SOLAR PANEL(MONO OR MULTI-CRYSTALLINE): 5.5V/140MA LI-ION RECHARGEABLE BATTERY: 3.7V/1300MAH OUTPUT VOLTAGE: 6V OUTPUT CURRENT: 300MA CHARGING TIME FOR THE MOBILE PHONE:2.5~3HOURS CHARGING TIME FOR THE LITHIUM BATTERY INSIDE USING THE SOAR PANEL: 8~10HOURS CHARGING TIME FOR THE LITHIUM BATTERY INSIDE USING THE ADAPTER: 3~4HOURS