2003 T4R voltage output, correct......

[videopuppy]

I had to jump start my T4R today. It's A 2003 with the original battery. The light still shows it's good, but I don't put much faith in that. Anyway, I was gonna just go get a battery, but I checked the voltage at the battery with it running and it's only 13.58ish.... shouldn't it be at least 14 volts?

Thanks
Dave

 

[BlackWorksInc]

That sounds about right, your alternator actually keeps the battery at roughly 95% capacity to buffer out voltage spikes and provide a smoother voltage when charging. At idle you will probably see about 13.5~13.7, should be closer to 14 if you have a lot of loads on and up the idle some.

 

[03_4x4Runner]

It is time to replace that battery even though the volts are still good in my opinoin.

 

[videopuppy]

Yeah battery

Yeah, I agree. Thanks for the voltage info. Being that the battery is 7 - 8 years old that is enough for me to replace the battery. I was just curious if the alt was also underperforming but for now I'm going to say the alt is fine. I'll get a new battery tomorrow.

Thanks
Dave

 

[tacticalcustoms]

as long as CCA is good and volts are staying the same I would leave it