A battery-assisted radio frequency identification tag having a battery-assisted circuit and a filter is provided. Methods of producing these polymers, intermediates useful for preparing these polymers, and methods of using these polymers to deliver biologically active compounds to a host are also provided. Packing and pushing of objects may be performed using this approach. The supercharger system further includes a plate situated between the first and the second lower intake manifold adapter, where the plate is adapted to receive a supercharger on a bottom surface of the plate.