Recharges in 7-9 hours using USB/micro-USB charge cable (included) Recharges via Apple or compatible USB/AC 5V wall charger (available here) Recharges via USB port on your computer Compatible with RichardSolo USB dual port car charger (available here) Recharges in tandem (together) with one or two devices Safety circuitry prevents overcharging Directions: 1.Connect your own USB cable from your device to the Smart Power Bank 2.Press the chrome power button once and release 3.Blue LEDs will illuminate showing a connection and remaining charge capacity 4.Monitor the charge icon on your device 5.When device is fully charged, remove the USB cable 6.You"re done! 7.When cable is removed or charging complete, Smart Power Bank shuts off after 30 seconds 8.Smart Power Bank includes safety circuitry to prevent overcharging