Built-in high capacity rechargeable polymer lithium battery; Solar power battery pannel power up to 0.8W; Through smart MCU output multi group voltage can charging your cellphone digital camera PDA PSP GPS DV MP3 MP4 et; Durable and reliable high capacity long lifespan multifunction etc; Solar panel voltage: 5.5V; Input interface: DC; Output interface: USB; Battery capacity: 3600mAh; Working temperature: -10~65'C; Charging time: 20~36 hours (illumination intensity: 1000W/m2); Solar power charging current: 100~150mA (illumination intensity: 1000W/m2); External input DC voltage: 4.8V-7.5V +/- 0.5V; External DC input current: 900~1200mA (1A); External DC power charging time: 3.5~5.5 hours; Adjustable output voltage: DC4.8V/5.8V/8.4V/9.0V(±0.2V); Output current: 400~1500mA (1.5A); Low battery indication