DC supplying arrangement for soap feeding device

A soap feeding device mounted in a main housing, the device comprising an upper housing having a soap reservoir and a lower housing having an arrangement comprising:

• a front control device;
• a rear battery compartment having a cover and a receiving space which receives a battery case with several pairs of cells having a plurality of contacts in a rear outer side thereof, an opening in a side of the battery compartment for allowing the battery case to be inserted therein, a frame abutted on a side of the battery case having a peripheral tab snapped to the cover of the battery compartment, a pair of L-shaped tabs in a rear of the frame clung to the battery case, a peripheral groove formed around the frame, a waterproof rubber ring positioned around the peripheral groove, a pair of dividers on either side of the frame, the peripheral tab positioned on an outer periphery of the frame and having a slot, a sliding block positioned between the pair of dividers and having a latch extended from the slot of the peripheral tab to snap in corresponding recess of the receiving space, and a knob positioned on a center of the cover of the battery compartment, the knob having an oval flange in a rear thereof;
• and
• wherein turning of the knob causes the sliding block to move thereby locking or unlocking the battery compartment.