Hello. I've had my TBolt since the end of March. I've tested the Google Maps Navigation, but only from my work to my house... which is only a few miles. It worked well. We will be traveling to a location about 75 miles from home. I want to use the navigation. My question is, how will my battery be? I have a car charger, but will the navigation use power faster than it can charge, or will it be okay? I live in 3G network... will actually be traveling to a 4G network, but I have my phone set at 3G only, since that's the network I mostly use.