... Four level power indicatorWorks with Apple's iPhone 4 Battery type: lithium polymer Capacity: 2,000mAh Weight: 85g Standard ... anti-overcharger, anti-overcurrent, anti-overload3)Compose Type : Injection Technology to make battery more stable4)Certifications : CE,,FCC, RoHS,ISO90015 ... 1) High energy density2) High working voltage for single battery cells3) Pollution-free4) Long cycle life5) No memory ...