This product can well absorb and preserve solar power which is used to refresh mobile phone. its big capacity can supply enough power to your mobile phone. It is also can be charged by AC adaptor. The mobile phone can be used during the charging period. It is your good underservant in business trip, tour, camping and so on. The product applies scope: NOKIA,SAMSUNG,Sony Ericsson,LG,MOTOROLA, creatly parts of models.