There will be times when your smartphone is low on battery and you won't be near an outlet, but that doesn't mean you're in for a dead device. A portable accessory like the PowerBAR 3,500mAH Solar Battery Charger will allow you to charge your phone from anywhere, and even better, PowerBAR can use sunlight to charge its high-capacity 3,500mAh polymer lithium ion battery (you can also charge it via USB, AC adapter or car charger). Once the cell is juiced up, you can connect it to the HTC Touch Pro2 via USB cable to transfer power. The accessory costs $59.95.