This rescue charger delivers an instant power boost to your cell phone or mobile device using a Mini-USB connector (included). The Rescue Charger 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. Its compact design makes it easy to slip into your pocket, laptop bag, or backpack where it is readily accessible for use in situations where mobile power is necessary.