... charge and discharge more than 300 times, professional to the mobile phone, MP3, MP4, PMP, PDA, NDS, GPSPHONE, PSP ... , material: aluminum. 4, the charging LED lamp color display: charging red, full of light. 5, power of ... LED lamp color display: red≤30%, green = 70%.Application fields:Applies to ... 5.5V range of electronic digital mobile equipment external battery for mobile phone