Alternator output on 2012+ - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 8 Old 06-15-2012, 07:27 PM Thread Starter
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Alternator output on 2012+

I just put a 12V power socket on my Glee, and I plugged in my portable voltmeter that I use to monitor my voltage in the winter with my heated gear, and went for a ride. I noticed the voltage output was 13.8V-13.9V at 4K-5K rpm's with no extra loads. On my K7 same voltmeter would read about 14.5V again with no load. The K7 would have a lower voltage at idle, where as the L2 doesn't vary as much between idle and say 5K rpm. I have no idea about actual output watts available, as I am not about to put my heated gear on in this weather. The L2 should have 25 extra watts available over a K7. I guess my question is what should normal running voltage be with no load?

Kevin

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post #2 of 8 Old 06-15-2012, 07:52 PM
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Based on the way the voltmeter parallels the MOSFET equipped 2007 I used to have, I'd say the regulator is just doing a better job. Higher voltage doesn't mean more power is available, it means the regulator is allowing a higher voltage level before shunting off the excess.

With a fully charged battery, I am seeing ~13.8V in normal use. Once I was doing some work involving turning the ignition and lights on for a bit without the motor running. For a while after that, I was seeing up to 14.3V as the system was putting more power out to charge the battery. My '07 was doing exactly the same thing with a MOSFET regulator.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
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post #3 of 8 Old 06-16-2012, 06:28 AM
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IF the 2012 has a MOSFET regulator there's about 14W more available due to the improved electrical efficiency. Possible more effectively at lower rpm's.

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post #4 of 8 Old 06-16-2012, 02:20 PM Thread Starter
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Just went for another ride and noticed at idle, it was about 13.5-13.6V, and again 13.8V-13.9V at higher RPM's, pretty steady, doesn't vary a lot between idle and 5K+ RPM's. The old Wee (K7) would be 12+V at idle, can't remember exactly but it was 12.xx something. So the Glee is definitely better at low rpm and more consistent overall, but not as high of a peak voltage. I know this means nothing far as power output, just my observations.

Kevin

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post #5 of 8 Old 06-16-2012, 02:46 PM
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It also takes a short period of time to ramp up voltage after starting. It acts just like the MOSFET R/R I put in the old Wee.

Pat- 2007 DL650A was ridden to all 48 contiguous states. I didn't quite make it to 17,000 miles on the 2012 DL650A.
Nicknames I use to lessen typing, Vee = 2002-2012 DL1000s. Vee2=2014-2016 DL1000s. Wee = 2004-2011 DL650s. Glee = 2012-2016 DL650s
See https://www.stromtrooper.com/general-...nicknames.html

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post #6 of 8 Old 06-16-2012, 03:45 PM Thread Starter
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Yes you are right Greywolf, I noticed that too, just failed to mention it.

Kevin

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post #7 of 8 Old 09-08-2013, 08:06 PM
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I realize this is an old post, but my battery monitor on my 2013 Wee shows that it charges in the area of 14.5 at a couple of thousand rpm. At idle it is in the 13's. This is with a resting voltage of 12.7 on the battery.
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post #8 of 8 Old 09-11-2013, 08:47 AM
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Quote:
Originally Posted by cycleman View Post
I realize this is an old post, but my battery monitor on my 2013 Wee shows that it charges in the area of 14.5 at a couple of thousand rpm. At idle it is in the 13's. This is with a resting voltage of 12.7 on the battery.
Same, purchased a chinese voltmeter and run it all time for the same reason as the June poster heated gear. I can run Gerbings jacket and gloves with heated Oxford Grips and charge my cell at the same time. Hits about 12.3-12.5 at idle and 13. somthing at 3-4K.

I live in Canada so already had the heated gear on last weeks morining commutes. I do shut off the grips once I hit a city with a lot of traffic lights and the gear is not turned up too much yet about 1/3 of the way on the gloves and just on for the jacket.

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Last edited by Captain Farkle; 09-11-2013 at 08:53 AM.
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