... 2. Deliver goods on time our portable power features:this mobile power products, built in 800 ~ 2000mA lithium polymer batteries, ... charge and discharge more than 300 times, professional to the mobile phone, MP3, MP4, PMP, PDA, NDS, GPSPHONE, PSP, IPOD, ... convenient.1, working voltage: 5.5V ( maximum ) 2, the charging current: 400mA3, the battery capacity: 800 ~ 2000mAh4, the output voltage: 5 ...