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My onboard volt meter reads 13.8 - 13.9 when running at idle. My battery charger volt meter says 14.6. Are these stock volt meters that far off or are they reading from different points on the bike?

The bike when off and just key on also displays 11.8v on the dash meter and 12.6v on the battery charger volt meter. (Charger not plugged into wall, just reading volts)

Is this normal?
 

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It depends on the total voltage drop, based on the wire thickness plus distance of the volt meter from the battery. The shorter distance to the battery, the less the volt drop is, unless you increase the diameter of the voltmeter to battery wiring. Try it for yourself by connecting the onboard volt meter to the battery first and then record the reading. Now, install the volt meter in the intended position and take a second reading. The voltage difference may vary with around 0.1 - 0.5 Volt.
You could also have a high resistance at one of your connectors or the onboard meter just simply reads low. There could be a difference between the accuracy of the different meter used.
 

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My onboard volt meter reads 13.8 - 13.9 when running at idle. My battery charger volt meter says 14.6.
Yeah, mine has a similar kind of drop. I've checked the on-board meter against my multi-meter a number of times and have simply gotten use to the difference. I run my dash mounted volt meter thru my aux fuse box, so I figured I'd experience some voltage drop -- but then I used some thicker wire to get the signal from there to the handlebars, hoping to not lose more. When riding down the road, I now know what to add to the reading to know where my battery and system really are. Early on, it bothered me that the reading on the dash was low. But after checking it multiple times to be sure the bike is not having an electrical issues, I now know what factor to just mathematically add to the reading to know the 'real' value.
 

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Mine is off by 0.4v

I fitted a volt meter in place of the power socket, I used the sockets power to run the voltmeter and it is down by 0.2v
 

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My volt meter reads 14.1 most of the time.
 

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Sounds normal.

Voltmeters don't necessarily need to be dead accurate.

There real mission in life is to alert you to a CHANGE in charging rate/voltage at idle and higher rpm. If yours normally reads 14.1 when cruising down the road, and one morning you notice 12.6 volts.....time to figure out what is wrong before you are stranded!
 

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Odd readings on a digital VM is interesting. On the Wee it read a bit low until I installed the EB wiring and then got LED bulbs for the headlight. It reads much better now up to a 14.6 max.
On my BMW G650GS the other 2 digital meters, same as on the Wee, read 888 or 000 or some real voltage. Might be the vibration from the windshield bracket mount. One reads normal indications most of the time and the other meter goes bonkers as soon as the revs increase and it vibrates more. May have to rubber mount the bracket that holds the meter?
 

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I do think you are reading far to much into what is not very much. Anywhere 13.5 to over 14 is just fine. If it gets below 13 or over 15 you has problems, otherwise forget it and ride the bloody things.
As Realshelby says watch for significant change, otherwise all is good.

Cheers Tom R
 

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I noticed a change after the recall (I did both ECM and wiring recalls at the same time). Before it used to read at around 14, after the recall I never see it go over 13.5.
It’s been like this for quite some time and it seems to be at this level consistently; no issue with the battery so far.
 

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At 13.5v I would probably want to check at the battery with a good meter to see what it says. You really need to see around 14 and higher at the battery. Probably is just a "glitch" in how the onboard readout is now calculated. But I would want to be sure.
 

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Not at idle, but certainly at 3K rpm and above, provided normal loads. A DL650 will drop to 11.5 volts at idle with heated grips on. Further with a heated jacket. Same thing could happen if you have an other loads above lights, FI pump, etc.
 

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My onboard volt meter reads 13.8 - 13.9 when running at idle. My battery charger volt meter says 14.6. Are these stock volt meters that far off or are they reading from different points on the bike?
At 13.5v I would probably want to check at the battery with a good meter to see what it says. You really need to see around 14 and higher at the battery. Probably is just a "glitch" in how the onboard readout is now calculated. But I would want to be sure.
Realshelby, AS ALWAYS, you are correct. I just put a voltmeter at the battery and, as the dash reads 13.5v, the meter is reading 14.5v.

The reading on my dash voltmeter changed after I had the wiring and control module recall done; it used to be more accurate. Not a big deal, as I rarely pay any attention to it; but it’s just another typical example (in my experience) of dealership ‘workmanship’... fix one thing and brake another.
 

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FAR from always correct....

The lesson is that you don't need to worry about exact voltage. Confirm your dash meter by testing against it at the battery with a good meter. There will almost always be a difference. Once you see that difference you can "adjust" for it when you look at the dash meter. What you are really looking for is a change from what you normally see. Doesn't matter if the dash meter is 10 volts low......as long as you know that and watch for it to change what is normal for it.
 
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