Tekkeon has introduced its new myPower combination case and battery for the iPhone 3G. Designed as an open faced leather case, the myPower offers open access to the headphone jack, Home, sleep/wake, and volume buttons, ring/silent switch, and screen. In addition to a snap closure and an included screen protector, the case features an integrated, rechargeable lithium polymer battery, with a capacity level indicator and mini-USB port for charging the battery that doubles as a charging/sync port for the iPhone. The Tekkeon myPower for iPhone is Works With iPhone certified, and is available for pre-order now for $70. It is expected to begin shipping on December 15.