Battery voltage question (again)
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Tourer
Joined: Aug 2008
Posts: 493
Likes: 17
From: Ft LAuderdale
Battery voltage question (again)
Last time I posted a question most of the respondents went off in a tangent and nobody really answer my question. Let's try it again.The question is:
When I am actuating the throttle (giving it gas) the Voltage gauge on the fairing shows 14V but when I let go the throttle it drops to about 12.7 V. I put a volt meter on the battery and the battery shows the same voltage as the gauge on the fairing. So is this normal?
I am worried it may be the regulator starting to go. The dealer says it is but I do not trust them 100%. BTW, I did put a new battery and it does the same thing
When I am actuating the throttle (giving it gas) the Voltage gauge on the fairing shows 14V but when I let go the throttle it drops to about 12.7 V. I put a volt meter on the battery and the battery shows the same voltage as the gauge on the fairing. So is this normal?
I am worried it may be the regulator starting to go. The dealer says it is but I do not trust them 100%. BTW, I did put a new battery and it does the same thing
Road Master
Joined: May 2012
Posts: 1,137
Likes: 8
From: illinois
Ever ask what the voltage out put is at a given rpm? What does it do while your riding it. Maybe you should take it to another dealer or an indy and ask them. Then you can avoid stupid answers to easy questions. I mean if you don't trust one ask another
Seasoned HDF Member
Joined: Apr 2013
Posts: 32,851
Likes: 17,887
From: Newcastle, OK
I doubt seriously if there is anything wrong with your electrical system at all. Your battery is still above 12 volts during idle, and you already said it charges when you apply throttle. This implies that the voltage regulator is working as well. Turn off the engine and everything else electrical which could draw any appreciable current and read the battery voltage then. Do the same thing after the bike sits overnight. If the voltage is above 12 volts, then you can be assured that nothing is wrong.
Outstanding HDF Member
Joined: Jun 2012
Posts: 2,248
Likes: 7
From: Atlanta, Georgia
Last time I posted a question most of the respondents went off in a tangent and nobody really answer my question. Let's try it again.The question is:
When I am actuating the throttle (giving it gas) the Voltage gauge on the fairing shows 14V but when I let go the throttle it drops to about 12.7 V. I put a volt meter on the battery and the battery shows the same voltage as the gauge on the fairing. So is this normal?
I am worried it may be the regulator starting to go. The dealer says it is but I do not trust them 100%. BTW, I did put a new battery and it does the same thing
When I am actuating the throttle (giving it gas) the Voltage gauge on the fairing shows 14V but when I let go the throttle it drops to about 12.7 V. I put a volt meter on the battery and the battery shows the same voltage as the gauge on the fairing. So is this normal?
I am worried it may be the regulator starting to go. The dealer says it is but I do not trust them 100%. BTW, I did put a new battery and it does the same thing
Outstanding HDF Member
Joined: Jun 2012
Posts: 2,248
Likes: 7
From: Atlanta, Georgia
Last time I posted a question most of the respondents went off in a tangent and nobody really answer my question. Let's try it again.The question is:
When I am actuating the throttle (giving it gas) the Voltage gauge on the fairing shows 14V but when I let go the throttle it drops to about 12.7 V. I put a volt meter on the battery and the battery shows the same voltage as the gauge on the fairing. So is this normal?
I am worried it may be the regulator starting to go. The dealer says it is but I do not trust them 100%. BTW, I did put a new battery and it does the same thing
When I am actuating the throttle (giving it gas) the Voltage gauge on the fairing shows 14V but when I let go the throttle it drops to about 12.7 V. I put a volt meter on the battery and the battery shows the same voltage as the gauge on the fairing. So is this normal?
I am worried it may be the regulator starting to go. The dealer says it is but I do not trust them 100%. BTW, I did put a new battery and it does the same thing
Former Sponsor
Joined: Aug 2005
Posts: 10,968
Likes: 54
Mine is the same. That is normal. The voltage is higher when you are riding as the engine is turning and creating more volts.
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Road Master
Joined: Jan 2010
Posts: 881
Likes: 13
From: ONT
Not all VR's react the same. VR's convert AC Voltage to DC to regulate the current/voltage coming from the Alternator to the electrical system. This also regulates the Voltage to the battery. The AC voltage/current generated increases or decreases with RPM. In your case Voltage is regulated at 14V. Some regulators are sensitive enough to hold voltage at or below regulated Voltage even when RPM's are at idle. As long as the voltage doesn't go below 12V when at idle (Battery would be discharging) and stays below 15V (H-D Specs) you have nothing to worry about.
If money wasn't an issue a VRs would be designed to hold the Voltage at a constant Voltage at any RPM. The Voltage going to your VR is as high as 60VAC depending on once again RPM. The VR rectifies the voltage to DC and reduces the output to in your case 14V
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