Having easy access to maps and navigation right there on my handle bar when I need it is great. What's best, is that I don't even have to remove my gloves. If there was one thing that could make the experience even better is not having worry about draining my phone's battery.
One way around my mobile phone power consumption worries is to install a power outlet on the bike. One of the most prominent power sockets company out there is powerlet. They carry a wide variety of power outlet to fit what seems to be just about anything. Their powerelet proprietary system is quite versatile, however, I opted for a full cigarette lighter socket for more flexibility.