This Motorola P793 Universal USB Portable Battery Charger Pack drops from $59.99 to $17.95 to $15.62 using the code EARTH13 at Alll4Cellular. Shipping adds $2. This is the best deal we could find for this 1420 mAh battery charger by $12.41. It can add 5 hours of talk time to most devices. Plus, because it's an universal charger that uses a micro USB connector, it's compatible with all devices that charge via USB such as smartphones from BlackBerry, Samsung, LG, Nokia, certain Apple products and more. There's no sales tax (except IL).