portable battery for iPhone 3G/3Gs/4G capacity: 1300mAh charge time: about 150 minutes NW: 58G rechargeable battery,mobile battery1300 mA enough portable battery for iPhone 3G/3Gs/4GLithium battery capacity: 1300mAhOutput parameters: DC5V/500mAProduct Charging time: 2.5 hourscharge time: about 150 minutes. Box + Blister +1 PCS Charging CableSize: 66 * 63 * 16mm.NW: 58GCertification: CE, ...