1,Li-ion battery 2000mAh, can fully charge iPhone 2,Apple output dock ... Specification1, Solar Panel(mono or multi-crystalline): 5.5V/110mA2, Li-ion rechargeable Battery: 3.7V/2,000mAh3, Mini USB input: 5V ... , On/off button: press to start charging7, Power display: 4 LED indicators shows power level, each represents 25% of battery usage8, Protection ...