... price 2. Deliver goods on time our portable power features:this mobile power products, built in 800 ~ 2000mA lithium polymer ... mobile phone, MP3, MP4, PMP, PDA, NDS, GPSPHONE, PSP, IPOD, iPhone and other digital products add power, carry convenient.1, working voltage ... 70%.Application fields:Applies to the charging voltage of about 5.5V range of electronic digital mobile equipment external battery for ...