... built-in lithium battery charge, applicable to the standby power of the travel, tourism, long ... 2,Solar charger, place under the sun, can the internal built-in battery charging, the green light is charging, can be filled with ... about 16 hours in the sun.How to use:Built-in battery is fully charged, can give mobile phones, digital cameras, MP3, MP4 and ... V3), and instructions were neutral box 1.Note: ...