Anytone Apc-s300an 1800mah Portable Solar Charger with Mini&micro USB Charging Port for Smartphones /Iphone4s/4/ E-readers/moto/htc/blackberry/more USB Powered Devices External 1800mAh battery pack recharges up to 1,000 times from Solar or USB power. Provides a full charge to most phones, MP3 players, GPS, iPod, iPhone, e-Readers, Bluetooth devices and other USB powered devices Convenient size makes solar charging at home, in the car, or at work a breeze LED Power capacity indicator lets you know how much battery power you have left. No instructions;Best and Quick way to charge the solar charger via USB Cable.