Abstract: The present invention is a module frame for use in a modular electronic assembly which includes a light emitting read out source and which also includes a substrate on which an integrated circuit chip is mounted and which is electrically coupled to a pair of batteries. The module frame is non-conductive and has a substrate cavity, a conducting member cavity which is disposed adjacent to the substrate cavity, and a first battery cavity and a second battery cavity both of which are disposed adjacent to the conducting member cavity. A first battery connector is disposed in the first battery cavity and is used for coupling the negative terminal of the battery in the first battery cavity to the casing of the battery in the second battery cavity. A second battery connector is disposed in the second battery cavity and is used for coupling the negative terminal of the battery in the second battery cavity to the substrate.

Abstract: The invention is a battery holder which is used to hold a pair of batteries in a modular electronic assembly having a substrate, on which an integrated circuit is mounted, and a module cap, which is concentrically, slightly larger than the substrate. The battery holder includes a module frame having a front surface, which is concentrically, slightly larger than the module cap, a back surface and a sidewall. The module frame also has a portion of its sidewall extending above the periphery adjacent to its front surface and two holes, perpendicular to its front surface and adapted to hold the pair of batteries. The battery holder also includes a metal plate, which is secured to the back surface of the module frame, for holding the pair of batteries in place.