 at the battery while idling. What are your alternator outputs at idle with nothing running?
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I’m sure just putting a volt meter on your vehicle voids the warranty these days
As @NeedForSteve mentioned modern charging systems will typically reduce voltage to a minimum (lower load, improve fuel economy) once the BMS measures it has returned the power used to start the vehicle.
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I'm having the same issue, yesterday woke up to a dead battery, drove it for about an hour to recharge and the voltage was reading 14.6 during the drive. Now this morning the vehicle is running at 13 volts while driving. Gotta call the dealership tomorrow to book an appointment.
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