The solar mobile charger is the device of transferring the sun light power into electrical power, is working as the solar panel transfer the sun energy into electrical energy which is stored in the built in 2600mAh lithium battery, the stored power is then exported to mobile phone, digital camera, MP3, MP4, and other digital products. The AC charger is designed for continual overcast days when there is no sunlight, with the AC charge function customer can charge lithium battery with AC 100V-240V. The mobile charger is the ideal backup power supply for business trip, travelling, long distance journey, wildness working. Comes with 3 LEDs light. Emergency charger with portable slim design and built-in battery. This solar charger is environment friendly. Built-in battery: 2600mAh. Solar panel: 0.7W/0.4W. Input voltage: AC100V-240V. Output voltage: DC5.5V or 5.5V or DC6V. Max output current: DC500mA