Stable Voltage for Phone Charging and GPS - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 12 Old 06-26-2013, 01:00 PM Thread Starter
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Stable Voltage for Phone Charging and GPS

VstromJohn and I have had trouble charging phones and running the GPS during a ride. After some troubleshooting, it seems there is approximately 12 volts running to our power source (cigarette lighter style) at idle but more than 15V during high revs. It seems my Garmin unit (nuvi 50) and his phone charger dislike the higher voltages. Will I have to upgrade to a more motorcycle friendly GPS or is there another option to control (limit) the voltage on the road?
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post #2 of 12 Old 06-26-2013, 03:21 PM
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If your meter is correct, 15v is usually considered overcharging. Before changing the Garmin, I would explore why you are outputting more than 14 volts.

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post #3 of 12 Old 06-26-2013, 03:53 PM
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The bike's voltage regulator should not allow more than 14.8V. If it is, change it.

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 #4 of 12 Old 07-08-2013, 01:02 PM Thread Starter
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so the 15 Volts was a rounded number. In fact, the voltage never exceeds 14.8 on either bike (2009 wee and 2002 vee) so it is NOT a voltage regulator issue (on either bike) My feeling is that the ground could be an issue or that 14.8 volts is simply too much voltage for the Garmin and it shuts the charging process off....what do you think?
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post #5 of 12 Old 07-08-2013, 01:26 PM
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Quote:
Originally Posted by copen bros. racing View Post
so the 15 Volts was a rounded number. In fact, the voltage never exceeds 14.8 on either bike (2009 wee and 2002 vee) so it is NOT a voltage regulator issue (on either bike) My feeling is that the ground could be an issue or that 14.8 volts is simply too much voltage for the Garmin and it shuts the charging process off....what do you think?
The phone charger should have a built in voltage regulator. Every phone that charges by USB type cable wants to see 5 volts. The "lighter type" charge cords have the voltage regulator built into the lighter plug. Same for Nuvi car chargers.

What exactly is happening? Are the devices not charging? If you have them on, the charging cords may not have the capacity to run the device and charge it at the same time.

-Tom (DL650AL2) (KA1TOX) (E-I-E-I-O)

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post #6 of 12 Old 07-08-2013, 01:26 PM
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Check the voltage in the wires to the unit. You may just have a bad connection. Do the wires connect to the battery? If so, does it charge with the engine not running? If not, what are they connected to?

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 #7 of 12 Old 07-10-2013, 10:54 AM Thread Starter
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let me speak specifically to the garmin gps as it is on my bike...the unit will run and charge on my bike while the bike is not running. It is only when I am running down the road that the unit will not charge. The unit simply uses the battering power stored in the unit and once it is gone, it shuts down. I currently have the cigarette styled (powerlet, I believe) 12 v source wired to the battering on the + side, and to the bolt connecting cable guides on the - side. I was wondering if moving the ground to the battery itself would be a better course of action. Thanks for your time...
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post #8 of 12 Old 07-10-2013, 12:56 PM
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I'd run both wires to the battery or an add on fuse box. Both leads should be fused.

-Tom (DL650AL2) (KA1TOX) (E-I-E-I-O)

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post #9 of 12 Old 07-10-2013, 09:22 PM
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Quote:
Originally Posted by copen bros. racing View Post
I currently have the cigarette styled (powerlet, I believe) 12 v source wired to the battering on the + side, and to the bolt connecting cable guides on the - side. I was wondering if moving the ground to the battery itself would be a better course of action. Thanks for your time...
I think you have a connection problem not a voltage problem and the cigarette styled plug is the "FIRST" place to look, the spring loading of the centre + pin will after a few bumps want to push it's self away from the contact point, use a zip tie or some rubber bands to hold them together and try again.

I also use my Garmin on my WR450f and the charging system on it is far more unstable the one on the Suzuki.

The hard wired direct to the battery systems are a more reliable system on a bike, but don't just cut the plug off the one you have because many GPS's only run off 5 volts not 12v and the reducer is in the cigarette type plug.

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post #10 of 12 Old 10-29-2013, 07:48 AM
 
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Like the above poster said, the power from your battery is 12volts. The cord has a circuit in it to reduce to 5volts. That is, when the input voltage is 12, the output is 5. When the voltage is higher, the output voltage is higher. Like greywolf said, check voltage at the cord.
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