I've noticed when I'm charging and using Google Nav in my car, sometimes I'll randomly get the green LED notification blinking in between the amber LED charging light, even when there's no new messages of any sort. Seems to go away once you unplug and plug it back in, but it's annoying since it gives a false positive for new notifications.
I'm using the Rocketfish charger in case that makes any difference.
I'm using the Rocketfish charger in case that makes any difference.