... price 2. Deliver goods on time our portable power features:this mobile power products, built in 800 ~ 2000mA lithium polymer batteries, ... PDA, NDS, GPSPHONE, PSP, IPOD, iPhone and other digital products add power, carry convenient.1, working voltage: 5.5V ( maximum ) ... ( maximum ) 6, the charging time : 4 ~ 6hrs ( indoor power: 5V / 500mA )Standard interface:1, the input interface: MINIUSB interface ...