... capacity. Repeatedly charge and discharge more than 300 times, professional to the mobile phone, MP3, MP4, PMP, PDA, NDS, GPSPHONE, ... 5.5V ( maximum ) 2, the charging current: 400mA3, the battery capacity: 800 ~ 2000mAh4, the output voltage: 5.5V 5, ... = 70%.Application fields:Applies to the charging voltage of about 5.5V range of electronic digital mobile equipment external battery for mobile phone