Originally Posted by Emoto
I cannot comment on your mental state.
I think your biggest challenge will be supplying enough power to the unit that will allow it to charge while at the same time being used in GPS mode. I have not tried this myself because I don't have a smart phone or a tablet, but this seems to be a common problem.
Hope you let us know how it works out.
I tend to agree with your statement as I am trying to replace my dedicated Garmin car GPS with my new Galaxy S4. I have the Co Pilot App installed with a US map for $9.95. Very versatile and slightly buggy, need to restart every now and then, but has bunch of features. I am using a 12v to USB converter with 2 amp output and I am still noticing that over a course of about an hour, the battery still discharges even though it shows that it is charging. I'd say that although it is discharging very slowly, it is possible that having the display to the brightest setting with GPS mode running, could result in battery draining faster than recharging rate and leaving the phone dead after 1/2 a day.
I am still trying to tweak the power setting.......