... iPhone and extra battery simultaneously 4. Powerful, safe battery cell 5. Four-LED battery charge status and charge progress indicator Technique ... : Up to 398 hours 5. Talk time: Up to 6.5 hours on 3G, Up to 13.5 hours on 2G 6. ... Internet Use: Up to 6.5 hours on 3G,Up to 8 hours on Wi-Fi7. ... (LG,SAMSUNG, NOKIA,BLACKBERRY,MOTOROLA,and etc.) Backup Battery with base for iPhone,iPod&Cellphone