A disposable portable toilet that is efficiently fabricated from foldable stock, such as corrugated cardboard, with minimal waste and adapted with a fluid absorbing inner liner is disclosed. A first shift portion and a second shift portion are disposed on the same shaft axis. The circuit also may determine if the charge of any cell is atbelow a second predetermined level, which may result in disconnecting of the battery from the load. The receptacles, which may be formed in a surface of the substrate and expose contacts of the second set, may be configured to at least partially receive conductive structures that are secured to the contact pads of the second set.