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Old 12-14-2014, 07:30 PM   #1
bdx OP
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Dual USB Charger on 14' GSA

Has anyone had a similar experience to this? I have tried two different dual USB chargers on my 14' R1200 GSA and in each case, I could only charge things in one of the ports, the other one actually DISCHARGED the items that were plugged in. I bought a dual port so I could charge two things at the same time, but that doesn't seem to be possible. Do I have an electrical issue or is that they way those plugs are supposed to work?
This is the one I'm using right now.
http://www.revzilla.com/motorcycle/p...al-usb-adapter
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Old 12-14-2014, 07:49 PM   #2
JimVonBaden
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That should work normally, but don't forget that one of the USB ports is a low amp port not suitable for charging.

You might consider adding a separate USB on the side panel like this:

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Old 12-14-2014, 08:08 PM   #3
sarhog
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Quote:
Originally Posted by JimVonBaden View Post
That should work normally, but don't forget that one of the USB ports is a low amp port not suitable for charging.
Can you elaborate on this? Are you referring to one of the 2 USB ports on the item that the OP is talking about?
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Old 12-14-2014, 08:22 PM   #4
JimVonBaden
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Quote:
Originally Posted by sarhog View Post
Can you elaborate on this? Are you referring to one of the 2 USB ports on the item that the OP is talking about?
Correct. Pretty much all of the dual USB devices have one high charge port and one low amp port.

Quote:
Input 12-24 volts
Output 5 volts 2.1 amps
Two USB ports
Water resistant weather cap
Power / charge two mobile devices simultaneously
Total power of both ports is up to 2.1 Amps
Charges up to 2A when ports are used individually

Here is an example that is properly marked.

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Old 12-14-2014, 08:31 PM   #5
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I have been using the same dual USB accessory that the OP has. I don't think it's marked as to which port is which, how would you tell?
I'm going to to have to do some testing, I think I always use the same port (I only use 1).
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Old 12-14-2014, 08:56 PM   #6
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Quote:
Originally Posted by bdx View Post
I could only charge things in one of the ports, the other one actually DISCHARGED the items that were plugged in
one of the ports actually drained the appliance ?
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Old 12-14-2014, 09:01 PM   #7
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Well, if output from port is less than what the device is consuming it would APPEAR that the port is discharging the device while actually it's just not keeping up.
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Old 12-14-2014, 09:05 PM   #8
JimVonBaden
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Quote:
Originally Posted by sarhog View Post
I have been using the same dual USB accessory that the OP has. I don't think it's marked as to which port is which, how would you tell?
I'm going to to have to do some testing, I think I always use the same port (I only use 1).
In some cases it is not one port more than the other, but if one port is pulling 2 amps the other will be severely limited.
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Old 12-14-2014, 09:09 PM   #9
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Originally Posted by TrickyRic View Post
Well, if output from port is less than what the device is consuming it would APPEAR that the port is discharging the device while actually it's just not keeping up.
my understanding is that if the voltage of the port is higher than that of the battery being charged , it will charge.

the amperage of the port will determine how fast the charging occurs.
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Old 12-15-2014, 10:18 AM   #10
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I run this and have NO drain.

I have this in my Tank bag and charge Garmin and I phone at the same time.


[url]http://www.westmarine.com/buy/poly-planar--waterproof-dual-port-usb-charger--15094345[url]
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Old 12-15-2014, 11:28 AM   #11
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quick link...

http://www.westmarine.com/buy/poly-p...rger--15094345
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Old 12-15-2014, 12:27 PM   #12
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I spliced in a dual cig lighter from the battery like this



From there I have a cig usb port in one and the other powers my Integratr from J&M and both ports charge well.



So far so good
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Old 12-15-2014, 05:00 PM   #13
Core10metal
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And another from Warn N Safe

http://www.warmnsafe.com/usb-3with-pouch/
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Old 12-16-2014, 10:44 PM   #14
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I use the powerlet to charge both my iPhone and my Sena at the same time. No issues and both charge fine.
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Old 12-17-2014, 10:49 AM   #15
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Quote:
Originally Posted by pistole View Post
one of the ports actually drained the appliance ?
Yes. I had my Sena on on port charging and plugged my phone into the other. When I plugged my phone in I checked the icon to see that it was charging (as normal) but the ring that showed battery life was dropping. I unplugged it and it held steady. Plugged it back in and watched it plunge toward zero. then unplugged it again. I switched plugs with the Sena and phone. Phone began charging but the Sena did not indicate that it was charging and has no indicator to battery level so I immediately unplugged it. I was beginning to think that one port was to be used for trickle charging the bikes battery or jump starting or something. As I say, I have used two different USB devices and both have done the same thing. So either my power port is wired wrong or I've had two defective adapters.
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