The invention relates to the development of an electrochemical device including a lithium saltpolyether electrolyte film between two films forming the cathode and the anode, respectively. Arrayed membrane structures, and corresponding methods, are provided in certain embodiments which enable bulge testing of a film over a relatively large surface area via a plurality of different free-standing membrane portions. A first end of the inlet insert is inserted into a first pipe and the second end of the inlet insert is inserted into a second pipe. A number of trigger candidate are identified for the start point of each pulse cycle.