Voltage Gauge reading on Street Glide

Discussion in 'Touring Models' started by craig Lee, May 19, 2016.

  1. craig Lee

    craig Lee Active Member

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    I have a question just for my knowledge and maybe some others. I've noticed on my '08 SG with 90,000+ miles now that the voltage meter at start up is around 14.5-14.7 volts. After riding some time on the freeway, it goes down to around 13 volts and then when I get off doing streets, it goes back up to 14.5-14.7 volts. I have a new battery using a battery tender, a new voltage regulator and pretty new stator. It's pretty much done this since day one with the OEM manual stating the gauge will read 13v-14.5v when running. Question: is the fluctuation to 13v at freeway speeds the regulator cutting back the voltage with the battery now fully charged at freeway speed/rpm and recharging at the 14.5-14.7 when on streets or.....? Thanks again for such a great site!
     
  2. Jack Klarich

    Jack Klarich Expert Member

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    Yes, once the battery is fully charged the regulator will shunt the voltage it does this for 2 reasons 1 the battery does not need the voltage 2 by shunting it gets rid of heat to protect itself
     
  3. craig Lee

    craig Lee Active Member

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    Bingo, that's what I was thinking/hoping Jack! I "know" there is "never" a lame question on this forum but I've always wondered and have never found the exact answer. Leave it to this forum, answered promptly and I still feel good about the question. :) HDTALKING, the best!!
     
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  4. Jack Klarich

    Jack Klarich Expert Member

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    Ride safe and happy :)
     
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