I have a generic car USB charging adapter, and it charges my phone just fine, albeit if the GPS is on, the charger can't keep up with the power draw. This remains the case even if I have the screen off.
The question is whether this an issue that there's simply not enough power available over the USB charging port, or if it's something more complicated, like the phone might be asking for more power but the USB adapter isn't smart enough to provide it.
I think that's a different issue than the one I'm talking about. I'm talking about the Galaxy Nexus simply not realizing it's plugged in at all, so it won't charge. Apparently this has been happening with some car chargers. I've been fine with most of the ones I've used, but when I connected the Tunelink I got zilch.
What's the amperage on your charger, Dan? Could it just be a little weak? Still, I recall that with my Nexus One, I was able to drain the power while charging when using the GPS. It also got super hot. Perhaps dedicated GPS units still have their place?
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