Patent ID: 8143850

Claim:
A system for providing power to at least one portable electronic device, comprising: a first battery unit comprising: a first battery unit upper side configured for attachment to a first portable electronic device; a first battery unit lower side; a rechargeable battery, a first battery coupling inductor positioned on or adjacent the first battery unit lower side; and a first battery charge indicator positioned on the first battery unit lower side; and a base unit comprising: a first recess configured to receive the first battery unit lower side while the first battery unit is secured to the first portable electronic device; a first coupling inductor positioned in or adjacent the first recess, wherein when the first battery unit is placed in the first recess the first battery coupling inductor is inductively coupled with the first coupling inductor; a base unit first battery charge display, a first light path configured to define an optical path between the base unit first battery charge display and the first battery unit charge indicator when the first battery unit is placed in the first recess.