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  #1  
Old 11-18-2012, 12:05 AM
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Default 12 volt acc port

I am just about done with my aux fuse panel install, going to have a 12 v port installed on my dash, what I am planning to do is purchase a dual usb plug for the acc port, while riding will there be any issues I don't foresee yet if I plug my garmin and phone at the same time, will the phone charge ok while running the GPS.

Chet
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Old 11-18-2012, 04:36 AM
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No problems at all. I do the same on my bike, both charge fine.
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Old 11-18-2012, 09:20 AM
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Caution: different devices have different USB amperage requirements for running, charging, etc.

Example: if your USB adapter is putting out 1A and you try to run an iPad from it with screen on, Wifi/ 3G etc., the outlet probably can't keep up. I don't know if the iPad would detect this and shut down or if you'd blow a fuse in the adaptor or what. In any case, charging a sleeping device is easier than powering an operating device.

Check the input demand of your devices, and the output of your adaptor.

I just bought one myself (haven't used it yet) that has two ports: one is 1A, the other is 2.1A. Being different outputs, it probably makes sense to be mindful of what I plug into what.
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Old 11-18-2012, 10:37 AM
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USB device draw is very low. Even a 5A fuse is small for typical wire size and the bike's electrical overhead is more like twice that. Where caution is advised in devices typically used in an accessory port is with something like a tire pump. They can require ~15A to run.
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Old 11-18-2012, 03:35 PM
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You've misunderstood me, GW - or I'm misunderstanding you.

The "danger" isn't in overloading the 12V cigar lighter outlet - it's in either overloading or "underloading" a 1A USB port by using it to power a 2A device.

As I said, I don't know if a 2A device would just not charge/ not operate/ operate at a battery deficit while plugged... or if there's a 1A fuse in the converter which would blow.

If one had (as I do) a dual USB converter with one outlet rated at 1A and the other at 2A, it would make sense to plug one's 1A-draw cell phone into the the 1A, one's 2A GPS into the 2.1A outlet, and not vice-versa.
Also, if one thought one was charging one's 2A device all day in the tank bag, and then found out at camp that night that they had no charge at all... (DAMHIKT).
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Old 11-18-2012, 07:02 PM
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Quote:
Originally Posted by phoenixsteve View Post
If one had (as I do) a dual USB converter with one outlet rated at 1A and the other at 2A, it would make sense to plug one's 1A-draw cell phone into the the 1A, one's 2A GPS into the 2.1A outlet, and not vice-versa.
Also, if one thought one was charging one's 2A device all day in the tank bag, and then found out at camp that night that they had no charge at all... (DAMHIKT).
I have the same USB power port that plugs into a cigarette style outlet. I run the GPS in the 2.1A & the phone on the 1A to charge. Works fine, no issues.
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