In the event of cell phone or mobile device failure due to low battery power,This emergency phone batteryprovides an instant boost of power making it the ultimate mobile power companion. Harnesses the power of an AA battery and allows you to charge your devices on the fly. Simply place an AA battery in the Rescue Charger’s sleek case and plug the Rescue Charger into your device for a quick power boost. Because the Rescue Charger uses a Mini-USB connection, it is compatible with most popular PDAs, cell phones, …