NOVELTY - The device has an array of photovoltaic cells embedded in or affixed to an exterior surface of housing, where the array of photovoltaic cells comprises a first string of photovoltaic cells with a first set of photovoltaic cells electrically connected in series. A second string of photovoltaic cells comprises a second set of photovoltaic cells electrically connected in series, where the first string of photovoltaic cells and the second string of photovoltaic cells are electrically connected in parallel and connected to a battery.    USE - Mobile electronic device e.g. mobile telephone, tablet computing device such as slate computing device, watch, earpiece such as Bluetooth earpiece and hearing aid, remote control, wireless mouse, wireless keyboard, glasses, laptop, camera, electric toothbrush, video game controller, automobile door remote, personal portable medical device, video camera, room monitoring device, thermostat and battery backup (all claimed). Can also be used for a dedicated e-reader computing device and a multimedia player.    ADVANTAGE - The device facilitates arrangement of some of the photovoltaic sub-modules in the array of photovoltaic cells in parallel effectively to reduce potential of any of the photovoltaic sub-modules from being damaged when the photovoltaic cells in the photovoltaic sub-modules are operated in reverse breakdown, so that current matching between modules does not occur when one of the photovoltaic sub-modules is shaded as some of the photovoltaic sub-modules are electrically arranged in parallel, thus reducing an amount of power that can be dissipated across any one of the photovoltaic sub-modules, and hence reducing risk of damage to a photovoltaic sub-module in the array of PV cells when a portion of sub-modules is shaded or light is non-uniform across cells in the array of photovoltaic cells.    DETAILED DESCRIPTION - The battery is a rechargeable battery that is selected from a group consisting of a lithium ion battery, nickel cadmium battery and a nickel metal hydride battery. INDEPENDENT CLAIMS are also included for the following:    (1) a charging pad    (2) a system for operating a mobile electronic device.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a charging pad.    Charging pad (400)    Body of charging pad (402)    Array of optical emitters (404)    Plug (406)    Optical emitters (408)