... Mobile Phone, Digital Camera, PDA, MP3, MP4 Product SpecificationsPolysilicon solar panels up to 15% conversion rateSolar battery: 5.5v ... charge time: 5 hoursDischarge time: 1-2 hours phoneApplies to: cell phone, MP3, MP4, digital cameraColor: black, silver, red, ... , mobile phone;3 The United States imports more colorful crystal silicon solar cells, solar energy conversion rate of 15% or more, in the ...