... other digital products add power, carry convenient.1, working voltage: 5.5V ( maximum ) 2, the charging current: 400mA3, the battery ... capacity: 800 ~ 2000mAh4, the output voltage: 5.5V 5, the output current: 500mA ( maximum ) 6, the charging time ... %.Application fields:Applies to the charging voltage of about 5.5V range of electronic digital mobile equipment external battery for ...