In a method and system for protecting a battery being charged by an electrical device, a current flowing through a cell stack of the battery is measured. An example method includes determining a menu structure, with reference to a data set, for use with user interface software. The deck module includes an upper deck section and a lower frame section, the upper deck sections have channels for receiving and interlocking with the lower frame sections. Due to the continued shape of the flexible tank there will be very little product loss allowing virtually all product to be expelled. The controller is coupled to each of the touch pads for detecting a user input on the user interface and generating a plurality of sensing signals according to the user input.